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Galangal (Alpinia galanga (L.) Willd) and bitter ginger (Zingiber zerumbet (L.) Roscoe) are aromatic rhizomatous plants that are typically used for culinary purposes. These rhizomatous plants have many biological properties and the potential to be beneficial for pharmaceutics. In this study, we evaluated the antioxidant and antimicrobial activities, with a specific focus on acne-causing bacteria, as well as the phytochemical constituents, of different parts of galangal and bitter ginger. The rhizomes, stems, and leaves of galangal and bitter ginger were separately dried for absolute ethanol and methanol extractions. The extracts were used to evaluate the antioxidant activity using a DPPH radical scavenging assay (0.005–5000 μg/mL), antimicrobial activity against acne-causing bacteria (0.50–31.68 mg/mL), and in vitro cytotoxicity toward human keratinocytes and fibroblasts (62.5–1000 μg/mL), as well as analyses of bioactive phytochemicals via GC-MS and LC-MS/MS (500 ppm). The ethanol and methanol extracts of bitter ginger and galangal's rhizomes (BRhE, BRhM, GRhE, and GRhM), stems (BStE, BStM, GRhE, and GRhM), and leaves (BLeE, BLeM, GLeE, and GLeM), respectively, showed antioxidant and antimicrobial activities. The extracts of all parts of bitter ginger and galangal were greatly antioxidative with 0.06–1.42 mg/mL for the IC50 values, while most of the extracts were strongly antimicrobial against C. acnes DMST 14916, particularly BRhM, BRhE, GRhM, and GRhE (MICs: 3.96–7.92 mg/mL). These rhizome extracts had also antimicrobial activities against S. aureus TISTR 746 (MICs: 7.92–31.68 mg/mL) and S. epidermidis TISTR 518 (MICs: 7.92–15.84 mg/mL). The extracts of bitter ginger and galangal rhizomes were not toxic to HaCaT and MRC-5 even at the highest concentrations. Through GC-MS and LC-MS/MS analysis, phytochemicals in bitter ginger rhizome extracts, including zerumbone, tectorigenin, piperic acid, demethoxycurcumin, and cirsimaritin, and galangal rhizome extracts, including sweroside and neobavaisoflavone, were expected to provide the antioxidant and anti-microbial activities. Therefore, the results suggest that the bitter ginger and galangal extracts could be natural anti-acne compounds with potential for pharmaceutic, cosmetic, and aesthetic applications. [ABSTRACT FROM AUTHOR]

Background: Oral thrush, caused by Candida albicans, is currently treated under guidelines by using topical antifungal pharmaceutical formulations such as lozenges and liquid gargles. Using these drugs may cause irritation and adverse reactions. Moreover, there is a short exposure time to reach the lesion, which may result in low effectiveness of the treatment. Therefore, the research group aimed to develop mouthwash solutions that can form gel at oral temperature containing Zingiber zerumbet rhizome extracts, which work as an active substance inhibiting fungi. Methods: The development process began with the extraction of substances from Zingiber zerumbet rhizome using hexane and the analysis of the active substance by HPLC. Antifungal and anti-inflammatory activities of the extracts were evaluated. Hydrogel mouthwash was prepared by varying the type and concentration of polymer, solvent, and mucoadhesive agent. The optimized formulation was then evaluated for its properties. Results: Zingiber zerumbet rhizome extracts, containing 16.29±0.39 % zerumbone, demonstrated both antifungal and anti-inflammatory activities against Candida albicans. The extract also had anti-inflammatory activity when tested by the proteinase inhibitory test, with a percentage inhibition of 86.15±10.96 %. Two thermosensitive hydrogels, poloxamer P407 and P188, were applied and compared as gel-forming agents. It was found that the optimized formulation is composed of 15 % (w/w) poloxamer P407, 0.05 % (w/w) carbopol as a mucoadhesive agent, and 5 % (v/v) ethanol. Transition time and transition temperature of the optimized thermosensitive hydrogel formula were 27.76±1.25 s and 36±1.00 °C, respectively. The viscosity at shear rate 1 S-1 and 25 °C of the optimized formulation was 0.13±0.06 Pa.s, which is suitable for pouring out of the bottle and gargling. Conclusion: This study demonstrates a novel approach to developing thermosensitive hydrogel mouthwash formulations, leveraging Zingiber zerumbet rhizome extracts for enhanced therapeutic efficacy against oral candidiasis. These formulations offer prolonged contact time with affected areas, potentially improving treatment outcome.

Zingiber zerumbet Sm. (Family: Zingiberaceae) is an important perennial medicinal oil-bearing herb that is native to the Southeast Asia. This study examines the impact of different durations of post-harvest shade drying (ranging from 1 to 12 months) on essential oil yield and chemical composition of Z. zerumbet, in comparison to the freshly collected oil sample. This study explores how post-harvest shade drying impact the composition and longevity of Z. zerumbet rhizomes as well as its antimicrobial, antibiofilm activity. The oils were analyzed for their chemical composition analysis using a gas chromatography-flame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC–MS). The post-harvest periods of drying (1–12 months) were discovered to enhance the concentration of marker constituents in the oil. The primary constituent, Zerumbone, was detected in concentrations ranging from 69.38 ± 5.63% to a maximum of 80.19 ± 1.53% as the drying duration of the rhizome was extended. The output of the essential oil was not significantly affected by drying times; however, it did have a noticeable impact on the proportions of monoterpenes. Both disc diffusion and broth microdilution assay were used in freshly collected Z. zerumbet oil for its antimicrobial potential against S. aureus, L. monocytogens, S. hominis, Salmonella enterica serovar Typhimurium, P. aeruginosa, S. intermedius, E. coli, and C. albicans. For the first time, the oil reported to exhibit antibiofilm activity against S. aureus which was validated using fluorescence microscopy, and effectively disrupts the biofilm by 47.38% revealing that essential oil was able to disintegrate the clusters of the pathogen. Z. zerumbet rhizome oil is effective to reduce food-borne microorganisms. Therefore, its essential oil, a natural source of bioactive zerumbone, may improve flavor, aroma, and preservation. [ABSTRACT FROM AUTHOR]

