Search

The demand for natural bioactive compounds and products that contain these compounds has increased because of the desire to live healthier. The Response Surface Methodology (RSM) was used to find the optimum parameters for getting the highest level of total phenolic compounds (TPC) and antioxidant compounds (AC) out of green garlic leaves (Allium sativum L.). In this study the ethanol concentration (60--80%), application time (15--45 min.), and product/solvent (P/S) ratio (1/50-- 1/100) were selected as independent variables. As responses, TPC and AC analyses were used. The study found that 69.70% ethanol, 15 min., and 1/50 U/S ratio were the optimum conditions. Under these conditions, the experimental TPC and AC values of the extracted samples were found to be 15.18±1.4 mg GAE/g DM and 88.16±1.18%, respectively. The fact that the experimental values were very close to RSM's expected values demonstrated that the models were suitable. [ABSTRACT FROM AUTHOR]

Secondary growth in garlic depreciates its visual aspect and thereby renders the crop unviable for trade. Therefore, farmers commonly reduce fertilization and impose drought and oxidative stress caused by high-dose pesticides to reduce secondary growth in garlic plants. However, these procedures can be considered adverse, unhealthy, and environmentally inappropriate. To remedy this scenario, we investigated whether spraying growth inhibitors would prevent secondary growth in garlic plants. First, we evaluated the effects of abscisic acid, trinexapac-ethyl, chlormequat chloride, and paclobutrazol treatments on garlic plants grown in polyethylene tanks (250 m3). We then analyzed the effects of deficit irrigation combined with the application of trinexapac-ethyl (sprayed two or three times) and the application of trinexapac-ethyl, chlormequat chloride, or paclobutrazol alone (each sprayed two or three times) on garlic plants grown in the field, comparing them with the effects of deficit irrigation (control treatment) alone. The in-field experiment was replicated with the following treatments: control (deficit irrigation) and trinexapac-ethyl (sprayed two or three times) treatments. We analyzed the physiological, biometric, and production parameters affecting secondary growth in garlic plants. We observed that trinexapac-ethyl could efficiently regulate secondary growth without causing physiological disturbances in garlic plants. Our results provide valuable information that will contribute to the development of a sustainable technique to replace the current practices used by farmers to prevent secondary growth in garlic plants. [ABSTRACT FROM AUTHOR]

Secondary growth in garlic depreciates its visual aspect and thereby renders the crop unviable for trade. Therefore, farmers commonly reduce fertilization and impose drought and oxidative stress caused by high-dose pesticides to reduce secondary growth in garlic plants. However, these procedures can be considered adverse, unhealthy, and environmentally inappropriate. To remedy this scenario, we investigated whether spraying growth inhibitors would prevent secondary growth in garlic plants. First, we evaluated the effects of abscisic acid, trinexapac-ethyl, chlormequat chloride, and paclobutrazol treatments on garlic plants grown in polyethylene tanks (250 m3). We then analyzed the effects of deficit irrigation combined with the application of trinexapac-ethyl (sprayed two or three times) and the application of trinexapac-ethyl, chlormequat chloride, or paclobutrazol alone (each sprayed two or three times) on garlic plants grown in the field, comparing them with the effects of deficit irrigation (control treatment) alone. The in-field experiment was replicated with the following treatments: control (deficit irrigation) and trinexapac-ethyl (sprayed two or three times) treatments. We analyzed the physiological, biometric, and production parameters affecting secondary growth in garlic plants. We observed that trinexapac-ethyl could efficiently regulate secondary growth without causing physiological disturbances in garlic plants. Our results provide valuable information that will contribute to the development of a sustainable technique to replace the current practices used by farmers to prevent secondary growth in garlic plants.

Introduction: Garlic (Allium sativum L.), has been cultivated in various countries and is valued for its medicinal and culinary properties. It contains bioactive compounds such as phenolic compounds, organic sulfides, polysaccharides, and saponins, with allicin being a particularly studied compound. These compounds have been shown to possess antioxidant, antimicrobial, antiviral, anticancer, anti-inflammatory, anti-hyperlipidemic and antihypertensive effects. Garlic has been used for over 5000 years as a curative plant and has potential applications in food science, medicine, and nutraceuticals. Aim of the Study: The aim of the study is to provide a comprehensive review of the overall impact of Allium sativum L. on human health and in order to draw attention to the benefits of regular consumption. Materials and methods: A comprehensive review of scientific and medical literature was conducted utilizing PubMed and Google Scholar databases. Searching terms were: garlic, Allium sativum L., garlic antiinflammatory, garlic anticancer, garlic health effects. Conclusion: Allium sativum L. is associated with a comprehensive range of beneficial effects on the human body. These include anti-inflammatory and antioxidant properties, positive influence on lipid profile, cardiovascular system, and the anticancer activity among others by stimulation of tumor apoptosis. As a result, garlic and its bioactive compounds hold promise as functional foods or nutraceuticals for the prevention and treatment of various diseases. [ABSTRACT FROM AUTHOR]

Abstract With global warming, heat stress has become an important factor that seriously affects crop yield and quality. Therefore, understanding plant responses to heat stress is important for agricultural practice, but the molecular mechanism of high-temperature tolerance in garlic remains unclear. In this study, ‘Xusuan No. 6’ was used as the experimental material. After heat stress for 0 (CK), 2 and 24 h, transcriptome sequencing was used to screen metabolic pathways and differentially expressed genes (DEGs) closely related to heat stress and was further verified by quantitative real-time polymerase chain reaction (qRT-PCR). A total of 86,110 unigenes obtained from the raw transcriptome sequencing data were spliced. After 2 h of heat treatment, the expression levels of 8898 genes increased, and 3829 genes were decreased in leaves. After 24 h, the expression levels of 7167 genes were upregulated, and 3176 genes were downregulated. Gene Ontology enrichment analysis showed that DEGs were mainly enriched in seven categories: cellular processes, metabolic processes, binging, catalytic activity, cellular anatomical entity and protein-containing complex response to stimulus. Kyoto Encyclopedia of Genes and Genomes pathway enrichment showed that DEGs are involved in protein processing in the endoplasmic reticulum, plant hormone signal transduction, phenylpropanoid biosynthesis, and photosynthetic antenna proteins. Six genes were selected and further verified by qRT-PCR. In this study, the full-length transcriptome of garlic was constructed, and the regulatory genes related to the heat resistance of garlic were studied. Taken together, these findings can provide a theoretical basis for the cloning of heat resistance genes in garlic and for the analysis of heat resistance mechanisms.

