Search

The therapeutic efficacy of various concentrations and combinations of thymol, Artemisia absinthium oil and nanoparticle ozone against Nosemosis caused by Nosema ceranae in honey bees was studied. Two-hundred colonies were examined for N. ceranae positivity and negativity under light microscopy; 119 colonies were positive and 81 colonies were negative for Nosemosis. The study evaluated the therapeutic efficacy of 17 different combinations against N. ceranae. Nine of the 17 combinations were applied by spray to frames and eight were applied orally (combinations added to the sugar syrup reservoir) to the hives. Each of the 17 combinations was prepared in 1,000 ml from (2%, 3% and 5%) of thymol and (2% and 3%) A. absinthium oil, and 1,000, 2,000, 4,000, and 8,000 ppm concentrations of nanoparticle ozone. N. ceranae spore counts before and after the treatment were counted on Neubauer thoma slides by the digestion method, and the efficacy of the combinations was determined by the percent reduction test. In spray form, 200 ml 2,000 ppm nanoparticle ozone + 100 ml 3% thymol + 700 ml sugar syrup (efficacy-89.47%) (Group 5) and in oral form, 250 ml 2% thymol + 200 ml 2% A. absinthium oil + 500 ml sugar syrup (efficacy-85.95%) (Group 16), were found to be more effective. In conclusion, the combination of thymol and nanoparticle ozone in spray form was more effective than other combinations in this study. [ABSTRACT FROM AUTHOR]

Background: Light is a critical environmental factor in plants, encompassing two vital aspects: intensity and quality. To assess the influence of different light intensities on Origanum majorana L., pots containing the herb were subjected to four levels of light intensity: 20, 50, 70, and 100% natural light. After a 60-day treatment period, the plants were evaluated for metabolite production, including total sugar content, protein, dry weight, antioxidant indices, expression of monoterpenes biosynthesis genes, and essential oil compounds. The experimental design followed a randomized complete blocks format, and statistical analysis of variance was conducted. Results: The results indicated a correlation between increased light intensity and elevated total sugar and protein content, which contributed to improved plant dry weight. The highest levels of hydrogen peroxide and malondialdehyde (MDA) were observed under 100% light intensity. Catalase and superoxide dismutase enzymes exhibited increased activity, with a 4.23-fold and 2.14-fold increase, respectively, under full light. In contrast, peroxidase and polyphenol oxidase enzyme activities decreased by 3.29-fold and 3.24-fold, respectively. As light intensity increases, the expression level of the 1-deoxy-D-xylulose 5-phosphate reductoisomerase (DXR) gene increases. However, beyond a light intensity of 70%, the DXR gene expression level decreased. Furthermore, the expression levels of the cytochrome P450 genes CYP71D178 and CYP71D179 exhibited an increasing trend in response to elevated light intensity. Essential oil content increased from 0.02 to 0.5% until reaching 70% light intensity. However, with further increases in light intensity, the essential oil content decreased by 54 to 0.23%. Conclusions: These findings emphasize the importance of balancing plant growth promotion and stress management under different light conditions. The research suggests that sweet marjoram plants thrive best in unshaded open spaces, resulting in maximum biomass. However, essential oil production decreases under the same conditions. For farmers in areas with an average light intensity of approximately 1700 µmol m−2s−1, it is recommended to cultivate sweet marjoram in shade-free fields to optimize biomass and essential oil production. Towards the end of the growth cycle, it is advisable to use shades that allow 70% of light to pass through. The specific duration of shade implementation can be further explored in future research. [ABSTRACT FROM AUTHOR]

Essential oils extracted from natural plants can serve as safe food additives, compared with conventional chemical or synthetic additives. Essential oils have also been incorporated into food packaging materials to impart their bacteriostatic and antioxidant properties. Among them, thymol (THY), a monoterpene phenolic compound extracted from the thyme plant, has been used as a bacteriostatic agent in active packaging materials with functional properties, due to its significant bacteriostatic properties. However, the activity of highly volatile THY is easily affected by the packaging environment. Therefore, appropriate techniques are needed to incorporate the THY into polymer matrices, in order to improve its stability and utilization for controlled release. This study aims to prepare the potato starch films of active packaging, taking the mesoporous nano-silica (mobil composition of matter No. 41, MCM-41) as the controlled-release carrier of THY (THY-MCM-41), potato starch as the film-forming substrate, glycerol as the plasticizer, and calcium chloride as the cross-linking agent. Single-factor experiments were carried out to determine the suitable additive ranges of potato starch, glycerol, calcium chloride, and THY-MCM-41 mass concentration in the packaging film. The L9 (34) orthogonal test was also implemented to investigate the interactive effects of potato starch, glycerol, calcium chloride, and THY-MCM-41 on the thickness, opacity, moisture absorption (MA), water vapor permeability (WVP), tensile strength (TS), and elongation at break (EB) of the packaging film. The optimal conditions were obtained to prepare the potato starch films of active packaging. A systematic investigation was made to clarify the THY release kinetics in the optimal combination of packaging film at different temperatures and relative humidity (RH) environments. A prediction model of THY release was constructed to optimize the THY. The results showed that the optimal properties of the prepared packaging film A were achieved in the TS, MA, WVP, oxygen permeability (OP) and opacity were 7.16 MPa, 89.23%, 1.42 × 10-10 g/(m·s·Pa), 1.02 × 10-15 cm²/s·Pa, and 1.16 mm-1, respectively, when the mass concentrations of potato starch, glycerol, calcium chloride and THY-MCM-41 were 0.04, 0.015, 0.005, and 0.005 g/mL, respectively. Scanning electron microscope (SEM) and Fourier-transformed infrared (FTIR) spectroscopy confirmed that the denser and more uniform microstructure of packaging film was observed, where THY-MCM-41 was uniformly dispersed in the potato starch film, indicating better compatibility with potato starch. Thermogravimetric (TG) analysis showed that the encapsulation of MCM-41 improved the stability of THY in the potato starch film. In addition, the release kinetics of THY in the potato starch film of active packaging demonstrated that the initial explosive release was shifted to a subsequent sustained release under different temperature-RH environments. The active packaging film was prepared to effectively control the release rate of THY for the effective time of THY up to 10d. The release pattern of THY was in accordance with the First-order release model (R² > 0.980), and the release index “n” was less than 0.5, indicating that the release behavior of THY followed Fickian diffusion law. This finding can also provide the theoretical foundation for the precise release of active substances in the development of active packaging films. [ABSTRACT FROM AUTHOR]

The essential oils were isolated from Thymus serpyllum L. leaves, stem, flowers and whole plant using hydrodistillation technique and % yield was determined. The chemical constituents were studied using Gas Chromatography-Mass Spectrometry and Gas Chromatography-Flame Ionisation Detection. The analysis revealed the presence of 38 compounds in the essential oils obtained from different plant parts. Identification of compounds was achieved by detailed analysis of mass spectrum and retention indices. The major constituents of essential oil from the whole plant were thymol (35.25%), p-cymene (27.57%), thymol acetate (8.03%) and γ-terpinene (6.92%). In leaves they were thymol (45.59%), p-cymene (24.26%), thymol acetate (6.41%), and β-bisabolene (5.91%); whereas in flowers these were thymol (68.74%) and thymol acetate (7.40%) and in the stem, these were thymol (55.15%) and thymol acetate (8.01%). Specifically, it is the first report wherein essential oil constituents of T. serpyllum L. whole plant, leaves, flowers, and stems have been analyzed separately. Further, fundamental analysis of complex mass fragmentation patterns of terpenes and terpenoids using EI-MS has been achieved and the logical reason for the fragmentation pattern has been elaborated. Detailed elaboration of the mass fragmentation pattern may strengthen the EI-MS-based compound identification of terpenes and terpenoids from essential oils. [ABSTRACT FROM AUTHOR]

Ticks pose a significant threat due to their ability to lay thousands of eggs, which can persist in the environment for extended periods. While the impact of various compounds on adult and larval ticks has been studied, research on their efficacy against tick eggs is limited. This study evaluated the ovicidal activity of commercial acaricides, disinfectants, and natural products against Rhipicephalus annulatus eggs using the egg hatch assay (EHA). Deltamethrin and cypermethrin caused a non-significant inhibition of hatching (IH%), even at concentrations higher than the recommended levels. By contrast, the acaricides chlorpyrifos, phoxim, and amitraz significantly inhibited hatching at all tested concentrations. Ivermectin also demonstrated significant IH% at various concentrations but did not fully inhibit the hatching process. Among the disinfectants tested, Virkon-S®, TH4, and Chlorox showed insignificant effects, whereas formalin achieved an IH% of only 34.1% at a high concentration of 200 mg/mL. Natural products, carvacrol and thymol, exhibited significant ovicidal activity, with a significant IH%. In a semi-field application, phoxim (0.5 mg/mL) and deltamethrin (0.05 mg/mL) were sprayed on tick eggs on pasture soil from a farm. The results indicated that phoxim-treated eggs had a 40% IH%, while deltamethrin-treated eggs showed only an 8.79% IH%. In conclusion, the acaricides amitraz, phoxim, and chlorpyrifos, as well as the natural products carvacrol and thymol, caused significant toxicity to R. annulatus eggs. [ABSTRACT FROM AUTHOR]