Introduction: Zerumbone is a natural compound found in bitter ginger plants (Zingiber zerumbet) that shows antiproliferative, antioxidant, anti-inflammatory, and analgesic properties. We aimed to investigate the role of zerumbone in improving the quality of life and symptom control in cancer patients with no treatment options. Methods: We conducted a pilot, non-randomized, single-center, open prospective, and systematic study on the use of 400 mg of zerumbone twice a day. Results: The study included 35 patients (mean age, 68 years; 64% men), of which 16 completed the eight-week study. The intention-to-treat population showed no significant changes in weight or sleep quality over the eight-week study. Assessments performed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) showed significant improvements in the quality of life in the global (p = 0.072), activity (p = 0.0393), social (p = 0.0001), and emotional (p = 0.0023) dimensions. The Hospital Anxiety and Depression Scale (HADS) questionnaire scores showed significant improvement in anxiety (p = 0.032) and depression (p = 0.021), while the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) questionnaire scores also indicated a significant improvement (p = 0.001). Bitter ginger showed low toxicity. Conclusions: Bitter ginger showed promising results in improving the quality of life and reducing symptoms of anxiety and depression in the study population. A randomized placebo-controlled study is necessary to confirm these results.This trial was registered under the number FMABC: CAAE – 93459418.00000082, at ISRCTN (BIOMED CENTRAL) NUMBER 4388 (03/07/23) and at Plataforma Brasil (https://plataformabrasil.saude.gov.br/login.jsf)

Zingiber zerumbet affords the essential oil having important application and its rhizomes are the main ingredient in traditional Indian Ayurveda formulation. We report here the impact of enzymes on the isolable yield of oleoresin and essential oil (EO) from Zingiber zerumbet. The impact of enzymes like cellulase, amylase, bio-protease, pectinase, hemi-cellulase and enzyme for herbal extract is evaluated. Viscozyme affords the highest oleoresin (16%) and essential oil (7.1%), a betterment of 138% and 24% respectively. Zerumbone, a principal bioactive component of zerumbet, was afforded in 8.98% and 5.7% from oleoresin and essential oil. Box Behnken Design has been employed to optimize parameters to get the highest oleoresin and EO yield. The EO was tested for its inhibitory activity on α -amylase and α-glucosidase. The EO collected from viscozyme-assisted extraction inhibited α -amylase with IC 50 26 µM while the same from enzyme for herbal extract-assisted extraction inhibited α -glucosidase with IC 50 274 µM. The extraction efficiency of all the enzymes used here is reported. [Display omitted] • Viscozyme treated zerumbet affords high oleoresin & essential oil. • Zerumbone from oleoresin & essential oil was respectively 7.5% & 5.7%. • Zerumbet essential oil showed potent α -amylase and α -glucosidase inhibition. • Optimized the extraction method by RSM. • Quantified zerumbone by Gas Chromatography (GC). [ABSTRACT FROM AUTHOR]

We assayed skin hydration and anti-inflammatory efficacies of zerumbone (Zer, 2.5–10 μM), a natural sesquiterpene of Zingiber zerumbet, using non– or UVB (30 mJ/cm2)-irradiated keratinocytes (HaCaT). & Zer increased cell viability, upregulated hyaluronic acid, and inhibited ROS generation in UVB-irradiated HaCaT cells. Zer promoted antioxidant Nrf2 nuclear translocation resulting in HO-1 and γ-GCLC expression. Zer promotes skin hyaluronic acid by increasing protein and mRNA expression of HAS-2 and AQP-3 in non– or UVB-irradiated HaCaT cells. Furthermore, Zer increased Src and ERK phosphorylation. Src silencing or ERK inhibitor (PD98059) diminished Zer-mediated skin hydration, as evidenced by decreased HAS-2 and AQP-3 expression. Interestingly, UVB-induced Src/ERK inhibition was reversed by Zer or N-acetylcysteine. Additionally, Zer inhibited inflammatory iNOS, COX-2, and IL-1β expression through NFκB (p65) and AP-1 (c-Jun/c-Fos) pathway in UVB-irradiated HaCaT cells. HaCaT cells treated with Zer enhanced the growth factors PDGF-A, VEGF, and EGFR expressions. Zerumbone might be utilized in cosmetic formulations.

Shampoo ginger (Zingiber zerumbet) is a multipurpose ginger that has confirmed their role as food, medicine, and for decorative purposes. The rhizome possesses zerumbone, curcuminoids, and other bioactive molecules that play crucial roles in treating several human diseases. To date, several reports are existing on the in vitro biotechnology of Z. zerumbet. The present review highlights the consolidated clarification and comprehensive explanation of in vitro biotechnological implications based on plant tissue culture for the improvement of Z. zerumbet. Studies on biotechnological involvement in shampoo ginger were primarily emphasized in the study of the last 3 decades, for instance, in vitro regeneration, micro-rhizome production, callus culture, somatic embryogenesis, ex vitro establishment, and molecular assessment of in vitro-raised clones. Moreover, this review provides insights into different in vitro culture systems and endophytes involvement in the production of secondary metabolites. This review will assist for advanced research areas related to in vitro manipulation of shampoo ginger, especially for the commercial cultivation of secondary metabolites rich clones of Z. zerumbet. Moreover, it will provide an insight into crop upgrading and breeding programs of this underutilized, aromatic, and medicinal plant for amended yield and quality. Key points: • Z. zerumbet is an aromatic spice and an ornamental • This review comprehensively assesses Z. zerumbet tissue culture • Key shortcomings and future directions of Z. zerumbet biotechnology [ABSTRACT FROM AUTHOR]

The Nucleotide-binding site domain (NBD) of plant resistance (R) genes plays a vital role during plant defense signaling. The functional significance of CC-NBS-LRR (Coiled coil-NBS-Leucine Rich Repeat) class of R gene designated ZzR1, characterized from Zingiber zerumbet in earlier studies, was determined by molecular modeling and docking studies. Docked complex showed the ligand GTP interacts with amino acid residues in the cleft made by GLPL and P-loop motifs of the NBD. Heterologous expression of ZzR1 NBS protein was optimized using expression vectors, pEcoli-Nterm-6xHN and pET Directional TOPO and transformed in five Escherichia coli strains namely DH5α, TOP10, BL21DE3, BL21DE3 star and BL21plysS cells. The NBS protein of 36 kDa molecular size was expressed in E. coli BL21DE3 strain using pET TOPO vector. Optimum induction was detected at 30 °C using isopropyl-1-thio-β-D-galactopyranoside (IPTG) (1 mM). The present study provides valuable information on ligand interactions and heterologous expression of ZzR1 NBD protein. [ABSTRACT FROM AUTHOR]