Copyright of Glasnik Zastite Bilja is the property of Zadruzna Stampa D.D. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Invertases are involved in plant growth, development, and stress adaptation; however, invertase-encoding genes have not yet been reported in Allium species. In this study, we identified 23 invertase izogenes in garlic (Allium sativum L.): 11 encoding putative neutral/alkaline (AsN/AINV1–11) and 12 acid (6 cell-wall—AsCWINV1–6 and 6 vacuolar—AsVINV1–6) enzymes. Among them, AsN/AINV1, 3, 8–10, AsCWINV2–5, and AsVINV2–6 showed significant transcription in garlic organs (roots, bulbs, pseudostems, leaves, sprouts, and reproductive parts) in a tissue-specific manner, whereas the AsN/AINV4–6, 11, AsCWINV1, 6, and AsVINV1 genes had weak or no detectable expression. Gene promoters contained nine, nine, and sixteen hormone-, stress-, and light-responsive cis-regulatory elements, respectively, and fifteen sites related to transcription factor binding and plant development. Expression analysis revealed that 12 invertase genes strongly transcribed in the roots of A. sativum cv. Ershuizao showed differential expression in the roots and leaves of A. sativum cv. Sarmat exposed to abiotic stresses (low temperature, high salinity, and drought) and phytohormones (abscisic acid and methyl jasmonate), which was significantly correlated with glucose, fructose, and sucrose contents. Our results should further functional analysis of invertases from Allium crops and contribute to the breeding of stress-tolerant varieties. [ABSTRACT FROM AUTHOR]

Apple replant disease (ARD) is a serious threat to newly replanted apple seedlings. The alleviation of ARD is of great significance for the healthy development of the apple industry. In this study, we investigated the effects of leaf fermentation products (LFP) of Allium sativum L. on the replanted soil environment and Malus hupehensis Rehd. seedlings. The results showed that LFP increased biomass accumulation, changed root architecture, increased root anti-oxidant enzyme activity, and decreased root MDA content under replanted conditions. In addition, the application of LFP increased soil nutrients and soil enzyme activity and reduced phenolic acid content. Furthermore, the LFP enriched the number of beneficial bacteria and reduced the number of harmful fungi, which positively affected the soil microbial community structure. Overall, our results demonstrated that LFP of A. sativum L. could alleviate the occurrence of ARD and provide new insights for the reuse of the leaves of A. sativum L. and the prevention of ARD. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agriculture & Nature / Kahramanmaraş Sütçü İmam Üniversitesi Tarım & Doğa Dergisi is the property of Kahramanmaras Sutcu Imam Universitesi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: Garlic (Allium sativum L.), has been cultivated in various countries and is valued for its medicinal and culinary properties. It contains bioactive compounds such as phenolic compounds, organic sulfides, polysaccharides, and saponins, with allicin being a particularly studied compound. These compounds have been shown to possess antioxidant, antimicrobial, antiviral, anticancer, anti-inflammatory, anti-hyperlipidemic and antihypertensive effects. Garlic has been used for over 5000 years as a curative plant and has potential applications in food science, medicine, and nutraceuticals. Aim of the Study: The aim of the study is to provide a comprehensive review of the overall impact of Allium sativum L. on human health and in order to draw attention to the benefits of regular consumption. Materials and methods: A comprehensive review of scientific and medical literature was conducted utilizing PubMed and Google Scholar databases. Searching terms were: garlic, Allium sativum L., garlic anti-inflammatory, garlic anticancer, garlic health effects. Conclusion: Allium sativum L. is associated with a comprehensive range of beneficial effects on the human body. These include anti-inflammatory and antioxidant properties, positive influence on lipid profile, cardiovascular system, and the anticancer activity among others by stimulation of tumor apoptosis. As a result, garlic and its bioactive compounds hold promise as functional foods or nutraceuticals for the prevention and treatment of various diseases.

Copyright of Anadolu (1300-0225) is the property of Anadolu Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To improve garlic breeding, it is important to determine the morphological differences between garlic genotypes of local origin. This study was conducted to determine the phenotypic diversity of Turkish softneck garlic (Allium sativum L. sub. var. sativum) genotypes using morphological traits determined based on International Union for the Protection of New Varieties of Plants (UPOV) descriptors. Twenty-six garlic genotypes were characterized using 15 quantitative morphological characteristics. Principal Component Analysis (PCA) revealed that the first four principal components explained 84.58% of the total variation among the 26 garlic genotypes. The characters with the greatest contribution to variability were identified as Plant Height (PH), Pseudostem Diameter (PSD), Leaf Length (LL), Leaf Width (LW), Bulb Weight (BW), Yield (Y), Bulb Height (BH), Bulb Diameter (BD), Clove Height (CH), Bulb Height/Bulb Diameter ratio (BH/BD), Vumber of Cloves (NC), Clove Weight (CW), Clove Width (CWi), and Clove Thickness (CT). Significant differences were observed in the quantitative traits of garlic genotypes. As a result of the study, AS14 stood out for its clove weight, length, width, and thickness, while AS13 had the highest bulb weight and yield. The present findings could be reliably used in the development of new garlic varieties. [ABSTRACT FROM AUTHOR]

Allium plants (especially garlic and onions) are useful condiments in most kitchens for the preparation of delicacies and in the preparation of decoctions in traditional medicine for the treatment of some emanating ailments, have its shoots sprouted for vegetables while the bulbs are usually discarded. The commonly discarded bulbs may have improved the antioxidant potentials. These improved properties could be utilized to treat or manage some degenerative and non-communicable diseases. The aim of this study was to determine the effects of sprouting on the antioxidant potentials of garlic (Allium sativum) and onions (Allium cepa). The samples of garlic and bulbs were sprouted for 0 to 10 days. The phytochemicals, phenols, flavonoids, and ascorbic acid; and the antioxidant activities such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity were investigated on the garlic and bulbs using standard methods. A significantly (P<0.05) higher total flavonoid content was observed in methanol extract of onions sprouted for eight days (7.84 mg/g RE) and in methanol extract of garlic sprouted for 10 days (20.16 mg/g RE). The onions extracts expressed higher phenolic content on day eight of sprouting, while that of garlic revealed a significant (P<0.05) increase till day 10. The DPPH scavenging activity of sprouted garlic and onions recorded the minimum activity on day eight. Garlic highest ascorbic acid content of 8.820 mg/g was recorded on the 10th day, while that of onions was 6.29 mg/g on the 6th day. The results from this study revealed that sprouting of onions and garlic vegetables may be an effective means of improving the antioxidant potential of some Allium plants. The results from this study revealed that sprouting of onions and garlic vegetables might be an excellent means of improving the antioxidant potential of Allium plants. This study conclude that sprouting should be between four to six days for onions and up to 10 days for garlic before processing for consumption. [ABSTRACT FROM AUTHOR]