BACKGROUND: Plant fungal diseases pose a significant threat to crop production. The extensive use of chemical pesticides has led to growing environmental safety risks and pesticide resistance of various plant pathogens. Therefore, it is an urgent task to explore novel eco‐friendly fungicidal agents with high efficacy to combat fungal infection. RESULTS: In this study, we rationally designed a series of novel thymol derivatives by incorporation of the sulfonamide moiety and evaluated their biological activities against plant pathogenic fungi. The bioassay results underscored the remarkable in vitro antifungal activity of compounds 5m and 5t against Phytophthora capsici (P. capsici), with EC50 values of 8.420 and 8.414 μg/mL, respectively. Their efficacies were superior to that of widely used commercial fungicides azoxystrobin (AZO, 20.649 μg/mL) and cabendazim (CAB, 251.625 μg/mL). Furthermore, compound 5v exhibited excellent in vitro antifungal activity against Sclerotinia sclerotiorum (S. sclerotiorum), with an EC50 value of 12.829 μg/mL, significantly outperforming AZO (63.629 μg/mL). In vivo bioassays demonstrated the impactful activity of compound 5v against S. sclerotiorum, achieving over 98% curative and protective efficacies at the concentration of 200 μg/mL. Further mechanistic investigations unveiled that compound 5v induced mycelial shrinkage and collapse in S. sclerotiorum, resulting in organelle damage and the accumulation of antioxidant enzyme activity. CONCLUSION: The significant antifungal efficacy of the prepared thymol derivatives shall encourage further exploration of compound 5v as a promising candidate to develop novel fungicides for crop protection. © 2024 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]

Thymol and carvacrol belong to the class of terpenoids that usually contribute to the flavor, color, and development of plants, and their complexation with CD has been recently reported. Due to their structural similarities, including such guests in CD poses a challenging task to theoretical methodologies. With the present contribution, we applied the recently developed GFN2-xTB multi-equilibrium approach to study the inclusion of those guests into β-CD. The inclusion of 1-adamantane carboxylic acid in β-CD was also investigated for comparison. The study was conducted with a progressive increase in the number of systems in steps, comprising 792, 1,188, and 1,584 systems. Therefore, for the three guest/host pairs studied, complete optimization in vacuum and water with the ALPB continuum method was applied to 10,692 systems at the GFN2-xTB level of theory. Furthermore, single-point calculations at the B97-3c/def2-TZVPP level of theory were carried out using the SMD solvation model. As a result, beyond determining the experimental trend, we addressed that the additional degree of freedom represented by the gamma Euler parameter decreased the errors related to the estimated adjusted binding constants. On the other hand, the use of the B97-3c/def2-TZVPP in conjunction with the set of systems selected by GFN2-xTB (ALPB) must be further investigated since the experimental trend was obtained only with a basis in the difference in electronic energies. [ABSTRACT FROM AUTHOR]

Silica (SiO2) particles are widely used in various industries due to their chemical inertness, thermal stability, and wear resistance. The present study describes the preparation and potential use of porous hydrophobic and hydrophilic SiO2 microcapsules (MCs) of a narrow size distribution. First, various layers of SiO2 micro/nano-particles (M/NPs) were grafted onto monodispersed polystyrene (PS) microspheres of a narrow size distribution. Hydrophobic and hydrophilic sintered SiO2 MCs were then prepared by removing the core PS from the PS/SiO2 core–shell microspheres by burning off under normal atmospheric conditions or organic solvent dissolution, respectively. We examined how the size and quantity of the SiO2 M/NPs influence the MC's properties. Additionally, we utilized two forms of hollow SiO2 MC for different applications; one form was incorporated into polymer films, and the other was free-floating. The hydrophobic microcapsules filled with 6% hydrogen peroxide were effective in killing the tomato brown rugose fruit virus (ToBRFV). The hydrophilic microcapsules filled with thymol and thin coated onto polypropylene films were successfully used to prevent mold formation for hay protection. [ABSTRACT FROM AUTHOR]

Consumer demand for high-quality meat has increased. This study aimed to investigate the potential application of cocrystals of thymol and carvacrol in broilers for high-quality meat production. Eight hundred 1-day-old chicks were assigned to four groups fed diets supplemented with 0, 40, 60, and 80 mg/kg of Crystal EO® (CEO), containing 25% cocrystals of thymol and carvacrol in a 42-d feeding trial. The results showed that dietary CEO supplementation decreased the muscle fiber diameter and increased the muscle fiber density, glycogen content, L*45 min value, and proportion of α-linolenic acid in the breast muscle; dietary 40 and 60 mg/kg of CEO decreased the lactate content, MDA concentration, cooking loss, shear force, and thrombogenicity index and increased the proportion of lauric acid in the breast muscle; dietary 60 and 80 mg/kg of CEO increased the glucose content, total superoxide dismutase, and total antioxidant capacity levels of breast muscle. Citrate synthase activity, free radical scavenging capacity, pH24 h and a*45 min values, and the cystine content in the breast muscle were especially higher in the 60 mg/kg CEO group compared to the control group. Collectively, dietary CEO supplementation improved meat quality and nutritional values and enhanced the antioxidant capacity of broiler meat, with 60 mg/kg of CEO having the greatest effect. [ABSTRACT FROM AUTHOR]

ABSTRACT In this study, novel chlorine‐thymol derivatives (1,3‐bis(4‐chloro‐2‐isopropyl‐5 methylphenoxy)propan‐2‐ol (Thy‐OHI) and 2‐[2‐(4‐chloro‐2‐isopropyl‐5‐methylphenoxy)ethoxy]ethanol (Thy‐OHII)) and axially di‐4‐chloro‐2‐isopropyl‐5‐methylphenoxy (Thy‐SiPc), 1,3‐bis(4‐chloro‐2‐isopropyl‐5‐methylphenoxy)propanoxy (Thy‐OHI‐SiPc), and 2‐[2‐(4‐chloro‐2‐isopropyl‐5‐methylphenoxy)ethoxy]ethanoxy (Thy‐OHII‐SiPc) substituted silicon phthalocyanine compounds were obtained, and their structures were elucidated by the combination of various methods such as NMR, IR, UV–Vis, and MS. The inhibitory effects of these compounds (Thy‐OHI, Thy‐OHII, Thy‐SiPc, Thy‐OHI‐SiPc and Thy‐OHII‐SiPc), synthesized for the first time, on cholinesterase enzymes (AChE and BChE) were investigated in the laboratory environment. In the studies, notably Thy‐OHI‐Si and thymol derivative ligand Thy‐OHII displayed significant inhibition against AChE and BChE. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate the acaricidal efficacy, tolerability of the target species, and residue levels of a thymolcontaining gelatin-based hydrogel developed as a controlled release system for varroosis control. The study was carried out on naturally infested honey bee colonies and results were compared with those of negative and positive control groups. The acaricidal efficacy of the negative control, positive control, and hydrogel treatment was 21.93 ± 2.87%, 81.09 ± 2.30%, and 70.32 ± 2.05%, respectively. For tolerability evaluations, the average number of dead bees per colony was determined to be 60.80 ± 8.01, 297.40 ± 21.4, and 86.80 ± 6.94 for the negative control, positive control, and hydrogel treatment, respectively. The average thymol residues in honey were measured as 0.030 ± 0.022 mg/kg, 5.498 ± 3.346 mg/kg, and 0.168 ± 0.110 mg/kg for the negative control, positive control, and hydrogel treatment, respectively. The average thymol concentrations in beeswax were 0.074 ± 0.047 mg/kg, 1.667 ± 0.855 mg/kg, and 0.476 ± 0.278 mg/kg for the negative control, positive control, and hydrogel treatment, respectively. The controlled release system developed in this study was found to prevent the transport of thymol out of the colony due to its structure, which is well tolerated by bees. Consequently, a single application can achieve longer infestation control. Furthermore, the lack of intervention by bees in the system ensures that bee mortality due to contact toxicity and residue levels in honey and beeswax are low. In addition to these advantages of the system, further development is required to increase the acaricide efficacy in order to make it an ideal alternative to existing varroacidal veterinary medicinal products. [ABSTRACT FROM AUTHOR]

This study aimed to investigate the effects of the monoterpenes thymol and p‐cymene on the liver of rats subjected to prolonged immobilization stress and to discover the possible mechanism behind this effect. For 14 consecutive days, the rats were placed in a restrainer for 2.5 h every day to expose them to stress. During the same period, thymol (10 mg/kg, gavage) and p‐cymene (50 mg/kg, intraperitoneally) were also administered. Thymol and p‐cymene prevented the increase in malondialdehyde levels and the decrease in glutathione content in the liver of rats exposed to chronic immobility. They also increased the activity of the glutathione peroxidase enzyme in the liver of stressed animals, but only thymol could increase the activity of superoxide dismutase. These monoterpenes reduced the expression of pro‐inflammatory cytokines tumor necrosis factor‐alpha (TNF‐α), interleukin (IL)‐1β, and IL‐6 and nuclear factor kappa B (NF‐κB) in the liver of stressed animals. They increased the expression of nuclear factor erythroid 2‐related factor 2 (Nrf2) and heme oxygenase‐1 (HO‐1). Thymol and p‐cymene greatly prevented the infiltration of inflammatory cells in the liver parenchyma of stressed rats. In conclusion, the study found that thymol and p‐cymene have a hepatoprotective effect on immobilized rats, likely exerted by suppressing oxidative stress and inflammation, stimulating Nrf2/HO‐1 signaling, and inhibiting the TNF‐α/NF‐κB pathway. [ABSTRACT FROM AUTHOR]