Antagonistic endophytes previously isolated from the wild ginger congener, Zingiber zerumbet (L.) Smith were evaluated in the present study towards identifying candidate biocontrol agents (BCAs) for control of soft-rot disease caused by Pythium myriotylum. Bacillus isolates designated ZzER11 (B. amyloliquefaciens) and ZzER62 (B. subtilis), showing significant inhibition (> 80%) of P. myriotylum were characterized for production of lipopeptide (LP) biosurfactant. PCR screening for LP biosynthetic genes and MALDI-TOF–MS analyses revealed the production of surfactin, iturin and fengmycin (1010–1550 m/z range) classes of LPs by the selected Bacillus spp. Microscopic examination of P. myriotylum hyphae following confrontation experiments with ZzER11 and ZzER62 showed morphological distortions to mycelia including hyphal shrinkage and plasmolysis. Absolute inhibition of P. myriotylum hyphal growth was observed in presence of ZzER11 and ZzER62 LP extracts following disc diffusion assays. Biocontrol potential of ZzER11 and ZzER62 against the soft-rot disease was confirmed by priming ginger rhizomes with the endophytes. Results revealed effective control of soft-rot disease in endophyte-primed ginger rhizome even at high P. myriotylum zoospore concentration (104 zoospores/ g soil) with sprouts emerging after 30 days of infection (doi) and forming healthy plantlets. The selected antagonistic endophytic isolates from Z. zerumbet thus offer a solution for imparting resistance to ginger cultivars through microbiome manipulation. [ABSTRACT FROM AUTHOR]

Biosynthetic potential of fungal endophytes from medicinal plants represents an attractive source for discovery of new bioactive metabolites. Present study involved characterizing metabolite(s) of non-pathogenic, endophytic Fusarium oxysporum designated ZzEF8 which was identified previously from Zingiber zerumbet rhizome to display antagonism towards Pythium myriotylum [62.2 ± 2.58% percent of inhibition (PoI)], an oomycetous phytopathogen of significant economic concern. Efficacy of ZzEF8 in suppressing soft rot by P. myriotylum was further evaluated by planting ginger rhizomes primed with ZzEF8 conidial suspension (106 conidia/ ml) followed by transplanting the primed rhizome in sterile soil infested with P. myriotylum (103 zoospores/g soil). Batch fermentation followed by solvent extraction yielded a dark red solid (0.45 mg/ml) which after fractionation by silica column (500 × 30 mm) chromatography (100–200µ) using chloroform: methanol (8:2) solvent yielded three fractions, F1-3. Validation of inhibitory activity of the fractions by disc diffusion assay identified F2 to exhibit absolute P. myriotylum growth inhibition (100%) while F1 and F3 showed 57.62% and 10.73% inhibition respectively. Further purification of F2 by silica column chromatography (300 × 10 mm) yielded three sub-fractions viz., F2a-c. Further LC/Q –TOF MS-analysis of the three sub-fractions identified F2a to contain umbelliferone (tR 6.93 min) as major metabolite. Batch fermentation under submerged conditions was thence optimized for optimal metabolite production. Evaluation of cytotoxicity of F2a and F2b fractions in HeLa cell lines revealed F2a to display cytotoxic effect with IC50 value of 57.9 µg/ml. Anti-Pythium activity of ZzEF8 and anti-cancer activity of ZzEF8 metabolites identified in present experiments signifies its potential for use in pharmaceutical and agricultural industry. [ABSTRACT FROM AUTHOR]

Serine protease Inhibitors (SPIs) abundantly reported in plant storage organs constitute important candidate molecules for antimicrobial and anticancer therapeutics. Our earlier studies had identified antimicrobial protein/or peptides (AMP) from Zingiber zerumbet rhizomes designated ZzAMP inhibiting serine protease (SP) of necrotrophic phytopathogen, Pythium myriotylum. Considering the high ethno-medicinal applications of Z. zerumbet rhizomes, present study evaluated the anti-bacterial, anti-oxidant and cytotoxic properties of ZzAMP. Though ZzAMP displayed low radical scavenging activity (IC50 1000 µg/ml), it exhibited considerable anti-bacterial activity towards the nosocomial pathogen Klebsiella pneumonia (93%), which produced maximal extracellular protease (30.6 ± 1.47 U/ml) amongst the pathogens screened. Evaluation of cytotoxic activity of ZzAMP revealed decrease in viability of cancer cell line, HeLa (IC50 115.09 μg/ml) compared to normal cells, L929 (IC50 299.95 μg/ml). Present experiments showing antimicrobial and cytotoxic activities of ZzAMP with minimal damage to normal cells are indicative of its potential as a promising nutraceutical protein. [ABSTRACT FROM AUTHOR]

Abstract Background There has always been controversy over whether clonal plants have lower genetic diversity than plants that reproduce sexually. These conflicts could be attributed to the fact that few studies have taken into account the mating system of sexually reproducing plants and their phylogenetic distance. Moreover, most clonal plants in these previous studies regularly produce sexual progeny. Here, we describe a study examining the levels of genetic diversity and differentiation within and between local populations of fully clonal Zingiber zerumbet at a microgeographical scale and compare the results with data for the closely related selfing Z. corallinum and outcrossing Z. nudicarpum. Such studies could disentangle the phylogenetic and sexually reproducing effect on genetic variation of clonal plants, and thus contribute to an improved understanding in the clonally reproducing effects on genetic diversity and population structure. Results The results revealed that the level of local population genetic diversity of clonal Z. zerumbet was comparable to that of outcrossing Z. nudicarpum and significantly higher than that of selfing Z. corallinum. However, the level of microgeographic genetic diversity of clonal Z. zerumbet is comparable to that of selfing Z. corallinum and even slightly higher than that of outcrossing Z. nudicarpum. The genetic differentiation among local populations of clonal Z. zerumbet was significantly lower than that of selfing Z. corallinum, but higher than that of outcrossing Z. nudicarpum. A stronger spatial genetic structure appeared within local populations of Z. zerumbet compared with selfing Z. corallinum and outcrossing Z. nudicarpum. Conclusions Our study shows that fully clonal plants are able not only to maintain a high level of within-population genetic diversity like outcrossing plants, but can also maintain a high level of microgeographic genetic diversity like selfing plant species, probably due to the accumulation of somatic mutations and absence of a capacity for sexual reproduction. We suggest that conservation strategies for the genetic diversity of clonal and selfing plant species should be focused on the protection of all habitat types, especially fragments within ecosystems, while maintenance of large populations is a key to enhance the genetic diversity of outcrossing species.