The objective of this study was to analyse the variability of phenological characteristics in garlic genotypes over two vegetation years and to assess the influence of environmental factors on different growth stages across 36 genotypes and two garlic varieties. The primary phenological development stages were examined according to BBCH standards, considering the specific environmental factors of the experimental location (44°21'55"N, 23°48'18"E). For autumn varieties, the vegetative period of garlic genotypes was longer during the 2022/2023 season (253.79 days) compared to 2021/2022 (224.99 days). Conversely, in spring varieties, the vegetative period was shorter in 2023 (108.99 days) than in 2022 (130.5 days). This reduction was attributed to abundant precipitation, influencing the growth and development of the crop and reducing the plant's lifespan. The results underscore the significant impact of environmental factors, particularly temperature and precipitation, on the developmental stages of garlic plants. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Garlic is a rich source of phenolic compounds having a proven positive effect on human health. The objective of this study was to analyze garlic from different origins and evaluate the influence of organic and conventional agronomic practices on concentrations of phenolic compounds and their potential health benefit of soft- and hard-neck garlic cultivars. A total of 30 garlic samples from different parts of the world analyzed on phenolic compounds including caffeic, ferulic, p-coumaric, gallic acids, quercetin, and allicin were identified. Moreover, some potential inhibitors against key enzymes relating to diabetes including α-amylase and α-glucose were determined. Caffeic acid, ranging between 20.57 and 0.80 mg/kg DM, was the main phenolic acid, found in all tested garlic varieties. The content of phenolic acids, flavonoids, and allicin was significantly higher in organic garlic. The allicin content in organic garlic varied from 4.51 to 26.79 mg/g DM while these compounds in conventional garlic ranged between 2.71 and 19.10 mg/g DM, respectively. A correlation (r = − 0.203 and r = 0.195, p < 0.05) was observed between allicin content and α-amylase, and α-glucose inhibition was observed, respectively. Therefore, organic garlic has greater potential health benefits than conventional garlic. [ABSTRACT FROM AUTHOR]

Invertases are involved in plant growth, development, and stress adaptation; however, invertase-encoding genes have not yet been reported in Allium species. In this study, we identified 23 invertase izogenes in garlic (Allium sativum L.): 11 encoding putative neutral/alkaline (AsN/AINV1–11) and 12 acid (6 cell-wall—AsCWINV1–6 and 6 vacuolar—AsVINV1–6) enzymes. Among them, AsN/AINV1, 3, 8–10, AsCWINV2–5, and AsVINV2–6 showed significant transcription in garlic organs (roots, bulbs, pseudostems, leaves, sprouts, and reproductive parts) in a tissue-specific manner, whereas the AsN/AINV4–6, 11, AsCWINV1, 6, and AsVINV1 genes had weak or no detectable expression. Gene promoters contained nine, nine, and sixteen hormone-, stress-, and light-responsive cis-regulatory elements, respectively, and fifteen sites related to transcription factor binding and plant development. Expression analysis revealed that 12 invertase genes strongly transcribed in the roots of A. sativum cv. Ershuizao showed differential expression in the roots and leaves of A. sativum cv. Sarmat exposed to abiotic stresses (low temperature, high salinity, and drought) and phytohormones (abscisic acid and methyl jasmonate), which was significantly correlated with glucose, fructose, and sucrose contents. Our results should further functional analysis of invertases from Allium crops and contribute to the breeding of stress-tolerant varieties.

Apple replant disease (ARD) is a serious threat to newly replanted apple seedlings. The alleviation of ARD is of great significance for the healthy development of the apple industry. In this study, we investigated the effects of leaf fermentation products (LFP) of Allium sativum L. on the replanted soil environment and Malus hupehensis Rehd. seedlings. The results showed that LFP increased biomass accumulation, changed root architecture, increased root anti-oxidant enzyme activity, and decreased root MDA content under replanted conditions. In addition, the application of LFP increased soil nutrients and soil enzyme activity and reduced phenolic acid content. Furthermore, the LFP enriched the number of beneficial bacteria and reduced the number of harmful fungi, which positively affected the soil microbial community structure. Overall, our results demonstrated that LFP of A. sativum L. could alleviate the occurrence of ARD and provide new insights for the reuse of the leaves of A. sativum L. and the prevention of ARD.

Drought has become a serious environmental factor that affects the growth and yield of plants. Fructan, as an important storage compound in garlic, plays an important role in drought tolerance. Genomic changes in plants under drought stress clarify the molecular mechanism of plants' responses to stress. Therefore, we used RNA-seq to determine the transcriptomic changes in garlic under drought stress and identified the key module related to fructan metabolism by weighted gene co-expression network analysis. We conducted a comprehensive analysis of the garlic transcriptome under drought stress over a time course (0, 3, 6, 9, 12, 15 d). Drought significantly induces changes in gene expression. The number of specifically expressed genes were 1430 (3 d), 399 (6 d), 313 (9 d), 351 (12 d), and 1882 (15 d), and only 114 genes responded at each time point. The number of upregulated DEGs was higher than the number of downregulated DEGs. Gene ontology and a Kyoto Encyclopedia of Genes and Genomes analysis showed that garlic was more likely to cause changes in carbohydrate metabolism pathways under drought stress. Fructan content measurements showed that drought stress significantly induced fructan accumulation in garlic. To determine whether there were modules involved in the transcriptional regulation of fructan content in garlic, we further analyzed the genes related to fructan metabolism using WGCNA. They were enriched in two modules, with F-box protein and GADPH as hub genes, which are involved in garlic fructan metabolism in response to drought stress. These results provide important insights for the future research and cultivation of drought-tolerant garlic varieties. [ABSTRACT FROM AUTHOR]

Garlic is commonly used as vegetable or spice and as a herb in folklore as well as traditional medicine in many countries. The current study aimed to compare the chemical composition, antioxidant activity, and the content of selected polyphenolic compounds in cloves as well as leaves of winter garlic plants of the Harnaś and Ornak cultivars, which are of Polish origin. Garlic was grown from cloves for three years (2018–2020) in the experimental field of the University of Agriculture in Krakow, Poland. The research material was harvested on three dates: May; June, unripe garlic plants; and in July, the plant at full maturity. The content of vitamin C in the fresh material was determined. The proximate analysis was determined in the freeze-dried plants of garlic, and the total carbohydrate content was calculated. The antioxidant activity and the content of selected polyphenolic compounds were also determined. Garlic cloves showed a higher content of dry matter, and total carbohydrates than the leaves of garlic plants. On the other hand, in the leaves, a significantly higher content of protein, total fat and ash were observed. Additionally, garlic leaves were characterised by a higher content of vitamin C, total polyphenols, and a higher antioxidant activity than garlic cloves. The leaves of young garlic plants from the May harvest were distinguished by a higher content of these compounds. The dominant phenolic compounds were catechin and epicatechin. The leaves of young plants can be a valuable source of bioactive substances, especially in early spring. [ABSTRACT FROM AUTHOR]

Garlic (Allium sativum L.) is an aromatic herb known for its culinary and medicinal uses for centuries. Both unprocessed (white) and processed (black) garlic are known to protect against the pathobiology of neurological disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD), which has been attributed to their anti-inflammatory and antioxidant properties. The information on the effects of processed and unprocessed garlic on neuronal process outgrowth, maturation, and synaptic development is limited. This study aimed at investigating and comparing the effects of the ethanol extracts of unprocessed (white garlic extract, WGE) and processed (black garlic extract, BGE) garlic on the maturation of primary hippocampal neurons. Neurite outgrowth was stimulated in a dose-dependent manner by both WGE and BGE and the most effective doses were 15 μg/mL and 60 μg/mL, respectively, without showing cytotoxicity. At this optimal concentration, both extracts promoted axonal and dendritic growth and maturation. Furthermore, both extracts substantially increased the formation of functional synapses. However, the effect of WGE was more robust at every developmental stage of neurons. In addition, the gas chromatography and mass spectrometry (GC-MS) analysis revealed a chemical profile of various bioactives in both BGE and WGE. Linalool, a compound that was found in both extracts, has shown neurite outgrowth-promoting activity in neuronal cultures, suggesting that the neurotrophic activity of garlic extracts is attributed, at least in part, to this compound. By using network pharmacology, linalool's role in neuronal development can also be observed through its modulatory effect on the signaling molecules of neurotrophic signaling pathways such as glycogen synthase kinase 3 (GSK3β), extracellular signal-regulated protein kinase (Erk1/2), which was further verified by immunocytochemistry. Overall, these findings provide information on the molecular mechanism of processed and unprocessed garlic for neuronal growth, survival, and memory function which may have the potential for the prevention of several neurological disorders. [ABSTRACT FROM AUTHOR]