This study investigated the capability of a co-delivery system of thymol (THY) and sulfoxaflor that can serve to minimize the development of epididymal and testicular injury arise from SFX exposures alone. Forty-eight adult male rats were orally treated by gavage for 28 consecutive days. The rats were divided into six groups comprising control, THY alone (30 mg/kg), low SFX alone (79.4 mg/kg), high SFX alone (205 mg/kg) and co-exposure groups. After euthanasia, the rats epididymal and testicular damage and antioxidant status markers, myeloperoxidase (MPO) activity, levels of nitric oxide, total antioxidant capacity (TAC), total oxidative stress (TOS) and lipid peroxidation (LPO) were analyzed. Levels of tumor necrosis factor alpha (TNF-α), interleukin-1 b (IL-1β) and caspase-3 activity were assessed using ELISA kits. The results revealed that SFX exposure caused a significant (p < 0.05) decrease in the body weight, sperm functional parameters, serum testosterone level with widespread histological abnormalities in a dose-dependent manner. Increased relative organ weights, serum levels of luteinizing hormone (LH) and follicle stimulating hormone (FSH) were observed in low SFX-treated rats. Similarly, the epididymal and testicular myeloperoxidase activity, malondialdehyde (MDA), reactive oxygen species (RONS), tumor necrosis-α, interleukin-1β levels and caspase-3 activity were significant (p < 0.05) increased and a significant (p < 0.05) reduction in antioxidant enzyme activities and reduced glutathione (GSH) were revealed in SFX-treated rats. However, co-treatment of THY with SFX prevented SFX-induced epididymal and testicular toxicities. Thus, thymol protected against potential epididymis and testes alterations elicited by oxido-inflammatory mediators and up regulated antioxidant status. [ABSTRACT FROM AUTHOR]

• nSi-DA6, showed a notable increase in shoot and root dry weight, the number of leaves and the chlorophyll content. • nSi-DA6 and nSi-Atonik increased the phenols and flavonoids content and antioxidant activity in the leaves. • Sodium silicate and nSi-DA6 treatments increased the essential oil content in Z. multiflora. • The highest content of carvacrol and thymol was observed with Atonik and Si nanoparticles. Nanoparticles can drastically improve the growth, yield and quality of medicinal plants. In this study, silicon (Si) nanocomplexes were green synthesized from the growth regulators DA-6 and Atonik, and their effects on the growth, bioactive compounds, essential oil yield and composition in Zataria multiflora medicinal plant were compared with sodium silicate, a regular Si nanoparticle, DA-6 and Atonik. The Si-containing treatments such as sodium silicate and nanoparticles significantly increased shoot and root dry weight and the number of leaves, but not the inflorescence dry weight; however, the growth improvement effects of the Si-nanocomplexes were more evident. The nSi-DA6 and nSi-Atonik treatments did not affect the carotenoids and protein contents but increased the chlorophyll content in the leaves. The Si-nanocomplexes by increasing total phenols and total flavonoids enhanced antioxidant activity in the plant. Accumulation of epicatechin, naringenin and rosmarinic in response to the application of the Si-nanocomplexes promotes cardiovascular health effects and antioxidant activity of the plant. The essential oil (EO) content of the plants (2.75 %) increased to about 3.2 % after the application of Si-nanocomplexes. The main compounds of EO were carvacrol, thymol and linalool. The Si-nanocomplexes increased carvacrol and thymol content in the EO, however, linalool content remained unchanged after the treatments. Therefore, the application of silicon nanocomplexes increased the antioxidant and antimicrobial activity of EO without reducing the important factor in the fragrance of the EO. In conclusion, the application of 6 mM of nSi-DA6 and nSi-atonik nanoparticles was suggested to improve the growth and quality of Z. multiflora. [ABSTRACT FROM AUTHOR]

This study evaluated the capability of a thymol nanoemulsion (nTHY) to reduce cross-contamination with Salmonella Enteritidis in ground chicken meat. First, an nTHY (~ 54 nm) was prepared in a high-shear speed system (rotor–stator) and proved stable, remaining below 100 nm for 30 days in storage at 4 °C. Then, a minimum inhibitory concentration assay was performed by combining S. Enteritidis with viable native bacteria from chicken meat. nTHY presented half the MIC that was observed for its non-nanoemulsified versions for Salmonella Enteritidis (MIC = 0.31 mg/mL) and combined with native chicken bacteria (MIC = 0.625 mg/mL). A chitosan (CH) coating containing nTHY (6 mg/mL), equivalent to 10 × MIC (S. Enteritidis + native chicken bacteria), was prepared for in situ evaluation. Two groups of distinct chicken fillets were prepared for cross-contamination during grinding: chicken fillets experimentally contaminated with S. Enteritidis (~ 6.5 log CFU/g) and chicken fillets without S. Enteritidis but with the applied treatments (control, coated with CH, nTHY, and CH + nTHY). nTHY showed a bacteriostatic effect throughout the 7 days of storage. The CH + nTHY coating was the best treatment applied, reducing cross-contamination by up to 1.91 log CFU/g compared to uncoated samples. Thymol nanoemulsions can be natural alternatives to guarantee the microbiological safety of meat and meat products. [ABSTRACT FROM AUTHOR]

The ectoparasitic mite Varroa destructor has become a major worldwide pest of the honey bees (Apis mellifera L). Intensive use of chemical acaricides has led to the development of acaricide resistance in mites, thereby reducing the efficacy of acaricides and causing contamination of hive products. Thus, natural products such as essential oils can become an important alternative to synthetic chemicals in controlling Varroa mites. In this study, essential oil from Thymus schimperi grown in the Ethiopian highland was investigated for its chemical composition and toxicity against Varroa mites through complete exposure tests. Hydrodistillation of T. schimperi leaves yielded a pale yellow essential oil (0.8% v/w) with a strong and pleasant odor. Analyzed by GC-MS, 29 compounds, comprising 96.67% of the oil, were identified. Carvacrol (34.84%), thymol (23.03%), and p-cymene (14.20%) were found to be the main constituents. In the toxicity assay, T. schimperi essential oil showed high acaricidal activity against Varroa mites, with a 4 h-LC50 value of 109.16 µg/ml (5.46 mg oil/l air volume). Among the main constituents, thymol and carvacrol induced high toxicity to Varroa mites, with 4 h-LC50 values of 70.71 µg/ml (3.54 mg thymol/l air volume) and 106.10 µg/ml (5.31 mg carvacrol/l air volume), respectively. However, p-cymene was less effective in toxicity testing (4 h-LC50 > 5000 µg/ml). The results show for the first time that the essential oil of Thymus schimperi and its two main constituents, thymol and carvacrol, are highly acaricidal and can be used to control Varroa mite infestations. [ABSTRACT FROM AUTHOR]

Simple Summary: This study investigates how carvacrol and thymol affect the quality of semen from Beni Arouss bucks stored in skim milk at 4 °C. Semen from eight bucks was collected weekly for 11 weeks, pooled, and divided into three groups: one diluted in skim milk, and the others diluted in skim milk supplemented with 200 µM of carvacrol and thymol. Sperm motility, viability, abnormalities, membrane integrity, lipid damage, and bacterial growth were assessed during 48 h of storage at 4 °C. After 48 h, carvacrol improved sperm motility, viability, and reduced bacterial growth and lipid damage. Thymol showed similar benefits but did not enhance progressive motility. These beneficial effects are due to the antimicrobial properties of these two compounds, offering potential benefits for livestock breeding. This study aims to investigate the impact of carvacrol and thymol on the quality of Beni Arouss buck semen stored in skim milk at 4 °C. Ejaculates were collected from eight Beni Arouss bucks weekly for 11 weeks, pooled, and then divided into three equal parts. Samples were diluted to 400 × 106 sperm/mL in skim milk (control) and skim milk supplemented with a single dose of 200 µM carvacrol and thymol each. Evaluations of sperm motility, viability, abnormalities, membrane integrity, lipid peroxidation, and bacterial growth were conducted at 0, 6, 24, and 48 h of liquid storage at 4 °C. After 48 h of storage, the results indicate that the addition of carvacrol positively influences total and progressive motility and viability. However, it also leads to a decrease in lipid peroxidation and bacterial growth compared to the control group (p < 0.05). Thymol showed similar results to carvacrol, except for progressive motility (p > 0.05). Bacterial growth was negatively correlated with total and progressive motility and viability (p < 0.05), while no correlation between lipid peroxidation and these parameters was observed (p > 0.05). In conclusion, the addition of carvacrol and thymol to skim milk extender moderately improves the quality of Beni Arouss buck semen after 48 h storage at 4 °C due to its antimicrobial activity. [ABSTRACT FROM AUTHOR]

The emergence of non-albicans Candida as a potential causative agent of candidiasis following Candida albicans is occurring globally. It is known that phenolic cresols, thymol, and carvacrol have anti-Candida characteristics. However, there are few papers that disclose the mechanism of action, which is characterized by a damaged cell wall and ergosterol synthesis, as well as calcium-induced death in C. albicans. This work utilized in-silico docking analysis to examine the molecular targets of thymol and carvacrol in Candida glabrata. The results were then validated in vitro by antifungal susceptibility testing and growth curve analysis. The study incorporated C. glabrata deletion mutants for the target proteins to gain understanding of the function of these proteins in the antifungal effects of the two monoterpenoids. After conducting molecular docking and in silico toxicity evaluations, thymol and carvacrol were chosen for in vitro investigations. Experimental tests conducted in a laboratory setting have shown that both phytocompounds exhibit strong binding affinity towards cell wall synthesis proteins (Kre1p, Kre2p, Ecm33p), calcium channel proteins (Mid1p, Ecm7p), and proteins involved in the ergosterol synthesis pathway (Erg5p). These proteins are likely to be the specific targets for the anti-Candida properties of the two isomeric monoterpenoids in C. glabrata. Minimum inhibitory concentration (MIC50) values for thymol and carvacrol range from 50 µg/ml to 75 µg/ml. The wild-type strains exhibit a minimum fungicidal concentration of 100 µg/ml for thymol and 125 µg/ml for carvacrol. The results underscore the significance of these proteins in the fungal reaction to thymol and carvacrol and also indicate a promising opportunity for the development of novel antifungal treatment methods utilizing these proteins. [ABSTRACT FROM AUTHOR]