Zingiber zerumbet (L.) Roscoe ex Sm. is an important medicinal herb from the zingiberaceae family that has long been used as a folk medicine to treat a variety of diseases. In the present study, rhizome essential oil of Z. zerumbet (ZZREO) was examined through Gas Chromatography-Mass Spectroscopy (GC/MS). Total 28 compounds were identified accounting 91.83% of the total oil. Zerumbone (71.93 ± 0.43%) was identified to be the predominant compound in ZZREO. Apart from zerumbone, camphene (4.01 ± 0.43%), α-humulene (3.83 ± 0.27%), germacrene B (2.38 ± 0.52%), elemol (2.02 ± 0.34%), camphor (1.57 ± 0.39 %) and eucalyptol (1.5 ± 0.29%) were found to be the other major constituents. ZZREO decreases the vitality of Jurkat (Acute T-cell leukaemia) cells in a concentration dependent manner, without damaging human PBMC according to the cytotoxic study. The inhibitory action of tested oil on Jurkat cells was noted at 24 and 48h with IC50 value of 36.37 ± 0.94 and 30.83 ± 0.82 μg/mL respectively. Annexin-FITC assay using flow cytometry showed that ZZREO induced apoptosis in jurkat cells. Similarly, cell cycle analysis by PI staining exhibited that it induces G2/M phase cell cycle attest in Jurkat cells. Additionally, DNA fragmentation analysis conformed the apoptosis exhibiting fragmented DNA of ZZREO treated Jurkat cells. ZZREO possesses substantial antiproliferative and apoptosis inducing activity against Jurkat cells, indicating that it could be employed as a therapeutic agent for acute T cell leukemia treatment and management. [ABSTRACT FROM AUTHOR]

The purpose of this study was to evaluate administration of Zingiber zerumbet (Z. zerumbet) extracts on performances, carcass characteristics and Echerichia coli (E. coli) bacteria of commercial broiler chickens. One hundred day old CP 707 broiler chickens (mixed sex) were randomly distributed into 20 floor pens with four treatments and five replicates. Each group of broilers was treated with diffrent level of Z. zerumbet extracts in drinking water (P0= control, P1= 0.025 % in drinking water, P2= 0.050 % in drinking water and P3= 0.075 % in drinking water). Broiler chickens were fed commercial diet based on nutrition requirement for starter and grower. Feed and water were provided ad libitum. Body wright of chickens and feed were recorded weekly. All data were recorded to measure for performances, carcass characteristics and the inhibition of E. coli bacteria. The data were analyzed by one-way ANOVA. Statistically differences among treatments were stated with a probablity of P0.05. The results of study indicated that administration of Z. zerumbet extract in drinking water with different concentration up to 4 weeks did not significantly influence (P0.05) on the performances, carcass and giblet characteristics of broiler chickens. The inhibition of E. coli bacteria was significantly affected (P0.05) by inclusion of Z. zerumbet at different concentration. In conclusion, administration of Z. zerumbet in drinking diet had no detrimental effect on animal performance, carcass and giblet characteristics.

Prospecting for plant growth promoting (PGP) endophytes is of particular relevance especially for soil-borne Pythium species that pose major productivity constraint for spice crop, ginger. Pythium- resistant wild ginger congener, Zingiber zerumbet L Smith constitutes a good source for prospecting PGP endophytes. Present study towards characterising bacterial flora from Z. zerumbet endosphere and rhizosphere yielded a total of 109 isolates from different tissue sets viz., leaves, rhizomes, axenically grown in vitro plantlets and rhizosphere. Morphological and PCR-RFLP analysis categorised isolates to 16 groups with representatives from each group identified by 16S rRNA sequence analysis. Isolates ZzTC6, ZzER11 and ZzER62 identified respectively as Bacillus pumilus, B. amyloliquefaciens and B. subtilis exhibited antagonism to P. myriotylum. Isolates also exhibited PGP traits like catalase and ammonia production with ZzTC6 also being IAA producer while ZzER62 positive for HCN. Endophytic isolates constitutes a valuable resource for development of BCAs against Pythium mediated soft-rot disease. [ABSTRACT FROM AUTHOR]

Zingiber zerumbet of the Zingiberaceae family is known as wild edible ginger having various medicinal properties. The present study was aimed at identification of high essential oil yielding genotypes tested through stability parameters at multilocation trials. During the year 2017, a total of 47 genotypes of Z. zerumbet was collected and planted at experimental farm of CSIR-NEIST, Jorhat, Assam India. A selection trial was conducted for two years viz., 2017 and 2018 for all the collected germplasm which led to the identification of a genotype with high fresh rhizome and essential oil yielding traits. The identified genotype "RRLJ ZB-103" was rich in fresh rhizome yield of 24.86 t/ha and essential oil of 0.75 % (FWB). The selected genotype was subjected to stability analysis along with two check varieties at five multilocation trials for two years. The assessment of stable performance was evaluated using Eberhart and Russell model. Variable environments were found to be present in the study as revealed by the significant variance due to environment and environment (linear). The genotype × environment interaction of the selected genotype also showed significant variance for all the traits revealing the good interaction of the genotype with all the environmental conditions. On comparative assessment, the selected genotype "RRLJ ZB-103" later named "Jor Lab ZB- 103" was found to be highly stable with high adaptability to varying environments for all the traits under study. While both the check varieties revealed low adaptability to varying environments for the higher-yielding traits. The GC/MS analysis of the essential oil of "Jor Lab ZB-103" revealed zerumbone (32.79 %) as the major compound followed by camphene (19.41 %) and eucalyptol (6.80 %). The other compounds were present as minor and trace compounds. The identified high yielding genotype "Jor Lab ZB-103" was found to be a highly stable genotype that could be made available in the public domain for commercial cultivation. [ABSTRACT FROM AUTHOR]

A simple, reliable high-performance thin-layer chromatography (HPTLC) method was developed for chemical fingerprinting of Zingiber zerumbet and quantitative estimation of zerumbone. Thirty-six batches of Z. zerumbet were collected from five eco-regions of eastern India. Zerumbone content varied from 52.4 to 214.6 mg/g (dry weight) in methanolic extract of Z. zerumbet rhizomes. Zerumbone content was in the following order: moist deciduous forests of the lower Gangetic plains > Brahmaputra valley evergreen forest > Odisha semi-evergreen forests > Sundarbans freshwater swamp forests > moist deciduous forest of the eastern highlands. Relative Standard Deviation (RSD) of the relative peak areas (RPA) and relative retention times (RRT) of eight characteristic peaks in repeatability and stability test were <3%, and the fingerprinting method was confirmed to be suitable for Z. zerumbet rhizomes. Chemometric approaches like hierarchical cluster analysis (HCA) and principal component analysis (PCA) were employed to classify Z. zerumbet samples based upon their eco-region. Consistent results were achieved showing Z. zerumbet samples could be effectively grouped according to their eco-region. The PCA loading plots identified three probable chemical markers, which might be useful in discriminating the samples. This combinative approach could be used for quality assessment of Z. zerumbet and for the formulations containing zerumbone. [ABSTRACT FROM AUTHOR]