Garlic (Allium sativum L.), is used as both a food and traditional medicine for several illnesses throughout the world. 7 garlic cultivars (Novozamocky, Lumir, Mojmir, Havran, Garpel, Eden Rose, and Bjetin) were analyzed in this study. Since modern consumer demands encourage the consumption of foods with positive effects on human health, research into the nutritional properties and chemical composition of traditional crops, like garlic, is important. Knowledge of these properties could support the cultivation of cultivars with the highest content of bioactive compounds. Total polyphenol content (TPC) determined by Folin - Ciocalteau method ranged from 797.11 to 1183.98 mg GAE.kg-1 DM. Total flavonoid content (TFC) determined by the aluminum chloride method ranged from 15.96 to 28.18 mg CE.kg-1 DM. Antioxidant activity (AA) determined by the ABTS method ranged from 1.97 to 4.42 mmol TE.kg-1 DM. Antioxidant activity (AA) determined by the FRAP method ranged from 1.12 to 2.64 mmol TE.kg-1 DM. Statistical evaluation of results showed a difference between garlic cultivars. The highest antioxidant activity and the highest content of bioactive substances were determined in the cultivar Garpel. High positive correlations (p < 0.001) were determined between TPC and TFC (r = 0.746), TPC and AA ABTS (r = 0.862), TPC and AA FRAP (r = 0.922), TFC and AA ABTS (r = 0.792), TFC and AA FRAP (r = 0.808), and AA ABTS and AA FRAP (r = 0.896). Garlic is confirmed to be a natural source of antioxidants, polyphenols, and flavonoids. [ABSTRACT FROM AUTHOR]

Introduction:In this study, a new high performance liquid chromatographic method was developed to determine the amount of allicin (AL) and s-allyl cysteine (SAC) in ;Allium sativum L. extracts.Methods:In the method, C18 column (5 µm x4.6 mm x150 mm) was used as the stationary phase at 25 ºC and acetonitrile: water (70:30, v/v) mixture was used as mobile phase with 1 mL/min flow rate. Isocratic elution was applied. The injection volume was 20 μL. Measurements were carried out at 254 nm with ultraviolet detection. Retention times for AL and SAC were 1.1 and 2.4 min, respectively. The method was validated according to International Conference on Harmonization criteria.Results:The limit of detection values for AL and SAC were 0.6 μg/mL and 1.5 μg/mL, respectively. The limit of quantitation values for AL and SAC were 2 μg/mL and 5 μg/mL, respectively. The linearity of the method was between 2-100 μg/mL and 5-30 μg/mL for AL and s-allyl cysteine, respectively. The developed method was also validated and applied to three different trade extracts.Conclusion:This new method, which is quite fast, simple and economical, can be used in the analysis of ;Allium sativum L. extracts, which are named as black garlic in the contents of food supplements.

Garlic (Allium sativum L.) is a versatile horticultural commodity with multiple medicinal properties. In this study, we determined the content of macroelements (K, Na, Ca, Mg, P) and microelements (Cu, Zn, Mn, Fe, Cr, Ni, Co, Pb and Cd), the content of phenolic acids (gallic acid, chlorogenic acid, ferulic acid, p-hydroxybenzoic acid, caffeic acid) and L-ascorbic acid in selected cultivars of garlic (Bjetin, Eden Rose, Garpel, Havran, Mojmir, Novozamocky). Statistical analysis indicated, that the Bjetin is characterized mainly by a high content of minerals (Mn, Fe, Ca Co), while Garpel and Mojmir are characterized by higher levels of ferulic acid, gallic acid, and p-hydroxybenzoic acid. Novozamocky is characterized by a high content of chlorogenic acid. Positive correlations between Pb content and gallic acid, ferulic acid, and p-hydroxybenzoic acid content, and negative correlation between Pb content and chlorogenic acid content were determined. [Display omitted] • Garlic is a rich source of L-ascorbic acid and phenolic acids. • Among the identified phenolic acids, gallic acid was most represented. • Garlic is a rich source of minerals. • Positive correlations between Pb content and gallic acid, ferulic acid, and p-hydroxybenzoic acid content, and negative correlation between Pb content and chlorogenic acid content were determined. • Regular consumption of selected species of the genus Allium can contribute to an increased intake of micronutrients and organic compounds. [ABSTRACT FROM AUTHOR]

In this study, 39 flavin-containing monooxygenase genes were identified in the genome of garlic (Allium sativum L.). The distribution of AsFMOs into three phylogenetic clades associated with N-oxygenation (22 proteins), auxin biosynthesis (13 proteins), and S-oxygenation (4 proteins) has been shown. FAD and NADPH binding, FMO-identifying, and FATGY motifs were found in the AsFMO sequences. AsFMOs transcripts were present in all garlic organs with a maximum in roots, leaves, peduncles, and air bulbs. In response to infection with the pathogenic fungus Fusarium proliferatum, differential expression of clade I genes (AsFMO4, AsFMO11, AsFMO12, and AsFMO35) was detected in the roots of cv. Sarmat and Strelets, contrasting in Fusarium rot resistance. At the same time, the expression response of the clade III AsFMO18 gene involved in alliin biosynthesis was similar for both cultivars, regardless of their resistance/susceptibility to Fusarium. This suggests the redundancy of genes of clades I and III in plant responses to infection. The AsFMO35 coding and regulatory sequences were analyzed in cv. Sarmat and Strelets. It was shown that the AsFMO35 promoter differs by the presence of the ABA-associated cis-regulatory element ABRE in cv. Strelets susceptible to Fusarium rot. [ABSTRACT FROM AUTHOR]

Dehydration-responsive element-binding (DREB) transcription factors (TFs) of the A1 and A2 subfamilies involved in plant stress responses have not yet been reported in Allium species. In this study, we used bioinformatics and comparative transcriptomics to identify and characterize DREB A1 and A2 genes redundant in garlic (Allium sativum L.) and analyze their expression in A. sativum cultivars differing in the sensitivity to cold and Fusarium infection. Eight A1 (AsaDREB1.1–1.8) and eight A2 (AsaDREB2.1–2.8) genes were identified. AsaDREB1.1–1.8 genes located in tandem on chromosome 1 had similar expression patterns, suggesting functional redundancy. AsaDREB2.1–2.8 were scattered on different chromosomes and had organ- and genotype-specific expressions. AsaDREB1 and AsaDREB2 promoters contained 7 and 9 hormone- and stress-responsive cis-regulatory elements, respectively, and 13 sites associated with TF binding and plant development. In both Fusarium-resistant and -sensitive cultivars, fungal infection upregulated the AsaDREB1.1–1.5, 1.8, 2.2, 2.6, and 2.8 genes and downregulated AsaDREB2.5, but the magnitude of response depended on the infection susceptibility of the cultivar. Cold exposure strongly upregulated the AsaDREB1 genes, but downregulated most AsaDREB2 genes. Our results provide the foundation for further functional analysis of the DREB TFs in Allium crops and could contribute to the breeding of stress-tolerant varieties. [ABSTRACT FROM AUTHOR]