A novel, simple, rapid, and non-expensive analytical method based on square wave voltammogram at Pt-microelectrode coupled with partial least square multivariate calibration was used for the simultaneous quantitation of thymol (THY) and carvacrol (CAR) in thyme and oregano essential oils. Results demonstrated that the multivariate calibration method successfully exploited the first-order advantage, rendering highly satisfactory quantitative figures (average recoveries not statistically different than 100%). Moreover, the results agree well with those obtained from the official analytical method. Last, the method's environmental sustainability was asserted using the AGREE metric, highlighting its eco-friendly nature. More importantly, the proposed analytical procedure does not require previous sample preparation or electrode surface modification. The results underscore the suitability of the method for determining THY and CAR in essential oils at low concentrations (LOD ~ 7.6 µM) with REP% below 5.6%, meeting the requirements of the green analytical chemistry. [ABSTRACT FROM AUTHOR]

Bacterial biofilm on implants may cause inflammation, which disturbs the process of the implant's integration with the surrounding tissues. Such problems are becoming critical for patients' health, especially in connection with the presence of antibiotic-resistant bacterial strains. Among the existing alternatives for drug treatments are natural-based substances. This study focused on the examination of silica coatings with curcumin and thymol, which were deposited using the sol-gel method on 3D printouts made of Ti6Al4V ELI. This substrate material is commonly used in medicine. The selective laser melting technique used for the manufacturing of samples was in line with the existing procedures applied for individual orthopedic implants. The examination involved the assessment of the coatings' morphology, chemical composition, and biological effect. The antibacterial properties were tested using a flow cytometer using Escherichia coli, and the cytotoxicity on Saos-2 cells was assessed using the LIVE/DEAD test. The obtained results showed that it is possible to produce silica sol-gel coatings with the addition of specific natural substances in concentrations assuring a bacteriostatic effect. The produced coatings did not show any cytotoxic effect, which confirms the possibility of using both curcumin and thymol as additives to coatings used in medicine, e.g., for orthopedic implants. [ABSTRACT FROM AUTHOR]

This work studied the sustainable approach for the development of bio‐based polybenzoxazine composites derived from sustainable thymol and utilized for diverse applications viz., superhydrophobic, high dielectric, and resistant to bacterial corrosion. The molecular structure of benzoxazines was ascertained from spectral analyses and curing behavior was assessed using differential scanning calorimetry (DSC) analysis. The benzoxazines were polymerized through ring‐opening polymerization to assess their thermal stability using TGA. Among the synthesized polybenzoxazines, the poly(BT‐fa) developed using bis‐thymol (BT) and furfurylamine (fa) which possesses the furfural core contributes to higher thermal stability with the enhanced value of char yield of 43%. Thus, poly(BT‐fa) was chosen for the preparation of composites, and found that 15 wt% chicken feather carbon (CFC) and 15 wt% cashew nutshell cake carbon (CSC) used as reinforcements exhibit significantly enhanced decomposition temperature with char yield of 77% and 69% respectively. Dielectric performance of the composites with high k values of 7.66 and 8.66 was obtained for 15 wt% of the CFC and CSC bio‐carbon reinforcements respectively. These bio‐based benzoxazines also exhibited substantial antibacterial activity, indicating their potential utility toward resistance against microbial colonization. Among polybenzoxazines, poly(BT‐sa) exhibits the highest value of water contact angle (WCA) of 151°. To exploit the superhydrophobic properties of polybenzoxazines, the cotton fabrics were coated with poly(BT‐sa). It was found that poly(BT‐sa) coated cotton fabric possesses an excellent WCA value of 161°, which indicates its suitability for self‐cleaning and water‐repellent applications. Further, poly(BT‐oa) possesses enhanced anti‐corrosion‐resistant behavior than that of other polybenzoxazines and contributes to better protection of mild steel surfaces from corrosion. The values of tensile modulus /flexural modulus and tensile strength and flexural strength obtained for poly(BT‐fa) are 5.1/3.7 GPa and 66 ± 1/103 ± 1 MPa, respectively. Data obtained for bi‐functional bio‐based polybenzoxazine composites from different studies suggest that these materials can be used in antimicrobial, superhydrophobic, and corrosion‐resistant applications. [ABSTRACT FROM AUTHOR]

Common thyme (Thymus vulgaris L., Lamiaceae) is one of the most well-known plants in the world, widely used in medicine, culinary arts, and cosmetics. The aim of this study was to analyse the content and composition of essential oils (EO) obtained from the T. vulgaris commercial samples grown in Estonia and in various European countries. Gas chromatography was used to characterize the quality and diversity of chemotypes of the studied plant raw material of different origins. The samples of the T. vulgaris herb contained 3â28 mL/kg of EO, and in five samples it was below the European Pharmacopoeia (Ph. Eur.) requirement (minimum 12 mL/kg). In total, 44 EO compounds were identified in the essential oils of the studied T. vulgaris samples. Among them, five principal compounds were carvacrol (2.3â87.5%), thymol (0.9â71.2%), p-cymene (0.3â26.0%), γ-terpinene (0.1â16.1%), and (E)-β-caryophyllene (0.6â9.2%). It was concluded that the main compound of T. vulgaris EO (n = 37) was thymol with an average content of 41.1%. Monoterpenoids (90.5%) and sesquiterpenoids (5.7%) were the most dominating groups of terpenoids in the studied EO. Regarding the minimum and maximum content of key compounds in EO, none of the studied samples (n = 22) fully met the requirements of Ph. Eur. 11. The content of the four most important terpenoids (thymol, carvacrol, p-cymene, and γ-terpinene) in the EO of T. vulgaris does not change much from the beginning to the end of the flowering period. Correlations between the content of the most important (>2%) components (n = 14) of the studied EO (n = 37) showed a level >0.9 in several cases. Among seven studied chemotypes of T. vulgaris EO, five contained thymol as one of the main components.

IntroductionGarden thyme (Thymus vulgaris L.), is a small perennial plant native to the Mediterranean region that is now found worldwide. It is commonly used as a culinary herb and for medicinal purposes as well (Silva et al., 2021). Thymol is one of the main and active chemical compounds of thyme. It has been shown to have antibacterial, antifungal and antiviral properties and is often used as a natural preservative in food and cosmetic products (Hammoudi et al., 2022). Golubkina et al. (2020) reported that the use of mycorrhizal fungi as a technology that is compatible with the environment and by increasing plant access to nutrients and increasing resistance to stresses as well as improving water absorption, can lead to improved plant growth. Today, the use of organic compounds such as humic acid can affect many morphological, physiological and biochemical processes of plants and lead to improvement in plant growth (Mousavi et al., 2022).Materials and MethodsIn order to investigate the effects of foliar application of humic acid fertilization and mycorrhizal fungi symbiosis on Thymus vulgaris L., a factorial layout has been applied, based on a randomized complete block design with three replications at the field of the research farm of Islamic Azad University, Takestan Branch during 2020-2021 and 2021-2022 growing seasons. Experimental factors included three species of mycorrhiza fungi (control, Glomus mosseae, G.etunicatum and G.intradices) and humic acid fertilizer levels included (control, 150 and 300 mg.L-1). Important traits such as plant height, herbal fresh weight, essential oil percentage, and yield, flavonoid content, root colonization percentage, thymol and carvacrol percentage were measured and analyzed.Results and DiscussionThe results showed that the effects of the treatments were significant at the 1% level for all investigated traits. For the characteristics of essential oil percentage and essential oil yield, the interaction effect was also significant at 1%, with an observed increase of over 200%. The application of 300 mg/liter humic acid resulted in a 14% increase in root colonization and a 16% increase in flavonoid percentage. Similarly, the application of mycorrhiza increased these traits by 23% and 30%, respectively. Thymol and carvacrol were the most abundant essential oil compounds. It can be concluded that the quality of thyme essential oil improved under the treatments. Among the mycorrhizae used in this research, G. mosseae mycorrhizae were more effective than the other two types. The results suggest that the application of mycorrhiza has a more significant impact on improving the examined traits compared to humic acid.ConclusionBased on the results of this study, application of mycorrhiza due to creating a symbiotic relationship with the roots of the garden thyme plant and humic acid spraying could increase the quantity and quality of the produced product. mycorrhiza was better than the use of humic acid in most treatments.