Significant number of literatures has demonstrated the antiproliferative effect of Zerumbone and its role as anti-angiogenesis. The aims of this systematic review were to assess the anti-cancer effects of Zerumbone and the role of its antiangiogenic properties in treating cancer. Relevant articles were selected based on specific inclusion criteria. Articles chosen for this systematic review were between January 2008 and December 2018. Relevant articles were identified through an extensive search in Science Direct, PubMed, Google Scholar and Scopus. The literature searches of the electronic databases combined the following key words: anti-angiogenic, anticancer, Zerumbone and Zingiber zerumbet. Studies chosen for this review includes the following designs in vitro, in vivo and ex vivo. The initial literature search obtained a total of 352 related records and the final number of studies that met the inclusion criteria in the current review was 43 studies. In vitro studies were the commonest study design. Evidently, Zerumbone demonstrate a potential antiproliferative and antiangiogenic. The antiproliferative activities of Zerumbone was shown to induce by different signalling pathway. Zerumbone through its antiangiogenic effect play a great role in reducing invasion and metastasis. Some selected studies on Zerumbone were found to plague with limitation such as lack of toxic threshold value which may be needed for the clinical trials on this compound. [ABSTRACT FROM AUTHOR]

Abstract Background Zingiber zerumbet rhizome and its bioactive metabolites have previously been reported to exhibit innumerable pharmacological properties particularly anti-inflammatory activities. In the present study, the 80% ethanol extract, essential oil and zerumbone of Z. zerumbet rhizomes were explored for their in vitro immunosuppressive properties on chemotaxis, CD11b/CD18 expression, phagocytosis and chemiluminescence of isolated human polymorphonuclear neutrophils (PMNs). Methods The extract was analyzed quantitatively by performing a validated reversed phase high performance liquid chromatography (RP-HPLC). Zerumbone was isolated by chromatographic technique while the essential oil was acquired through hydro-distillation of the rhizomes and further analyzed by gas chromatography (GC) and GC-MS. Chemotaxis assay was assessed by using a 24-well cell migration assay kit, while CD18 integrin expression and phagocytic engulfment were measured using flow cytometry. The reactive oxygen species (ROS) production was evaluated by applying lucigenin- and luminol-enhanced chemiluminescence assays. Results Zerumbone was found to be the most abundant compound in the extract (242.73 mg/g) and the oil (58.44%). Among the samples tested, the oil revealed the highest inhibition on cell migration with an IC50 value of 3.24 μg/mL. The extract, oil and zerumbone showed moderate inhibition of CD18 integrin expression in a dose-dependent trend. Z. zerumbet extract showed the highest inhibitory effect on phagocytic engulfment with percentage of phagocytizing cells of 55.43% for PMN. Zerumbone exhibited strong inhibitory activity on oxidative burst of zymosan- and PMA-stimulated neutrophils. Zerumbone remarkably inhibited extracellular ROS production in PMNs with an IC50 value of 17.36 μM which was comparable to that of aspirin. Conclusion The strong inhibition on the phagocytosis of neutrophils by Z. zerumbet extract and its essential oil might be due the presence of its chemical components particularly zerumbone which was capable of impeding phagocytosis at different stages.

In order to find natural and inexpensive bioinsecticides, the active compound of waste extract from two medicinal plants were analyzed. Ethanolic extracts of Amomum cardamomum and Zingiber zerumbet were evaluated under laboratory conditions for their repellency against rice weevil (Sitophilus oryzae, L.). Four extracts concentration were tested in this research, i.e: 25, 50, 75 and 100%. Efficacy was measured based on the response of rice weevil in preference tests using Y Olfactometer Tube, then the results were converted into the Percentage Repellency (PR) and Preference Index (PI). The PR data were analyzed using ANOVA, whereas PI values were analyzed descriptively. The result showed that the PR were significantly (LSD test; α> 0.05) and revealed that waste extracts repel the rice weevil at 100% solution. The highest PR was found at 100% solution in both extracts, however, statistically the repellency of A. cardamomum waste extract was higher than Z. zerumbet’s. Likewise, the PI of both extracts showed negative value at 75 and 100% concentration. This study concluded that extract of A. cardamomum and Z. zerumbet wastes have repellent effect against rice weevil and A. cardamomum repellency is better than Z. zerumbet. The findings of this study can provide a useful information for development of a rice weevil repellent extracted from waste product of medicinal plants that is more economically and environmentally friendly than synthetic insect repellents.

Several active compounds from ‘Mother Nature’ have been found to be tailor-made therapeutics for the better management of numerous chronic ailments, with fewer adverse side effects. Zerumbone is one such molecule isolated from the rhizomes of Zingiber zerumbet (L.) Smith, a Zingiberaceae plant with significant medicinal values that has been used traditionally for treating stomach ache, ulcers, diabetes, leprosy, asthma, and skin diseases. Zerumbone has been found to be the most important active compound of Z. zerumbet, contributing to its anti-inflammatory, anti-microbial, anti-hypersensitivity, chemopreventive and chemotherapeutic activities. It has been established as a multi-targeted agent with potential to treat chronic diseases such as osteoarthritis, obesity, diabetes, diabetic nephropathy, diabetic retinopathy, chronic gastritis, neuropathic pain, atherosclerosis, inflammation and cancer through modulation of various cellular signaling cascades and antigen presentation pathways. Therefore, the present study focuses on zerumbone, its sources and biological activities against various chronic diseases by summarizing the literature available.

Headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography (GC-FID) was explored to determine the fingerprinting characteristic of Zingiber zerumbet L. volatiles to differentiate between different ginger species. The effect of different fibers [polydimethylsiloxane (PDMS, 7 μm), polyacrylate (PA, 85 μm)], different temperature and time on the HS-SPME-GC was investigated by using response surface methodology coupled with full factorial experimental design. The area percentage of the major sesquiterpenes (Zerumbone and α-humulene) were 56.3 ± 4.7% and 47.5 ± 27.2% with PA fiber, respectively at optimum condition of 70 °C and 30 min. Validation of the developed HS-SPME-GC method with limits of detection and quantification for zerumbone was 0.09 and 0.28 μg/g, respectively, demonstrating the suitable sensitivity of HS-SPME-GC method for the quantification of sesquiterpenes. Therefore, the simplicity of HS-SPME-GC makes it a convenient tool for qualitative and quantitative comparison of different ginger species targeting at the marker sesquiterpene molecule, zerumbone. [ABSTRACT FROM AUTHOR]

Osteoarthritis (OA) as the most frequent form of knee arthritis is one of the most annoying complications amongst old peoples. There are different pharmacological and non-pharmacological remedies which could be applied for treatment of knee OA. It's while, significant side effects mostly in patients who are older are the dangerous limiting factors. Integrative, supplementary, traditional remedies have been applied from long time ago in treatment of such chronic diseases like OA. Various topical and oral remedies have been presented in treatment of OA worldwide. In spite of the fact there are multiple remedies for reduction symptoms of patients who suffer from disorders and related inabilities which could enhance their life quality. Remedies which have been applied for a long time for treatment of OA have newly discovered to induce injury to some patients. On the other side, additional knowledge about alternative and supplementary remedies is a main way for enhancing health of patients who suffer from OA disorders. Zingiber zerumbet (Z. zerumbeton) is a kind of herb of the ginger family and is a natural compound with various biomedical characteristics like anti-proliferative, anti-inflammatory, and antioxidant effect. However, Z. zerumbet could be applied for reduction of OA symptoms because of its circulatory stimulant and anti-inflammatory effects. Anyway, up to now there is not any methodical literature review for evaluating the Z. zerumbet clinical effectiveness productiveness in treatment of OA. The main aim of the current study is to review scientific resources around therapeutic effectiveness of Zingiber zerumbet in treatment of adverse symptoms of OA disorder.

Zerumbone has been reported for their several biological activities. In our interest to this compound, we have identified and analyzed its content in Zingiber zerumbet, a medicinal plant from Indonesian traditional medicine and investigated its inhibitory activity against Mycobacterium tuberculosis, a known infection bacteria of tuberculosis. Analysis of zerumbone was performed with densitometry to leave, rhizome, flower, and stem of Z. zerumbet which was extracted with various solvent system and extraction methods to determine the best method to isolate zerumbone from Z. zerumbet. Result showed that the highest zerumbone was in rhizome while was not observed in other part. Analysis with various solvent and extraction methods showed the highest yield of zerumbone can be extracted by n-hexane (maceration) and reflux extraction method (methanol). Furthermore, inhibitory activity of zerumbone against M. tuberculosis was tested using Lowenstein Jensen medium by counting the number of M. tuberculosis colony growth in medium. Resulted inhibitory activity of zerumbone at all test concentration (0.5, 0.1, 0.05, 0.01, 0.005%) with the growth of 10, 12, 14, 15, and 50 colonies of M. tuberculosis was observed, respectively. This is indicate that zerumbone can be used as an alternative choice for treatment tuberculosis in the future.

Abstract Background Zingiber zerumbet (L.) Smith belongs to the Zingiberaceae family that is widely distributed throughout the tropics, particularly in Southeast Asia. It is locally known as ‘Lempoyang’ and traditionally used to treat fever, constipation and to relieve pain. It is also known to possess antioxidant and anti-inflammatory activities. Based on these antioxidant and anti-inflammatory activities, this study was conducted to investigate the effects of ethyl-acetate extract of Z. zerumbet rhizomes against ethanol-induced brain damage in male Wistar rats. Method Twenty-four male Wistar rats were divided into four groups which consist of normal, 1.8 g/kg ethanol (40% v/v), 200 mg/kg Z. zerumbet extract plus ethanol and 400 mg/kg Z. zerumbet plus ethanol. The extract of Z. zerumbet was given once daily by oral gavage, 30 min prior to ethanol exposure via intraperitoneal route for 14 consecutive days. The rats were then sacrificed. Blood and brain homogenate were subjected to biochemical tests and part of the brain tissue was sectioned for histological analysis. Result Treatment with ethyl-acetate Z. zerumbet extract at 200 mg/kg and 400 mg/kg significantly reduced the level of malondialdehyde (MDA) and protein carbonyl (p

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Copyright of Jurnal Veteriner is the property of Fakultas Kedokteran Hewan, Universitas Udayana 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.)

Protease mediated proteolysis has been widely implicated in virulence of necrotrophic fungal pathogens. This is counteracted in plants by evolving new and effective antimicrobial peptides (AMP) that constitute important components of innate immune system. Peptide extraction from rhizome of Zingiber zerumbet was optimized using ammonium sulphate (50–80% w/v) and acetone (60 and 100% v/v) with maximal protein recovery of 1.2 ± 0.4 mg/g obtained using 100% acetone. Evaluation of inhibitory potential of Z. zerumbet rhizome protein extract to prominent hydrolases of necrotrophic Pythium myriotylum revealed maximal inhibition of proteases (75.8%) compared to other hydrolytic enzymes. Protein was purified by Sephacryl S200HR resin resulting in twofold purification and protease inhibition of 84.4%. Non-reducing polyacrylamide gel electrophoresis (PAGE) of the fractions yielded two bands of 75 kDa and 25 kDa molecular size. Peptide mass fingerprint of the protein bands using matrix assisted laser desorption/ionization (MALDI)-time of flight (TOF) mass spectroscopy (MS) and subsequent MASCOT searches revealed peptide match to methylesterase from Arabidopsis thaliana (15%) and to hypothetical protein from Oryza sativa (98%) respectively. Further centrifugal filter purification using Amicon Ultra (10,000 MW cut-off) filter, yielded a prominent band of 25 kDa size. Concentration dependent inhibition of zoospore viability by Z. zerumbet AMP designated as ZzAMP was observed with maximal inhibition of 89.5% at 4 µg protein and an IC50 value of 0.59 µg. Studies are of particular relevance in the context of identifying the molecules involved in imparting below ground defense in Z. zerumbet as well in development of AMPs as potential candidate molecules for control of necrotrophic pathogens of agricultural relevance. [ABSTRACT FROM AUTHOR]