Background: Herbal medications are an effective alternative in dental endodontic treatment due to their antimicrobial, anti-inflammatory, and biocompatibility properties and thus they are more biocompatible and less cytotoxic. The antibacterial, antifungal, and antiviral properties of garlic (Allium sativum L.) support broad-spectrum activity against gram-positive and gram-negative organisms and effectiveness against multidrug-resistant organisms that are essential as endodontic materials. Purpose: The purpose of this literature review is to analyze how the antimicrobial efficacy of garlic (Allium sativum L.) extract can be used as a root canal irrigant in endodontic treatment. Review: The development of pulp and periapical disease involves high-intensity bacterial activity that proliferates and produces toxic side products such as organic acids. When crushed or minced, garlic releases allicin compounds through the enzymatic action of alliinase (cysteine sulfoxide lyase) on alliin. Allicin, organosulfur compounds, and antioxidant compounds in garlic extract can exert antimicrobial role by inhibiting the synthesis of pathogenic microorganisms, fighting the resulting infection, and working synergistically with other antimicrobial agents to increase the effectiveness of treatment against antibioticresistant bacterial infections. In comparison to other antimicrobial agents, a number of studies have shown that there is no significant difference between garlic extract and sodium hypochlorite (NaOCl) in exerting bactericidal effects against pathogenic bacteria. Other studies have also shown that garlic extract has good dentin penetration properties as well as ideal flow and wetting capabilities. Conclusion: Garlic (Allium sativum L.) extract has good antimicrobial efficacy, dentin penetration, as well as ideal properties of root canal irrigation in endodontic treatment. [ABSTRACT FROM AUTHOR]

As the main reserve carbohydrate in garlic, fructan contributes to garlic's yield and quality formation. Numerous studies have shown that plant fructan metabolism induces a stress response to adverse environments. However, the transcriptional regulation mechanism of garlic fructan in low-temperature environments is still unknown. In this study, the fructan metabolism of garlic seedlings under low-temperature stress was revealed by transcriptome and metabolome approaches. With the extension of stress time, the number of differentially expressed genes and metabolites increased. Using weighted gene co-expression network analysis (WGCNA), three key enzyme genes related to fructan metabolism were screened (a total of 12 transcripts): sucrose: sucrose 1-fructosyltransferase (1-SST) gene; fructan: fructan 6G fructosyltransferase (6G-FFT) gene; and fructan 1-exohydrolase (1-FEH) gene. Finally, two hub genes were obtained, namely Cluster-4573.161559 (6G-FFT) and Cluster-4573.153574 (1-FEH). The correlation network and metabolic heat map analysis between fructan genes and carbohydrate metabolites indicate that the expression of key enzyme genes in fructan metabolism plays a positive promoting role in the fructan response to low temperatures in garlic. The number of genes associated with the key enzyme of fructan metabolism in trehalose 6-phosphate was the highest, and the accumulation of trehalose 6-phosphate content may mainly depend on the key enzyme genes of fructan metabolism rather than the enzyme genes in its own synthesis pathway. This study not only obtained the key genes of fructan metabolism in garlic seedlings responding to low temperatures but also preliminarily analyzed its regulatory mechanism, providing an important theoretical basis for further elucidating the cold resistance mechanism of garlic fructan metabolism. [ABSTRACT FROM AUTHOR]

Drought negatively affects plants by altering morphological, physiological and metabolic processes and ultimately reducing yields. Garlic (Allium sativum L.), an important member of the Alliaceae family, is also sensitive to drought and maximizing the yield of garlic bulbs is largely dependent on water availability. The objective of this study was to determine the effects of drought stress on morphological and physiological characteristics, as well as on phenolic, sugar, inulin and free amino acid content and antioxidant activity in two Croatian garlic ecotypes, 'Istarski crveni' (IC) and Istarski bijeli (IB). Drought was induced by using polyethylene glycol 8000 (PEG) solution (−0.6 MPa) starting 21 days after clove planting and lasted for 20 days. Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment. Among the physiological parameters, significant differences were observed between the two ecotypes studied in the spectral characteristics of the leaves, namely reflection in red, green and blue, VAL, values of the vegetation indices related to the chlorophyll content (CHI, GI), and the anthocyanin content (ARI). Ecotype IC showed higher antioxidant activity in the control treatment due to higher total phenolic content (TPC), but under drought conditions higher DPPH radical scavenging activity was determined in ecotype IB and higher values of FRAP in IC. Sucrose and glucose generally decreased under drought, while inulin increased in IB but decreased in IC. Total free amino acid content increased under drought in both ecotypes. In conclusion, drought tolerance of IB might be associated with increased accumulation of inulin and higher levels of amino acids, especially those shown to contribute to drought resistance. In IC, drought tolerance is associated with an increase in some amino acid compounds and better root growth in depth, probably due to a more efficient translocation of sucrose to the underground part of the plant. [ABSTRACT FROM AUTHOR]

Abstract Background The war against malaria in Africa especially Sub-Saharan Africa seems to be unending despite all efforts being invested on it for some decades. Mosquitoes have remained key transmitters of malaria. This study evaluated the larvicidal potentials of ethanolic leaf extracts of Cymbopogon citratus, Ricinus communis and Allium sativum on the fourth instar larvae of Anopheles mosquito. Results Cymbopogon citratus had the highest mortality of 78% (312) out of 400 larvae used in all the varied concentrations (100, 200, 300, 400 and 500 mg/l), and had the least LC50 value of 54.08 mg/l. Ricinus communis and Allium sativum had mortalities of 59.75% (239) and 73.75% (295) with LC50 of 141.25 mg/l and 81.096 mg/l, respectively. There was no mortality in the control. Temperature, pH and conductivity correlated positively with mortality (p 0.05). Conclusions Ethanolic leaf extracts of Cymbopogon citratus, A. sativum and R. communis have larvicidal properties. However, C. citratus was most effective followed by A. sativum while R. communis was the least effective. The extracts of these plants can serve as replacements to synthetic insecticides because they are bio-degradable, ecologically friendly, safe for non-target organisms and do not lead to an aftermath problem and still have properties that can reduce pest populations.