Abstract Mosquito-borne diseases, such as malaria, dengue, and Zika, pose major public health challenges globally, affecting millions of people. The growing resistance of mosquito populations to synthetic insecticides underscores the critical need for effective and environmentally friendly larvicides. Although chemical pesticides can initially be effective, they often lead to negative environmental consequences and health hazards for non-target species, including humans. This study aimed to evaluate the larvicidal effects of Trachyspermum ammi essential oil and Delphinium speciosum extract on the larvae of three major mosquito species: Aedes aegypti, Anopheles stephensi, and Culex quinquefasciatus. Mosquito larvae of Ae. aegypti, An. stephensi, and Cx. quinquefasciatus were reared under controlled laboratory conditions. The larvicidal activity of T. ammi essential oil and D. speciosum extract was evaluated through standard bioassays, using various concentrations of essential oils (10, 20, 40, 80, and 160 ppm) and extracts (160, 320, 640, 1280, and 2560 ppm) to determine the lethal concentration (LC50) values after 24 h of exposure. Fresh plant materials were collected, with the essential oil extracted via hydro-distillation, and the extract prepared using methanol solvent extraction. The chemical composition of T. ammi essential oil was examined using gas chromatography-mass spectrometry (GC-MS). Additionally, the preliminary analysis of the chemical compounds in D. speciosum extract was carried out using thin layer chromatography (TLC) and nuclear magnetic resonance spectroscopy (NMR) techniques. The results indicated that the essential oil of T. ammi exhibited more effective larvicidal activity compared to the D. speciosum extract. Specifically, the essential oil demonstrated LC50 values of 18 ppm for Cx. quinquefasciatus and 19 ppm for Ae. aegypti. In contrast, the D. speciosum extract showed the strongest larvicidal effect against An. stephensi, with an LC50 of 517 ppm. Concentrations of 40 ppm of the essential oil and 1280 ppm of the extract resulted in 100% mortality across all three species. Both the essential oil of T. ammi and the D. speciosum extract exhibited concentration-dependent larvicidal activity, and these results were statistically significant (p

The thymol chemotype of the essential oil of Thymus vulgaris (EOTV-T) and its nanoemulsion (NEOTV-T) were investigated as anesthetics in the management of Colossoma macropomum. The stability of nanoemulsions was analyzed by zeta potential and dynamic light scattering for an interval of 37 days prior to carrying out two anesthesia experiments. The first experiment determined anesthesia induction and recovery intervals for juveniles anesthetized with different concentrations of EOTV-T and NEOTV-T. Based on the obtained induction and recovery curve, the second experiment adopted concentrations of 75 mg/L of EOTV-T and 50 mg/L of NEOTV-T for use during biometric management every 10 days for 60 days of cultivation of juvenile C. macropomum. The results showed that NEOTV-T had an average diameter of less than 100 nm for up to 22 days and was more effective at inducing anesthesia than EOTV-T. The continuous use of anesthetics during biometrics did not affect juvenile performance in terms of growth, feed consumption, and survival. Furthermore, no significant differences were observed in hematological and biochemical parameters between juveniles of the control treatment and those subjected to biometric management using 75 mg/L of EOTV-T and 50 mg/L of NEOTV-T. It can be concluded that the essential oil of T. vulgaris and its nanoemulsion can be used to facilitate the management of juvenile C. macropomum without compromising their performance or well-being. [ABSTRACT FROM AUTHOR]

[Objective] This study aimed to evaluate the antimicrobial efficacy of essential oil (EO) from diverse chemotypes of Lippia graveolens against oxytetracycline-resistant Aeromonas hydrophila, which primarily affects the tilapia aquaculture (O. niloticus) in Guatemala. [Methodology] L. graveolens were collected in three departments in Guatemala. The EO was obtained by hydrodistillation and characterized using gas chromatography and mass spectrometry (GC/MS). Subsequently, an antimicrobial assay was conducted using disk and dilution susceptibility tests and evaluation of synergistic interactions among the chemotypes. Each test was performed in triplicate. [Results] The analysis revealed the presence of twenty-seven compounds in the EO obtained from the chemotypes, with the main class being monoterpenes. The major constituents identified were cis-Dihydro-β-terpineol (8.84%) in chemotype I, carvacrol (51.82%) in chemotype II, and thymol (79.62%) in chemotype III. All EO chemotypes of L. graveolens demonstrated the ability to inhibit the A. hydrophila growth. Thymol chemotype exhibited the strongest inhibitory effect against bacterial growth, with a minimum inhibitory concentration (MIC) of 92.4 µg/mL and a minimum bactericidal concentration (MBC) of 184.8 µg/mL. Furthermore, the results suggest that there is no synergistic or additive effect when combining different chemotypes of L. graveolens. [Conclusions] This is the first report of L. graveolens chemotypes exhibiting antimicrobial activity against oxytetracycline-resistant A. hydrophila. The findings suggest that the chemotype thymol could be a potential treatment for infections in the tilapia aquaculture in Guatemala.

Developing a spectroscopic approach to assess the medicinal substance thymol was one of the research's objectives. Using an oxidative coupling reaction between thymol solution and N,N-dimethyl-p-phenylenediamine dihydrochloride solution (N,N-DMPPDADH) in alkaline media with potassium periodate as an oxidizing agent, the current technology forms a blue-colored soluble product. The wavelength at which a colored product exhibits maximum absorption is 600 nm. According to Beer's law, the concentration range covered by the approach under review is 1.25–20.00 μg/mL of thymol. The specific molar absorbance value of 10725.71 L/mol cm indicates the method's sensitivity. The Sandell significance value was 0.014 μg/cm2, which represents sensitivity per unit length. The precision of the method is demonstrated to be commendable, and the low relative standard deviation value of 0.16% supports this. This method's accuracy in identifying thymol at such low quantities is demonstrated by its confirmed detection limit of 0.0124 μg/mL. The developed technique has been useful in screening thymol in pharmaceutical products, with mouthwash being the focus of particular attention. Thymol content in real-world samples was accurately determined using the approach, as evidenced by the reported 101.13% recovery rate of thymol in the examined samples.

Objective: Trichomonas vaginalis is a sexually transmitted protozoan parasite that usually causes infections in women. Metronidazole is used as the first choice in the treatment of this parasitic disease, but there is a need for new drugs since 1980’s with increasing numbers of reported resistance. In this study, it was aimed to determine the antitrichomonal activity of the major components of Cinnamomum zeylanicum (cinnamon) and Thymusvulgaris (thyme) essential oils, cinnamaldehyde, carvacrol and thymol against metronidazole resistant and susceptible T. vaginalis strains, and to determine their interaction with metronidazole by checkerboard method. Methods: Cinnamaldehyde, carvacrol, thymol and metronidazole were obtained commercially. Two clinical isolates and one metronidazole resistant T. vaginalis reference strain were used in the study. MIC50 and MLC values of essential oil components and metronidazole were determined by broth microdilution method. The combinations of essential oil components with metronidazole were determined by the checkerboard method. Results: According to in vitro activity tests, cinnamaldehyde was determined to be most effective essential oil component. Clinical isolates were susceptible to metronidazole. In combination study, metronidazole showed synergy with cinnamaldehyde and carvacrol, and partial synergy with thymol. Conclusion: It was determined that cinnamaldehyde, carvacrol and thymol, which are known to have high antimicrobial activity, also have strong activity against T. vaginalis isolates and show a synergistic interaction with metronidazole. The use of metronidazole at lower doses in the synergistic interaction may contribute to the literature in terms of reducing drug side effects, creating a versatile antimicrobial target, and reducing the rate of resistance development.

An ultrasound-assisted dispersive liquid–liquid microextraction by solidifying floating organic droplets, coupled to a form of temperature-programmed gas chromatography flame ionization detection, has been developed for the extraction and determination of thymol and carvacrol. This method utilizes undecanol as the extraction solvent, offering advantages such as facilitating phase transfer through solidification and enhancing solvent-focusing efficiency. The optimal gas chromatography conditions include a sample injection volume of 0.2 µL, a split ratio of 1:10, and a flow rate of 0.7 mL min−1. The extraction conditions entail an extraction solvent volume of 20 µL, a disperser solvent (acetone) volume of 500 µL, pH 7.0, 7.0% NaCl (3.5 M), a sample volume of 5.0 mL, an ultrasound duration of 10 min, and a centrifuge time of 7.5 min (800 rpm). These conditions enable the achievement of a high and reasonable linear range of 3.5 to 70. 0 μg mL−1 for both thymol and carvacrol. The detection limits are found to be 0.95 and 0.89 μg mL−1, respectively, for thymol and carvacrol. The obtained relative standard deviations, 2.7% for thymol and 2.6% for carvacrol, demonstrate acceptable precision for the purpose of quantitative analysis. [ABSTRACT FROM AUTHOR]

[Objective] To study the thymol regulate rice salt tolerance in saline soil. [Method] Selecting rice filed with high salinity (salinity 0. 4‰) in Dongtai City, Jiangsu Province as the research object, self-developed natural bio-stimulator (5% thymol) at flowering period was sprayed, in order to evaluate the effect of thymol on the regulation of rice salt tolerance in filed. [Result] Spraying thymol was able to enhance the physiological status of flag leaves in saline soil, such as the increase in chlorophyll content, proline content and reducing sugar content. Spraying thymol increased the grain plumpness, kernel number per spike and thousand kernel weight in saline soil. Spraying thymol enhanced rice viscosity and prolamin content, and decreased rice amylose content in saline soil. [Conclusion] Spraying thymol effectively stimulated rice tolerance against salinity in field by maintaining productivity and rice quality in saline soil. This may provide scientific basis for the development of novel regulators conferring salt tolerance and its applying technology in field. [ABSTRACT FROM AUTHOR]