Little is known about the molecular basis of host defense in resistant wild species Zingiber zerumbet (L.) Smith against the soil-borne, necrotrophic oomycete pathogen Pythium myriotylum Drechsler, which causes the devastating soft rot disease in the spice crop ginger (Zingiber officinale Roscoe). We investigated the pattern of host defense between Z. zerumbet and ginger in response to P. myriotylum inoculation. Analysis of gene expression microarray data revealed enrichment of phenylpropanoid biosynthetic genes, particularly lignin biosynthesis genes, in pathogen-inoculated Z. zerumbet compared to ginger. RT-qPCR analysis showed the robust activation of phenylpropanoid biosynthesis genes in Z. zerumbet , including the core genes PAL , C4H , 4CL , and the monolignol biosynthesis and polymerization genes such as CCR , CAD , C3H , CCoAOMT , F5H , COMT , and LAC. Additionally, Z. zerumbet exhibited the accumulation of the phenolic acids including p -coumaric acid, sinapic acid, and ferulic acid that are characteristic of the cell walls of commelinoid monocots like Zingiberaceae and are involved in cell wall strengthening by cross linking with lignin. Z. zerumbet also had higher total lignin and total phenolics content compared to pathogen-inoculated ginger. Phloroglucinol staining revealed the enhanced fortification of cell walls in Z. zerumbet , specifically in xylem vessels and surrounding cells. The trypan blue staining indicated inhibition of pathogen growth in Z. zerumbet at the first leaf whorl, while ginger showed complete colonization of the pith within 36 h post inoculation (hpi). Accumulation of salicylic acid (SA) and induction of SA regulator NPR1 and the signaling marker PR1 were observed in Z. zerumbet. Silencing of PAL in Z. zerumbet through VIGS suppressed downstream genes, leading to reduced phenylpropanoid accumulation and SA level, resulting in the susceptibility of plants to P. myriotylum. These findings highlight the essential role of PAL -dependent mechanisms in resistance against P. myriotylum in Z. zerumbet. Moreover, our results suggest an unconventional role for SA in mediating host resistance against a necrotroph. Targeting the phenylpropanoid pathway could be a promising strategy for the effective management of P. myriotylum in ginger. • Pythium myriotylum infection induces lignin biosynthesis in Zingiber zerumbet. • Cell wall is fortified by lignin deposition in P. myriotylum infected Z. zerumbet. • P. myriotylum hyphae is inhibited at first leaf sheath whorl in Z. zerumbet • Salicylic acid is accumulated in P. myriotylum infected Z. zerumbet. • PAL suppression by VIGS compromise P. myriotylum resistance in Z. zerumbet. [ABSTRACT FROM AUTHOR]

Zerumbone is a natural compound found in bitter ginger plants (Zingiber zerumbet) that shows antiproliferative, antioxidant, anti-inflammatory, and analgesic properties. We aimed to investigate the role of zerumbone in improving the quality of life and symptom control in cancer patients with no treatment options. We conducted a pilot, non-randomized, single-center, open prospective, and systematic study on the use of 400 mg of zerumbone twice a day. The study included 35 patients (mean age, 68 years; 64% men), of which 16 completed the eight-week study. The intention-to-treat population showed no significant changes in weight or sleep quality over the eight-week study. Assessments performed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) showed significant improvements in the quality of life in the global (p = 0.072), activity (p = 0.0393), social (p = 0.0001), and emotional (p = 0.0023) dimensions. The Hospital Anxiety and Depression Scale (HADS) questionnaire scores showed significant improvement in anxiety (p = 0.032) and depression (p = 0.021), while the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) questionnaire scores also indicated a significant improvement (p = 0.001). Bitter ginger showed low toxicity. Bitter ginger showed promising results in improving the quality of life and reducing symptoms of anxiety and depression in the study population. A randomized placebo-controlled study is necessary to confirm these results. This trial was registered under the number FMABC: CAAE – 93459418.00000082, at ISRCTN (BIOMED CENTRAL) NUMBER 4388 (03/07/23) and at Plataforma Brasil (https://plataformabrasil.saude.gov.br/login.jsf) • Patients with advanced cancer experience symptoms that decrease their quality of life. • We tested Zingiber zerumbet in 35 patients with terminal cancer at a dose of 400 mg PO BID. • We observed significant improvement in their overall quality of life, fatigue, depression and anxiety. • Zingiber zerumbet showed a very tolerable toxicity profile. • A randomized placebo-controlled trial is necessary to confirm our preliminary data. [ABSTRACT FROM AUTHOR]

Different species of Zingiberaceae are very similar in appearance, which brings some obstacles in the accurate identification of species. Here, we assembled and analyzed the complete chloroplast (cp) genome of Zingiber zerumbet. The cp genome of Z. zerumbet is 169,183 bp in length, which contains a pair of inverted repeated (IR) regions of 37,480 bp, a large single copy (LSC) region of 86,709 bp, and a small single copy (SSC) region of 7,515 bp. The genome contains a total of 138 genes, including 92 protein-coding genes, 38 transfer RNA genes, and eight ribosomal RNA genes. Phylogenetic analysis exhibited that the cp genome sequence could distinguish Z. zerumbet from other species. This study is beneficial to the germplasm identification and utilization of Z. zerumbet.

Osteoarthritis (OA) as the most frequent form of knee arthritis is one of the most annoying complications amongst old peoples. There are different pharmacological and non-pharmacological remedies which could be applied for treatment of knee OA. It's while, significant side effects mostly in patients who are older are the dangerous limiting factors. Integrative, supplementary, traditional remedies have been applied from long time ago in treatment of such chronic diseases like OA. Various topical and oral remedies have been presented in treatment of OA worldwide. In spite of the fact there are multiple remedies for reduction symptoms of patients who suffer from disorders and related inabilities which could enhance their life quality. Remedies which have been applied for a long time for treatment of OA have newly discovered to induce injury to some patients. On the other side, additional knowledge about alternative and supplementary remedies is a main way for enhancing health of patients who suffer from OA disorders. Zingiber zerumbet (Z. zerumbeton) is a kind of herb of the ginger family and is a natural compound with various biomedical characteristics like anti-proliferative, anti-inflammatory, and antioxidant effect. However, Z. zerumbet could be applied for reduction of OA symptoms because of its circulatory stimulant and anti-inflammatory effects. Anyway, up to now there is not any methodical literature review for evaluating the Z. zerumbet clinical effectiveness productiveness in treatment of OA. The main aim of the current study is to review scientific resources around therapeutic effectiveness of Zingiber zerumbet in treatment of adverse symptoms of OA disorder. [ABSTRACT FROM AUTHOR]