Background and aim: Garlic essential oil (GEO) isolated from Garlic (Allium sativum L.) exerts biological activities in disease prevention, particularly in metabolic and liver diseases, and is used for a dietary therapy for centuries. However, due to the side effects associated with the excessive consumption of GEO, there is a need to evaluate the safety of the GEO. Experimental procedure: Ames test using five Salmonella typhimurium strains (TA98, TA100, TA102, TA1535, and TA1537) and Chinese hamster ovary (CHO–K1) cells with or without metabolic activation (S9 system), and mammalian erythrocyte micronucleus test were used to assess the genotoxicity and clastogenic effects of GEO. A repeated dose of GEO (15, 25, and 50 mg/kg body weight, p.o.) were administrated to ICR mice for 28 days to ascertain the subacute toxicity of GEO. Results and conclusions: The results of the Ames test with or without S9 system indicated that GEO did not induce mutagenicity nor have clastogenic effects in CHO–K1 cells with or without S9 activation. Furthermore, GEO did not affect the ratio of immature to total erythrocytes or the number of micronuclei in immature erythrocytes of ICR mice after 24 and 48 h. In a 28-day oral toxicity assessment, GEO (15, 25, and 50 mg/kg body weight, p.o.)-fed ICR mice exhibited normal behaviors, mortality, body weight, daily intake, hematology, clinical biochemistry, and organ weight. GEO shows no genotoxicity, and the no-observed-adverse-effect level (NOAEL) for GEO is considered to be greater than 50 mg/kg bw/day orally for 28 days in mice.

Proteins of the SWEET (Sugar Will Eventually be Exported Transporters) family play an important role in plant development, adaptation, and stress response by functioning as transmembrane uniporters of soluble sugars. However, the information on the SWEET family in the plants of the Allium genus, which includes many crop species, is lacking. In this study, we performed a genome-wide analysis of garlic (Allium sativum L.) and identified 27 genes putatively encoding clade I–IV SWEET proteins. The promoters of the A. sativum (As) SWEET genes contained hormone- and stress-sensitive elements associated with plant response to phytopathogens. AsSWEET genes had distinct expression patterns in garlic organs. The expression levels and dynamics of clade III AsSWEET3, AsSWEET9, and AsSWEET11 genes significantly differed between Fusarium-resistant and -susceptible garlic cultivars subjected to F. proliferatum infection, suggesting the role of these genes in the garlic defense against the pathogen. Our results provide insights into the role of SWEET sugar uniporters in A. sativum and may be useful for breeding Fusarium-resistant Allium cultivars. [ABSTRACT FROM AUTHOR]

Cryopreservation features of Lithuanian garlic (Allium sativum L.) cultivars 'Žiemiai' and 'Dangiai' were investigated. The survival rate and state of explants, depending on the type of explant, and dehydration conditions were evaluated in the experiment. Explants isolated from cloves and bulbils were dehydrated with a plant vitrification solution 3 (PVS 3) containing 50% w/v glycerol and 50% w/v sucrose in liquid MS medium. Three different exposure durations of 1.5, 2, and 3 h in PVS3 solution were applied at 0 °C. Unloaded stem domes were planted in Petri dishes with MS medium supplemented with 1 mg L−1 naphthaleneacetic acid (NAA) and 6–dimethylallylamino purine (2-iP) on 0.8% plant agar. The obtained results showed that the cryopreservation in liquid nitrogen reduced the survival rate of explants by 20–40%. The average number of surviving explants after freezing reached 64.3% for both cultivars. Cultivar 'Žiemiai' showed a 24% higher capability for survival than 'Dangiai'. The total number of surviving explants of 'Žiemiai' reached 76.1%. Explants from bulbils were 23% more effective for cryopreservation compared to cloves. Evaluation of the effect of dehydration duration showed that the survival rate of the explants from bulbils of both cultivars was highest after treatment with PVS3 for 3 h and reached 91%. Treatment in PVS3 solution for 2 h was sufficient for survival of explants from cloves. Obtained results confirm that the efficiency of garlic cryopreservation depends on complex factors. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: In this study, a new high performance liquid chromatographic method was developed to determine the amount of allicin (AL) and s-allyl cysteine (SAC) in Allium sativum L. extracts. Methods: In the method, C18 column (5 µm x4.6 mm x150 mm) was used as the stationary phase at 25 °C and acetonitrile: water (70:30, v/v) mixture was used as mobile phase with 1 mL/min flow rate. Isocratic elution was applied. The injection volume was 20 µL. Measurements were carried out at 254 nm with ultraviolet detection. Retention times for AL and SAC were 1.1 and 2.4 min, respectively. The method was validated according to International Conference on Harmonization criteria. Results: The limit of detection values for AL and SAC were 0.6 µg/mL and 1.5 µg/mL, respectively. The limit of quantitation values for AL and SAC were 2 µg/mL and 5 µg/mL, respectively. The linearity of the method was between 2-100 µg/mL and 5-30 µg/mL for AL and s-allyl cysteine, respectively. The developed method was also validated and applied to three different trade extracts. Conclusion: This new method, which is quite fast, simple and economical, can be used in the analysis of Allium sativum L. extracts, which are named as black garlic in the contents of food supplements. [ABSTRACT FROM AUTHOR]

Ever since ancient times, Allium species have played a significant role in the human diet, in traditional medicine for the treatment of many ailments, and in officinal medicine as a supplemental ingredient. The major metabolites of alliums, as well as their antioxidant and antimicrobial properties, with an emphasis on the species most represented in the Balkan region, are discussed in this review. Due to its richness in endemic species, the Balkan region is considered the genocenter of alliums. There are 56 recorded Allium species in the Balkans, and 17 of them are endemic. The most common and well-studied Allium species in the Balkans are A. cepa (onion), A. sativum (garlic), A. ampeloprasum (leek), A. schoenoprasum (chives), A. fistulosum (Welsh onion), and A. ursinum (wild garlic or bear's garlic), which are known for their pungent taste and smell, especially noticeable in garlic and onion, and attributed to various organosulfur compounds. These plants are valued for their macronutrients and are used as desirable vegetables and spices. Additionally, phytochemicals such as organosulfur compounds, phenolics, fatty acids, and saponins are associated with the antioxidant and antimicrobial properties of these species, among many other bioactivities. All parts of the plant including the bulb, peel, clove, leaf, pseudostem, root, flower, and seed exhibit antioxidant properties in different in vitro assays. The characteristic phytocompounds that contribute to the antimicrobial activity of alliums include allicin, ajoene, allyl alcohol, and some diallyl sulfides. Nanoparticles synthesized using Allium species are also recognized for their notable antimicrobial properties. [ABSTRACT FROM AUTHOR]

Garlic (Allium sativum L.) is a clonally propagated bulbous crop and can be infected by several viruses under field conditions. A virus complex reduces garlic yield and deteriorates the quality of the produce. In the present study, we aimed to eliminate Onion yellow dwarf virus (OYDV), Garlic common latent virus (GCLV), Shallot latent virus (SLV), and Allexiviruses from the infected crop using combination of meristem culture, thermotherapy, and chemotherapy. In this study, seven different treatments, namely shoot meristem culture, thermotherapy direct culture, chemotherapy direct culture, chemotherapy + meristem culture, thermotherapy + meristem culture, thermotherapy + chemotherapy direct culture, and thermotherapy + chemotherapy + meristem culture (TCMC), were used. Multiplex polymerase chain reaction (PCR) was employed to detect virus elimination, which revealed the percentage of virus-free plants was between 65 and 100%, 55 and 100%, and 13 and 100% in the case of GCLV, SLV, and OYDV, respectively. The in vitro regeneration efficiency was between 66.06 and 98.98%. However, the elimination of Allexiviruses could not be achieved. TCMC was the most effective treatment for eliminating GCLV, SLV, and OYDV from garlic, with 66.06% plant regeneration efficiency. The viral titre of the Allexivirus under all the treatments was monitored using real-time PCR, and the lowest viral load was observed in the TCMC treatment. The present study is the first to report the complete removal of GCLV, SLV, and OYDV from Indian red garlic with the application of thermotherapy coupled with chemotherapy and shoot meristem culture. [ABSTRACT FROM AUTHOR]