Among the most alarming postharvest fungal pathogens affecting the shelf life of citrus fruits are green (Penicillium digitatum) and blue (Penicillium italicum) molds. This in vitro study was aimed to evaluate the essential oils (EOs) of Cymbopogon flexuosus (CF) and Monarda citriodora (MC) and their principal components against these fungal pathogens. The composition of selected EOs was analyzed using Gas Chromatography- Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detector (GC-FID). Citral (83.81%) and thymol (62.51%) were identified as major components and were isolated by column chromatography from CF and MC EO respectively followed by characterization using spectral techniques such as Fourier Transform Infrared Spectroscopy (FTIR), Proton Nuclear Magnetic Resonance Spectroscopy (1H-NMR) and Carbon Nuclear Magnetic Resonance Spectroscopy (13C-NMR). Among EOs and their major components, thymol displayed promising potential against both Penicillium species with MIC values of 50 and 80 mg L-1 respectively. Molecular docking studies also confirmed the stable binding interaction of both components, particularly thymol with the active sites of target proteins i.e. 14-α-demethylase and chitin synthase of P. digitatum and P. italicum with the docking scores of -5.07, -5.41 kcal/mol and -5.78, -5.23 kcal/mol respectively. Optical microscopy studies revealed hyphal thinning and fragmentation at frequent sites with contraction of cytoplasmic content indicating incipient plasmolysis. The tested principal components, citral and thymol were predicted to exhibit similar mechanism of action to that of synthetic recommended molecules as revealed by molecular docking. Therefore, these findings provide empirical support to explore thymol as a promising eco-friendly antifungal agent for postharvest application in Kinnow. [ABSTRACT FROM AUTHOR]

Lemon bee balm (Monarda citriodora Cerv. ex-Lag) is a noble industrial medicinal and aromatic plant species, which is used as digestive, antifungal, anti-inflammatory and menstrual irregularity remedies in traditional medicine. It is a common source of thymol and other active constituents with recognized antimicrobial properties. A multilocation field trial was performed to evaluate essential oil (EO) yield stability, secondary metabolites and economic returns in eight diverse geographical environment conditions (GEC) in India. The secondary metabolites viz., essential oil content and oil yield were found to be highest in tropical and sub-tropical regions. The essential oil content was found to be higher in inflorescence part at all the experimental sites and found to be highest (0.85±0.21%) at BR-JALAUN. The highest EO yield (130.25±3.25 kg ha−1), net return (Rs. 1,22,125.00±245.21 ha−1) and benefit cost (B:C) ratio (2.67±0.17) was recorded at FFDC-KANNAUJ. The thymol content percentage was found to be highest on physiological maturity (>95% flowering) [PM] and on 75% flowering [FS-II] and it began to decline on seed formation stage at all the experimental sites. The significantly highest thymol content percentage was found on PM (86.65±3.91%) and on FS-II (84.21±3.78%) at TBR-JHANSI. On the basis of the gas chromatography and mass spectrophotometry analysis, twenty constituents were isolated. The inflorescence EO contains more thymol than the EO from leaves with stem which in turn was characterized by a higher content of p-cymene, γ-terpinene, carvacrol, α-phellandrene, α-pinene, myrcene, α-terpinene, citral and β-caryophyllene. [ABSTRACT FROM AUTHOR]

The objective of this study was to evaluate the antioxidant, anti-inflammatory, and anticancer properties of thymol, carvacrol, and their equimolar mixture. Antioxidant activities were assessed using the DPPH, ABTS, and ORAC methods. The thymol/carvacrol mixture exhibited significant synergism, surpassing the individual compounds and ascorbic acid in DPPH (IC50 = 43.82 ± 2.41 µg/mL) and ABTS (IC50 = 23.29 ± 0.71 µg/mL) assays. Anti-inflammatory activity was evaluated by inhibiting the 5-LOX, COX-1, and COX-2 enzymes. The equimolar mixture showed the strongest inhibition of 5-LOX (IC50 = 8.46 ± 0.92 µg/mL) and substantial inhibition of COX-1 (IC50 = 15.23 ± 2.34 µg/mL) and COX-2 (IC50 = 14.53 ± 2.42 µg/mL), indicating a synergistic effect. Anticancer activity was tested on MCF-7, MDA-MB-231, and MDA-MB-436 breast cancer cell lines using the MTT assay. The thymol/carvacrol mixture demonstrated superior cytotoxicity (IC50 = 0.92–1.70 µg/mL) and increased selectivity compared to cisplatin, with high selectivity indices (144.88–267.71). These results underscore the promising therapeutic potential of the thymol/carvacrol combination, particularly for its synergistic antioxidant, anti-inflammatory, and anticancer properties against breast cancer. This study paves the way for developing natural therapies against breast cancer and other conditions associated with oxidative stress and inflammation, leveraging the synergistic effects of natural compounds like thymol and carvacrol. [ABSTRACT FROM AUTHOR]

Background: 5-fluorouracil (5-FU) is a widely used, highly effective chemotherapeutic agent. However, its therapeutic efficacy is often limited by associated adverse effects, with hepatotoxicity being frequently reported with 5-FU therapy. Thymol is a monoterpene found in thyme (Thymus vulgaris L., Lamiaceae) and is known for its antioxidant, anti-apoptotic, and anticancer activities. This study aimed to explore the hepatoprotective activity of thymol against 5-FU-induced liver injury. Methods: Rats received two intraperitoneal doses of 5-FU (150 mg/kg) either alone or in combination with thymol at doses of 60 mg/kg or 120 mg/kg. Liver enzymes, oxidative stress, and apoptotic markers, in addition to histopathological changes, were assessed. Results: 5-FU induced marked liver injuries as evidenced by elevated liver enzymes and histopathological changes, in addition to abnormalities of oxidative and apoptotic markers. The administration of thymol ameliorated the 5-FU-induced oxidative damage through increasing hepatic antioxidants and lowering lipid peroxidation. Apoptotic response markers such as Bax, Bcl-2, Bax/Bcl-2 ratio, and PARP were also improved. Furthermore, Western blotting analysis showed that thymol modulated the 5-FU-induced changes in the expression of Akt/GSK-3β and p44/42 MAPK (ERK1/2) signaling pathways. Conclusions: Our research is the first to shed light on thymol's potential protective effect against 5-FU- induced hepatotoxicity by inhibiting oxidative and apoptotic pathways and modulating the Akt/ GSK-3β as well as p44/42 MAPK (ERK1/2) signaling pathways. [ABSTRACT FROM AUTHOR]

Carvacrol and thymol are broad-spectrum natural antimicrobial agents. To reduce their volatility and improve their antimicrobial performance, synergistic systems were prepared loading the active molecules in zinc-modified clays. Montmorillonite (MMT) and zeolite (ZEO) were modified with zinc ions (ZnMMT and ZnZEO), with well-known antimicrobial properties, and then with carvacrol or thymol, reaching the 26 ± 3% and 33 ± 2% w/w of loading, respectively. The resulting hybrid materials were characterized by FT-IR, XPS, XRD, TGA, and GC-MS to evaluate carvacrol/thymol release in simulating food matrices. Antimicrobial assays carried out using spoiler and pathogenic bacterial strains showed that the antimicrobial activity of both thymol and carvacrol was largely preserved once they were loaded into Zn-modified clays. However, MMT hybrids showed an antibacterial activity significantly higher than ZEO hybrids at 50 mg/mL of thymol and carvacrol. For this reason, deeper antimicrobial evaluations were carried out only for ZnMMT composites. ZnMMT loaded with thymol or carvacrol produced inhibition zones against most of the target strains, also at 3.12 mg/mL, while the positive controls represented by the single molecule thymol or carvacrol were not active. The hybrid materials can be useful for applications in which the antimicrobial activity of natural molecules need to be displayed over time as requested for the control of microbial pathogens and spoilage bacteria in different applications, such as active packaging, biomaterials, and medical devices. [ABSTRACT FROM AUTHOR]

BACKGROUND: In recent decades cyanobacterial species have attracted research attention as potential sources of new biostimulants. In this study, the biostimulant effects of five cyanobacterial suspensions on the growth and essential oil composition of Thymus vulgaris L. were evaluated. The expression of key genes involved in the biosynthesis of thymol and carvacrol, such as DXR and TPS2, were investigated. RESULTS: A pot culture experiment revealed that cyanobacterial application significantly improved T. vulgaris L. growth indices, including plant height, dry and fresh weight, leaf and flower number, leaf area, and photosynthetic pigment content. Total phenol and flavonoid content in inoculated plants also showed a significant increase compared with the control. Anabaena torulosa ISB213 inoculation significantly increased root and shoot biomass by about 65.38% and 92.98% compared with the control, respectively. Nostoc calcicola ISB215 inoculation resulted in the highest amount of essential oil accumulation (18.08 ± 0.62) in T. vulgaris leaves, by about 72.19% compared with the control (10.5 ± 0.50%). Interestingly, the amount of limonene in the Nostoc ellipsosporum ISB217 treatment (1.67%) increased significantly compared with the control and other treatments. The highest expression rates of DXR and TPS2 genes were observed in the treatment of N. ellipsosporum ISB217, with 5.92‐fold and 5.22‐fold increases over the control, respectively. CONCLUSION: This research revealed the potential of the cyanobacteria that were studied as promising biostimulants to increase the production of biomass and secondary metabolites of T. vulgaris L., which could be a suitable alternative to chemical fertilizers. © 2024 Society of Chemical Industry. [ABSTRACT FROM AUTHOR]

From the aerial parts of Eupatorium fortunei, four thymol derivatives (1-4) were isolated and structurally elucidated by NMR and mass spectroscopic methods. Of which, a new dimeric thymol derivative (1) was characterized and its absolute configuration was established by electronic circular dichroism quantum method. In addition, the 1D and 2D NMR as well as HR-ESI mass spectral data of 2 were provided for the first time. Compounds 2-4 were evaluated for their inhibitory activity against α-glucosidase and acetylcholinesterase enzymes. All tested compounds showed weak inhibition at the concentration range of 1–256 μg/mL in both enzymatic assays. [ABSTRACT FROM AUTHOR]

The study aimed to establish a comprehensive method to evaluate the effects of thymol microcapsules/konjac glucomannan/low acyl gellan gum (TKL) edible composite coating on postharvest quality of blueberry. The late-ripening variety Baldwin was used as the test material. Based on the sensory, physiological and biochemical, nutrient, color, and texture perspectives, representative indicators were selected to comprehensively evaluate the effect of TKL preharvest spraying on blueberry quality using principal component analysis (PCA), cluster analysis, and correlation analysis. Results showed that the TKL coating treatment slowed down the decrease in sensory, fruit shape index, titratable acid, hardness, L*, b*, H*, and springing during storage of blueberry, reduced the increases in weight loss ratio, decay rate, malondialdehyde, and C*, and increased the contents of soluble solid, chewiness, resilience, total phenols, total flavonoids, and anthocyanidin. The TKL coating effectively slowed down the deterioration of blueberry quality. PCA analysis obtained 2 principal components with a cumulative variance contribution of 86.90%.The fitting of PCA scores with sensory values was an extremely significant positive correlation (P<0.01). Cluster analysis indicated that the blueberry quality of TKL coating treatment at 21-56 days was in the same category as the control at 7-35 days. Correlation showed that PCA scores were extremely significant and positively correlated with sensory evaluation (P<0.01).Cluster analysis showed that the quality of blueberry by TKL coating at 21-56 days was the same as that of the CK group at 7-35 days. The TKL coating treatment extended the storage period of Baldwin blueberry from 42 days to 63 days. The combination of PCA and cluster analysis could more scientifically, systematically, and accurately evaluate the effect of TKL coating on the postharvest preservation of blueberries, providing a theoretical basis for the application of TKL coating on postharvest fruit preservation. [ABSTRACT FROM AUTHOR]

Thymol (THY), as the natural monoterpene phenol, acts against oxidative stress and inflammatory processes. This study aimed to evaluate the anti-inflammatory effects and possible molecular mechanisms of THY via formalin-induced mouse and egg albumin-induced chick models alongside molecular docking and molecular dynamic (MD) simulations. THY (7.5, 15, and 30 mg/kg) was investigated, compared to celecoxib and ketoprofen (42 mg/kg), as antiinflammatory standards. THY dose-dependently and significantly (p < 0.05) decreased paw-licking and edema diameter parameters in formalin (phases I and II) and egg albumin-induced models. Moreover, THY (15 mg/kg) exerted better anti-inflammatory effects in combination with the standard drug ketoprofen than alone and with celecoxib. In silico studies demonstrated elevated binding affinities of THY with cyclooxygenase-2 (COX-2) than the COX-1 enzyme, and the ligand binds at a similar location where ketoprofen and celecoxib interact. The results of MD simulations confirmed the stability of the test ligand. THY exerted anti-inflammatory effects on Swiss mice and young chicks, possibly by interacting with COX-2. As a conclusion, THY might be a hopeful drug candidate for the management of inflammatory disorders. [ABSTRACT FROM AUTHOR]

Safe chemicals for drug withdrawal can be extracted from natural sources. This study investigates the effects of clonidine and Thymbra spicata extract (TSE) on mice suffering from morphine withdrawal syndrome. Thymol, which is the active constituent in TSE, was also tested. A total of 90 mice were divided into nine groups. Group 1 was the control group, while Group 2 was given only morphine, and Group 3 received morphine and 0.2 mg/kg of clonidine. Groups 4–6 were given morphine along with 100, 200, and 300 mg/kg of TSE, respectively. Groups 7–9 received morphine plus 30, 60, and 90 mg/kg of Thymol, respectively, for 7 days. An oral naloxone challenge of 3 mg/kg was used to induce withdrawal syndrome in all groups. Improvement of liver enzyme levels (aspartate aminotransferase, alkaline phosphatase, and alanine transaminase) (p <.01) and behavioral responses (frequencies of jumping, frequencies of two‐legged standing, Straub tail reaction) (p <.01) were significantly observed in the groups receiving TSE and Thymol (Groups 4–9) compared to Group 2. Additionally, antioxidant activity in these groups was improved compared to Group 2. Nitric oxide significantly decreased in Groups 4 and 6 compared to Groups 2 and 3 (p <.01). Superoxide dismutase increased dramatically in Groups 5, 8, and 9 compared to Groups 2 and 3 (p <.01). Groups 5–9 were significantly different from Group 2 in terms of malondialdehyde levels (p <.01). Certain doses of TSE and Thymol were found to alleviate the narcotics withdrawal symptoms. This similar effect to clonidine can pave the way for their administration in humans. Significance statement: Thymbra spicata extracts and Thymol may lessen narcotic drug withdrawal symptoms in specific dosages. Coadministration of T. spicata extract with morphine reduced the symptom severity of morphine withdrawal syndrome induced by naloxone. T. spicata extract and Thymol increase superoxide dismutase in morphine withdrawal groups. Thymol dramatically lowered the levels of alanine transaminase, aspartate aminotransferase, alkaline phosphatase activity, and total bilirubin. [ABSTRACT FROM AUTHOR]

Nanostructures are usually formed by solvent dissolution, but this paper proposes a green-chemistry method for thymol nano-encapsulation based on a chitosan–gelatin bio-copolymer matrix formation that enhances the physical stability to obtain a thymol-modified release system, with antioxidant capacity. Various ratios of chitosan–gelatin, gelatin types A and B, and crosslinkers were evaluated at a constant thymol concentration of 0.5 mg/ml. Gallic acid was chosen as the crosslinker. All batches were ultrasonicated to reduce particle size. The best conditions were obtained using a chitosan–gelatin ratio of 1:4 with type A gelatin, as those nanoparticles had higher physical stability, together with a smaller particle size (316.5 ± 2 nm) and higher thymol encapsulation efficiency (88 ± 3%). Antioxidant capacity was evaluated by DPPH, ABTS (radical inhibition 87.06 ± 4.38%, and 88.5 ± 4.42%, respectively), and a FRAP assay (1084.68 ± 54.32 µM Trolox equivalents). Release profiles were evaluated at two pH values (5.5, 7.0) and environmental temperatures (4, 25 °C). Diffusion was non-Fickian in all treatments. Gelatin type A systems exhibited a major physical stability, influencing the reduction of released thymol significantly. The research findings suggest that this submicronic dispersion can be used as a modified release system with high antioxidant activity and potentially serve as a preservative system during food storage. [ABSTRACT FROM AUTHOR]

OBJECTIVES. In this paper, we reviewed cough and herbal therapies. MATERIAL AND METHODS. Research methods included searching online databases such as Google, Google Scholar, ProQuest Central, and PubMed at Kirikkale University. We used terms like "cough", "herbal", "reflex", "Primula veris", "Primula elatior", "Thymus vulgaris", "Althea Officinalis", and "Mentha piperita" to find related articles. RESULTS. Coughing is a reflex that serves a legitimate physiological purpose by expelling fluids and debris from the lungs. Herbal teas and preparations with antioxidant and expectorant properties are made from medicinal herbs like Primula veris and Primula elatior. The phenolic monoterpene thymol, one of the primary components of thyme oil, is found primarily in thyme plants. Both thymol and thyme essential oil have lengthy histories of usage in conventional medicine, particularly for their upper respiratory system-targeted expectorant, anti-inflammatory, antiviral, antibacterial, and antiseptic properties. Historically, people have turned to the plant Althaea officinalis for help with treating respiratory issues, like cough. Officinalis extracts alone for dry cough therapy, while A. officinalis was more effective when combined with Zataria multiflora, Zingiber officinale, or Helix hedera. Furthermore, all types of coughs benefited from officinalis. One of the most popular types of herbal tea, known as a tisane, is peppermint, or Mentha piperita. Peppermint essential oil and tea made from the plant's leaves have long histories of usage in alternative medicine. Some studies have found that peppermint may have antiallergenic properties in addition to its antibacterial, antiviral, antioxidant, and anticancer properties. CONCLUSION. Cough is a persistent symptom of many acute and chronic illnesses. Primula veris, Thymus vulgaris, Althaea Officinalis, and Mentha piperita are some herbs used to treat cough. Cough patients can supplement their standard medical care with herbal remedies that contain these compounds. [ABSTRACT FROM AUTHOR]

Due to the emergence of drug resistance, treating Pseudomonas aeruginosa infections is a major health challenge. In a biofilm, bacteria are usually more resistant to antimicrobials than planktonic growth. Thus, antibiofilm compounds can be employed against bacterial infections. In this study, Zinc oxide (ZnO) nanoparticles (NPs) were prepared and functionalized by glutamic acid (ZnO@Glu). Next, the nanoparticles were conjugated with Thiosemicarbazone (ZnO@Glu- TSC), and their antibiofilm activity in combination with Thymol on P. aeruginosa strains was investigated. Physicochemical characterization by FT-IR and XRD analyses showed that the nanoparticles were synthesized properly and their purity was displayed by EDS mapping. The zeta potential of the NPs was − 7.7 mV which indicates the stability of the NPs. Also, the synthesized particles were in the nano-scale size range. Biofilm formation in P. aeruginosa strains was evaluated using Congo-Red agar assay and the antibacterial effect of Thymol and ZnO@Glu-TSC was also studied. Finally, the antibiofilm potential of Thymol, ZnO@Glu-TSC, and Thymol+ZnO@Glu-TSC NPs was studied by crystal violet staining assay. Thymol and ZnO@Glu-TSC NPs had stronger antibacterial potential in combination, and the minimum inhibitory concentration was 3.12–25.5 µg/mL. Also, the combination of the NPs with Thymol led to biofilm inhibition up to 95%, which was significantly higher than either agent alone. This work revealed that Thymol could enhance the antibacterial and antibiofilm potentials of ZnO@Glu-TSC NPs that provides a new option to combat P. aeruginosa infections after further research. [ABSTRACT FROM AUTHOR]