Hepatocellular carcinoma is the seventh most common type of cancer in the world, with limited treatment options. A promising strategy to treat cancer is to associate chemotherapeutics and plant bioactive compounds. Here, we examined whether diallyl disulfide (DADS; 50–200 μM) and sorafenib (SORA; 8 μM), either alone or in combination, were toxic to hepatocellular carcinoma cells (HepG2) in vitro. We assessed whether DADS and/or SORA induced cell death (LIVE/DEAD assay and autophagy) and cell cycle changes (flow cytometry), altered expression of key genes and proteins (RT-qPCR and Western blot), and modulated tumorigenesis signatures, such as proliferation (clonogenic assay), migration (wound healing), and invasion (inserts). The DADS + SORA combination elicited autophagic cell death by upregulating LC3 and NRF2 expression and downregulating FOS and TNF expression; induced the accumulation of cells in the G1 phase which thereby upregulated the CHEK2 expression; and inhibited invasion by downregulating the MMP2 expression. Predictive analysis indicated the participation of the MAPK pathway in the reported results. The DADS + SORA combination suppressed both cell invasion and clonogenic survival, which indicated that it dampened tumor growth, proliferation, invasion, and metastatic potential. Therefore, the DADS + SORA combination is a promising therapy to develop new clinical protocols. [ABSTRACT FROM AUTHOR]

Background: The war against malaria in Africa especially Sub-Saharan Africa seems to be unending despite all efforts being invested on it for some decades. Mosquitoes have remained key transmitters of malaria. This study evaluated the larvicidal potentials of ethanolic leaf extracts of Cymbopogon citratus, Ricinus communis and Allium sativum on the fourth instar larvae of Anopheles mosquito. Results: Cymbopogon citratus had the highest mortality of 78% (312) out of 400 larvae used in all the varied concentrations (100, 200, 300, 400 and 500 mg/l), and had the least LC50 value of 54.08 mg/l. Ricinus communis and Allium sativum had mortalities of 59.75% (239) and 73.75% (295) with LC50 of 141.25 mg/l and 81.096 mg/l, respectively. There was no mortality in the control. Temperature, pH and conductivity correlated positively with mortality (p < 0.05) while dissolved oxygen and total dissolved solids did not positively correlate with mortality (p > 0.05). Conclusions: Ethanolic leaf extracts of Cymbopogon citratus, A. sativum and R. communis have larvicidal properties. However, C. citratus was most effective followed by A. sativum while R. communis was the least effective. The extracts of these plants can serve as replacements to synthetic insecticides because they are bio-degradable, ecologically friendly, safe for non-target organisms and do not lead to an aftermath problem and still have properties that can reduce pest populations. [ABSTRACT FROM AUTHOR]

To investigate the effects of zinc, boron, and sulfur on the quantitative characteristics, elements uptake, and allicin content in Ziabar local garlic (Allium sativum L.), an experiment was conducted as a completely randomized block design with three replications in 2019-20. The treatments included 1- control (without fertilizer use), 2- Zn, 3- B, 4- S, 5- Zn+S, 6- Zn+B, 7- B+S, and 8- S+B+Zn. Sulfur, zinc, and boron fertilizers were added to the soil as sulfur flower (100 kg ha-1), ZnSO4·7H2O (20 kg ha-1), and H3BO3 (5 kg ha-1) at two vegetative growth and bulb filling stages. The results showed that the S+B+Zn treatment was significantly superior to other treatments in all studied traits. Among the single fertilizer treatments, the highest economic yield and boron uptake rate was observed with the B application. The S application resulted in the highest S uptake. The highest Zn uptake and allicin content was observed in the Zn application treatment. Among the dual treatments, the B+S treatment caused the highest economic yield and S and B uptake rate. The Zn+B treatment showed the highest Zn uptake. The highest allicin content (29%) was observed in the S+B+Zn treatment. The highest garlic economic yield (3000 kg ha-1) and the best quality in terms of allicin content (29%), S uptake (0.73 kg ha-1), Zn uptake (39.6 kg ha-1), and B uptake (12.96 kg ha-1) were obtained in the S+B+Zn treatment. According to the present results, the use of zinc, boron, and sulfur fertilizers along with basal fertilizers could be recommended to increase the quantitative and qualitative yield of garlic. [ABSTRACT FROM AUTHOR]

Soil salinity has been an increasing problem worldwide endangering crop production and human food security. It is an ideal strategy to excavate stress resistant genes and develop salt tolerant crops. NAC (no apical meristem/Arabidopsis transcription activation factor/cup-shaped cotyledon) transcription factors have been demonstrated to be involved in salt stress response. However, relevant studies have not been observed in garlic, an important vegetable consumed in the world. In this study, a total of 46 AsNAC genes encoding NAC proteins were identified in garlic plant by transcriptome data. Phylogenetic analysis showed that the examined AsNAC proteins were clustered into 14 subgroups. Motif discovery revealed that the conserved domain region was mainly composed of five conserved subdomains. Most of the genes selected could be induced by salt stress in different tissues, indicating a potential role in salt stress response. Further studies may focus on the molecular mechanisms of the AsNAC genes in salt stress response. The results of the current work provided valuable resources for researchers aimed at developing salt tolerant crops. [ABSTRACT FROM AUTHOR]

[Display omitted] • AgNPs were characterized using XRD, TEM, UV–Vis, and FE-SEM. • To examine the antioxidant characteristics of AgNPs, the DPPH assay was employed with BHT serving as the positive control. • The HOS revealed the most effective outcome regarding anti-human bone tumor efficacies when treated with AgNPs. Several studies have recently uncovered the ability of plants to enhance the therapeutic efficacies of Ag NPs on various carcinoma cells, particularly those associated with human bone tumors. Developing and formulating novel chemotherapy supplements or medications for the management of bone tumors in humans is a top research focus for both developing and developed nations. Our current study involved the development of a contemporary chemotherapeutic medication utilizing silver nanoparticles (AgNPs) combined with an aqueous extract of Allium sativum L. for the purpose of treating bone tumors in humans. AgNPs were characterized using XRD, TEM, UV–Vis, and FE-SEM. The peaks detected at 2θ values of 77.4, 65.1, and 37.8 were associated with the crystal planes 311, 220, and 111, respectively. To examine the antioxidant characteristics of AgNPs, the DPPH assay was employed with BHT serving as the positive control. The MTT assay was employed to examine the anti-human bone tumor and cytotoxicity properties of AgNPs on bone cancer cells, including A-673 and HS-729 (rhabdomyosarcoma), MHH-ES1 and CADO-ES1 (Ewing's sarcoma), MG-63 and HOS (osteosarcoma), as well as CH-3573 and SW-1353 (chondrosarcoma). The DPPH assay demonstrated comparable antioxidant capacities among AgNPs, and butylated hydroxytoluene. The anti-human bone tumor properties and cell viability of silver nanoparticles exhibited a dose-dependent decrease against CH-3573, SW-1353, MG-63, HOS, MHH-ES1, CADO-ES1, HS-729, and A-673 cells, while showing no cytotoxic effects on the normal cell line. The viability of the cells and their response to the nanoparticles varied based on the dosage administered. The silver nanoparticles exhibited IC 50 values of 154, 67, 129, 110, 124, 107, 70, and 81 µg/ml against H-3573, SW-1353, MG-63, HOS, MHH-ES1, CADO-ES1, HS-729, and A-673 cell lines, respectively. The HOS revealed the most effective outcome regarding anti-human bone tumor efficacies when treated with AgNPs, surpassing the results observed in other cell lines. Based on the aforementioned results, it is possible to utilize the silver nanoparticles with A. sativum extract for the management of various human bone tumors, particularly human bone rhabdomyosarcoma, human bone chondrosarcoma, human bone osteosarcoma, and human bone Ewing's sarcoma. [ABSTRACT FROM AUTHOR]