Salmonella is a hazardous bacterium that can lead to dangerous human infections, as well as catastrophic losses in chicken production. Disinfectants are frequently used in chicken houses to prevent the spread of zoonotic infections such as Salmonella strains. The emergence of bacteria strains resistant to various disinfectants is a serious problem when using disinfectants. The resistance of certain Salmonella serotypes to quaternary ammonium compounds is a feature of these phenomena and some Salmonella spp. may carry the qacEDl and qacA/B genes, which are responsible for this resistance. So the purpose of this study was to identify Salmonella serotypes and determine the most important virulence genes of the serotypes obtained from samples taken from dead chicken embryos. Evaluation of the resistance of Salmonella strains against various disinfectants (Quaternary ammonium compounds QACS, iodine, and virkon S) and determined the minimum inhibitory concentration (MIC) to investigate the antibacterial potential of plant essential oil components, such as thymol, cinnamaldehyde, and zingiberene, against Salmonella serotypes. A total of 115 samples were collected from dead chicken embryos, after isolation Salmonella isolates were reported to be 16/115 (13.9%). The most prevalent serotypes were Salmonella typhimurium, Salmonella kentucky, Salmonella anatum and Salmonella poona. Through the treatment of the bacteria at various concentrations, the effectiveness of the disinfectant was determined. Research has shown that the type and concentration of the disinfectant affect its biocidal activity. PCR was also used to detect the presence of qacED1 and qacA/B genes. [ABSTRACT FROM AUTHOR]

Background: Colorectal cancer (CRC) is one of the most common and deadly cancers worldwide. Different factors, such as environmental and genetic factors and lifestyle, affect it. Owing to the presence of phenolic, alkaloid, antioxidant, and terpenoid compounds, herbal compounds can be effective in the treatment of various cancers. Thymol is a natural monoterpene phenol that is abundant in some plants and exerts several biological effects. The aim of this study was to investigate the apoptotic, anti-proliferative effect and EGFR gene expression under the influence of thymol-loaded nanoliposome in SW84 and SW111 cell lines derived from colorectal cancer. Materials and methods: The lipid thin-film hydration method was used to synthesize thymol-loaded liposomes, and their characterization was performed using TEM, DLS, and HPLC analyses. SW84 and SW1111 cells were treated with thymol- and thymol-loaded liposomes at different doses, the inhibition of cell proliferation was evaluated using an MTT assay, the rate of apoptosis induction was assessed using flow cytometry, and EGFR gene expression was measured using real-time PCR. Results: The nanoparticles produced were spherical, uniform, and 200 ± 10 nm in size. HPLC analysis showed that approximately 98% thymol was loaded into the nanoliposome. The results of the MTT assay showed that thymol and thymol-nanoliposomes decreased the proliferation of SW84 and SW1111 cells in a concentration-dependent manner. The IC50 of thymol and thymol-nanoliposomes were 18 and 14.2 µg/ml for the SW48 cell line (P = 0.04) and 10.5 and 6.4 µg/ml for the SW1116 cell line (P = 0.001). Thymol-nanoliposomes significantly inhibited the proliferation of cancer cells compared to free thymol. Flow cytometry showed an increase in the percentage of apoptotic cells, especially in the thymol-nanoliposome group in the treated cells. Real-time PCR results also showed that thymol and thymol-nanoliposome both caused a decrease in the expression of EGFR genes in both cell lines, but this effect of decreasing gene expression was significantly higher in the thymol-nanoliposome group. Conclusions: Our results showed that thymol-nanoliposomes reduced proliferation, increased apoptosis, and decreased EGFR expression in colorectal cancer-derived cell lines. [ABSTRACT FROM AUTHOR]

Introduction: The drawbacks of using antibiotics as feed additives for blue foxes have gradually become apparent; moreover, thymol has wide-spectrum antimicrobial activity and has the potential to replace antibiotics in various animals. However, there are few reports on the effects of thymol on blue foxes. Methods: This study aimed to investigate the effects of different concentrations of thymol on the growth performance, apparent nutrient digestibility, serum biochemical indicators, intestinal morphology, and gut microbiota of blue foxes. Twenty-four male blue foxes (120 ± 5 d) of similar weight (6.05 ± 0.16 kg) were randomly divided into 4 groups. 0, 100, 200, and 300 mg/kg thymol were added to the basal diets of groups C, L, M, and H, respectively. Results: Compared with those in the C group, the addition of 100 mg/kg thymol to the diet significantly increased organic matter (OM) digestibility, crude protein (CP) digestibility, immunoglobulin (Ig) A, IgM, the VH of the duodenum, the CD of the jejunum, the VH of the ileum, and the VH/CD of the ileum (P < 0.05) and strongly significantly increased IgG (P < 0.01). The addition of 200 mg/kg thymol to the diet increased the VH/CD of the duodenum (P < 0.05). The addition of 300 mg/kg thymol to the diet significantly increased the VH and CD of the jejunum (P < 0.05). The addition of 200 mg/kg and 300 mg/kg thymol to the diets increased the final weight (FW) (P < 0.05). Adding 100 mg/kg thymol significantly increased the levels of interleukin-4 (IL- 4) and catalase (CAT) compared with those in the other groups (P < 0.05). 16S rRNA gene detection revealed that thymol can change the abundances of Bifidobacterium, Fusobacterium, Allobaculum, Streptococcus, Megasphaera, and Lactobacillus in the gut. Conclusion: The addition of thymol to diets can increase the abundance of Bifidobacterium, Fusobacterium, and Allobaculum, which may contribute to improving the growth performance of blue foxes. [ABSTRACT FROM AUTHOR]

The quantity and quality of essential oil extracted from the plant is strongly influenced by the extraction conditions, so optimizing the extraction conditions can help us to achieve the most essential oil content with the best quality. Satureja sahendica Bornm. is an endemic medicinal plant of Iran, which is of great importance due to its high essential oil and thymol content. In this research, the effect of plant particle size (mesh sizes of 12, 18 and 35) and the ratio of plant material to water (1:5, 1:10 and 1:15 w/v) on essential oil content and compositions of this plant were evaluated. The essential oils were extracted based on hydro-distillation method by Clevenger’s apparatus and then analyzed using GC/MS and GC/FID. The results indicated that the extracted essential oil decreased with the decrease in the plant particle size. The optimal ratio of plant material to water in order to obtain more essential oil was different depending on the plant particle size. The highest of essential oil content (2.15% v/w) was obtained from plant material with mesh size of 12 in the ratio of 1:15 plant material to water. The number, type and amount of essential oil compounds were strongly affected by different treatments. The highest amount of thymol (81.79%) as the most important component of the Satureja sahendica essential oil was obtained from samples with mesh size of 35 and in the ratio of 1:10 plant material to water. Determining the most appropriate extraction conditions can be different depending on the purpose and desired chemical composition of the essential oil. [ABSTRACT FROM AUTHOR]

In this study, we present a method for ion-associated liquid phase (IALP) separation and concentration of analytes from an aqueous matrix into an IALP formed in situ by the charge neutralization reaction of organic cations and anions, without centrifugation. The effects of various factors on the extraction efficiency and other parameters are investigated, whereas no instrumental stirring, such as vortexing or ultrasonics, is required because the solvent (IALP) is formed in situ. The organic cation and anion used are ethylhexyloxypropylammonium and dodecyl sulfate, respectively. The developed in situ IALP microextraction method for phase separation without centrifugation is tested using the thymol blue dye and several endocrine disruptors. The tested endocrine disruptors (bisphenol A, 17β-estradiol, 17α-ethinylestradiol, and estrone) are analyzed via high-performance liquid chromatography/fluorescence detection, with respective detection limits of 0.02, 0.02, 0.02, and 0.4 μg L−1, and the corresponding enrichment factor ranging from 47 to 71. This IALP microextraction method can be used to separate and concentrate environmental water samples of different matrices. The employed IALP is fast and easy to use, enables an approximately 100-fold analyte concentration, and has a high affinity for estrogens, thus holding promise for the separation, concentration, and quantitation of diverse trace analytes. [ABSTRACT FROM AUTHOR]

The essential oil (EO) and ethanolic extract (EE) of Algerian Ammoides verticillata (Brot.) Breistr. were investigated for chemical composition and biological activities. GC and GC/MS analyses of the EO revealed thymol, carvacrol, p-cymene, limonene, and γ-terpinene as major compounds. HPLC/DAD/UV analysis of EE identified luteolin 7-O-glucoside as the most prominent component. The EO showed moderate inhibition activity against acetyl and butyrylcholinesterase (AChE and BChE) compared to galanthamine, while no activity for EE was observed. Both extracts showed higher to similar antioxidant activity to that of BHT in DPPH and ABTS•+ radical scavenging activity and ferric and copper reduction power. Nevertheless, weak β-carotene bleaching inhibition activity was noted for both extracts. Additionally, the EE displayed a significant antihemolytic effect against AAPH-induced hemolysis. Moreover, EO and EE showed high and no antibacterial activities, respectively. Thus, A. verticillata might represent a useful material in pharmaceutical, nutraceutical, and cosmetic applications. [ABSTRACT FROM AUTHOR]