Drought has become a serious environmental factor that affects the growth and yield of plants. Fructan, as an important storage compound in garlic, plays an important role in drought tolerance. Genomic changes in plants under drought stress clarify the molecular mechanism of plants’ responses to stress. Therefore, we used RNA-seq to determine the transcriptomic changes in garlic under drought stress and identified the key module related to fructan metabolism by weighted gene co-expression network analysis. We conducted a comprehensive analysis of the garlic transcriptome under drought stress over a time course (0, 3, 6, 9, 12, 15 d). Drought significantly induces changes in gene expression. The number of specifically expressed genes were 1430 (3 d), 399 (6 d), 313 (9 d), 351 (12 d), and 1882 (15 d), and only 114 genes responded at each time point. The number of upregulated DEGs was higher than the number of downregulated DEGs. Gene ontology and a Kyoto Encyclopedia of Genes and Genomes analysis showed that garlic was more likely to cause changes in carbohydrate metabolism pathways under drought stress. Fructan content measurements showed that drought stress significantly induced fructan accumulation in garlic. To determine whether there were modules involved in the transcriptional regulation of fructan content in garlic, we further analyzed the genes related to fructan metabolism using WGCNA. They were enriched in two modules, with F-box protein and GADPH as hub genes, which are involved in garlic fructan metabolism in response to drought stress. These results provide important insights for the future research and cultivation of drought-tolerant garlic varieties.

Garlic is commonly used as vegetable or spice and as a herb in folklore as well as traditional medicine in many countries. The current study aimed to compare the chemical composition, antioxidant activity, and the content of selected polyphenolic compounds in cloves as well as leaves of winter garlic plants of the Harnaś and Ornak cultivars, which are of Polish origin. Garlic was grown from cloves for three years (2018–2020) in the experimental field of the University of Agriculture in Krakow, Poland. The research material was harvested on three dates: May; June, unripe garlic plants; and in July, the plant at full maturity. The content of vitamin C in the fresh material was determined. The proximate analysis was determined in the freeze-dried plants of garlic, and the total carbohydrate content was calculated. The antioxidant activity and the content of selected polyphenolic compounds were also determined. Garlic cloves showed a higher content of dry matter, and total carbohydrates than the leaves of garlic plants. On the other hand, in the leaves, a significantly higher content of protein, total fat and ash were observed. Additionally, garlic leaves were characterised by a higher content of vitamin C, total polyphenols, and a higher antioxidant activity than garlic cloves. The leaves of young garlic plants from the May harvest were distinguished by a higher content of these compounds. The dominant phenolic compounds were catechin and epicatechin. The leaves of young plants can be a valuable source of bioactive substances, especially in early spring.

Garlic (Allium sativum L.) is an aromatic herb known for its culinary and medicinal uses for centuries. Both unprocessed (white) and processed (black) garlic are known to protect against the pathobiology of neurological disorders such as Alzheimer’s disease (AD) and Parkinson’s disease (PD), which has been attributed to their anti-inflammatory and antioxidant properties. The information on the effects of processed and unprocessed garlic on neuronal process outgrowth, maturation, and synaptic development is limited. This study aimed at investigating and comparing the effects of the ethanol extracts of unprocessed (white garlic extract, WGE) and processed (black garlic extract, BGE) garlic on the maturation of primary hippocampal neurons. Neurite outgrowth was stimulated in a dose-dependent manner by both WGE and BGE and the most effective doses were 15 μg/mL and 60 μg/mL, respectively, without showing cytotoxicity. At this optimal concentration, both extracts promoted axonal and dendritic growth and maturation. Furthermore, both extracts substantially increased the formation of functional synapses. However, the effect of WGE was more robust at every developmental stage of neurons. In addition, the gas chromatography and mass spectrometry (GC-MS) analysis revealed a chemical profile of various bioactives in both BGE and WGE. Linalool, a compound that was found in both extracts, has shown neurite outgrowth-promoting activity in neuronal cultures, suggesting that the neurotrophic activity of garlic extracts is attributed, at least in part, to this compound. By using network pharmacology, linalool’s role in neuronal development can also be observed through its modulatory effect on the signaling molecules of neurotrophic signaling pathways such as glycogen synthase kinase 3 (GSK3β), extracellular signal-regulated protein kinase (Erk1/2), which was further verified by immunocytochemistry. Overall, these findings provide information on the molecular mechanism of processed and unprocessed garlic for neuronal growth, survival, and memory function which may have the potential for the prevention of several neurological disorders.

Garlic (Allium sativum L.) is an herbaceous plant and is recognised for its numerous medicinal and culinary properties, and it is used in diverse food preparations for its characteristic flavour and aroma. High alliin content increases the formation of allicin, a bioactive compound of garlic. Therefore, this research aimed to compare different extraction methods for garlic (Allium sativum L.) between subcritical water extraction (SWE) and Soxhlet extraction to obtain a high extraction yield and alliin content. The SWE conditions were 120 °C and 180 °C temperatures and 2 mL/min and 6 mL/min flow rates at a constant pressure of 15 MPa for a 10 min extraction time, respectively. In the meanwhile, the extraction time for Soxhlet extraction with various solvents, namely, distilled water, ethanol–water (1:1), and 100% ethanol, was two hours. High-performance liquid chromatography (HPLC) was used to analyse alliin. Soxhlet extraction had the best yield (1.96 g) using ethanol–water (1:1) as the solvent in comparison to SWE extraction (1.28 g) at 180 °C and 6 mL/min. In contrast, SWE yielded a greater concentration of alliin (136.82 mg/g) at 120 °C and 2 mL/min than the Soxhlet method when using distilled water as the solvent (65.18 mg/g). Therefore, SWE may replace Soxhlet extraction as the conventional method for extracting alliin from garlic at a high concentration, and SWE has advantages that favour garlic extracts. [ABSTRACT FROM AUTHOR]