Pythium species are aggressive soil-borne necrotrophic oomycetes causing soft-rot disease of ginger. Disease severity indices determined following infection with P. myriotylum Drechsler in ginger cultivar, Zingiber officinale cv. Varada and a wild congener, Z. zerumbet at varying zoospore concentrations (104–1012 spores/ml) revealed high disease severity (100%) in ginger cultivar whereas Z. zerumbet displayed resistance. Absence of positive correlation between Z. zerumbet resistance and polyphenolic content indicates role of polyketides and zerumbone in preventing pathogen ingress, as reported earlier. Towards elucidating this, Z. zerumbet specific polyketide synthase (PKS) and terpene synthase (TPS) gene sequences designated ZzTPS and ZzPKS respectively were characterised. Phylogenetic analysis clustered ZzTPS with TPS-b sub-family and ZzPKS with non-chalcone forming PKS. ZzTPS and ZzPKS showed biphasic expression with first at 6 hours post infection (hpi) and then at 8 hpi, indicative of rapid induction followed by reinforcement to sustain resistance mechanisms in the wild taxon. [ABSTRACT FROM AUTHOR]

Plant-parasitic nematodes are known as one of the most important pests attacking various plants in the world, and investigating the nematode component is very essential for management of this pest and prevent damage to plants in general. Our survey of plant-parasitic nematodes on medicinal plants in Me Linh Station for Biodiversity, a place for conservation of precious plants and animals in Vietnam, identified ten species that belong to nine genera, five families, and two orders of plant-parasitic nematodes parasitizing six medicinal plants. Excoecaria cochinchinensis was parasitized by the highest number of nematode genera (5 genera, including Xiphinema, Discocriconemella, Meloidogyne, Helicotylenchus, and Hemicriconemoides), while Hymenocallis littoralis was associated with the highest number of plant-parasitic nematodes (2060 nematodes/250g soil). The results also showed that Discocriconemella limitanea was found to be a dominant species with the highest number of individuals on 6 medicinal plants, and the genus Helicotylenchus had the highest frequency of appearance (5/6 plants or 83.3%). These nematodes caused symptoms such as yellowing leaves, root galls, and root lesions, which directly affect the quality and yield of medicinal plants. Based on the results, this study showed that plant-parasitic nematodes are a potential threat to the cultivation of medicinal plants in Me Linh Station for Biodiversity, and thus, control measures should be applied to ensure sustainable cultivation of medicinal plants in this place. [ABSTRACT FROM AUTHOR]

Zingiber zerumbet is a type of wild ginger known worldwide for its medicinal values. Its constituents found in the rhizome suggest potent antioxidant and anti-inflammatory activities. As such, this study investigated the possible curative effects of Zingiber zerumbet rhizome ethanolic extract (ZZ) on Paracetamol (PCM)-induced hepatotoxicity. The plant was obtained from Sendayan, Negeri Sembilan and had been identified by the Biodiversity Unit of Universiti Putra Malaysia (UPM), Malaysia. Its rhizomes were processed and extracted with 80% ethanol. The chemical profile of the extract was determined using Gas Chromatography-Mass Spectrometry (GC-MS) analysis, while hepatotoxic rats were treated orally with varied extract doses (250, 350, and 450 mg/kg bwt) for a week, and N-acetyl-L-cysteine (NAC) was used as reference drug. At the end of the treatment, sera samples were collected for liver function tests (LFTs). The chemical profile of the extract determined via GC-MS analysis revealed three major compounds that contributed to the bioactivity of the plant. Zerumbone had the highest component concentration (95%) in the extract for GC-MS study. Significant improvements in LFT parameters (alkaline phosphatase (ALP), alanine transaminase (ALT), aspartate aminotransferase (AST), and total protein (TP) levels) were also observed in groups that received 350 and 450 mg/kg bwt extract, wherein the 350 mg/kg bwt dose appeared to be the most effective dose that reduced liver enzyme markers in PCM-induced hepatotoxic rats. Overall, Z. zerumbet exhibited the most optimum hepatocurative potential in enhancing liver functions amidst PCM-induced hepatotoxic rats at 350 mg/kg bwt dose. [ABSTRACT FROM AUTHOR]

Although post infection changes in cell wall constituents are known to induce the immune response in plants against necrotrophs, little is known about the role of the cell wall in mediating resistance in Zingiber zerumbet (L.) Smith (Zingiberaceae) against the soil-borne necrotrophic oomycete Pythium myriotylum Drechsler, which causes soft-rot disease. Using RNA-Seq in combination with custom gene expression microarray we studied the temporal expression profile of 46 wall-associated genes in Z. zerumbet against P. myriotylum inoculation. Many genes that promote cell wall loosening were suppressed. Similarly, the genes involved in the biosynthesis and the signaling of phytohormones and the receptor-like kinases that mediate cell elongation were also suppressed. Several monolignol biosynthetic pathway genes were up-regulated. Histochemistry of the collar region of the aerial stem revealed H 2 O 2 accumulation, increased lignification of the mesophyll cells surrounding vascular bundles in the leaf sheath and the significant increase in total lignin content. Pathogen hyphae were restricted to peripheral leaf sheath and were not extended into the pith through which the principal portion of the connective tissues passes in the aerial stem. Results highlight a coordinated transcriptional reprogramming of cell wall-associated genes to bring about changes in cell wall composition to minimize the cell wall damage caused by pathogen factors and to render the cell wall less amenable to pathogen penetration. The study illustrates a key role for cell wall fortification in preventing pathogen colonization in the vascular tissues, thus ensuring the transport system remains unaffected by the pathogen invasion. • Transcriptional changes of cell-wall related genes and histopathology were examined in resistant Zingiber zerumbet against Pythium myriotylum infection. • Many genes that promote cell wall loosening and cell elongation were suppressed. • Several monolignol biosynthetic pathway genes were up-regulated. • Histochemistry revealed H 2 O 2 accumulation, increased lignification of the mesophyll cells in the leaf sheath and the significant increase in total lignin content. • The study illustrates a key role for cell wall fortification in preventing pathogen colonization in the vascular tissues. [ABSTRACT FROM AUTHOR]

In order to find natural and inexpensive bioinsecticides, the active compound of waste extract from two medicinal plants were analyzed. Ethanolic extracts of Amomum cardamomum and Zingiber zerumbet were evaluated under laboratory conditions for their repellency against rice weevil (Sitophilus oryzae, L.). Four extracts concentration were tested in this research, i.e: 25, 50, 75 and 100%. Efficacy was measured based on the response of rice weevil in preference tests using Y Olfactometer Tube, then the results were converted into the Percentage Repellency (PR) and Preference Index (PI). The PR data were analyzed using ANOVA, whereas PI values were analyzed descriptively. The result showed that the PR were significantly (LSD test; α> 0.05) and revealed that waste extracts repel the rice weevil at 100% solution. The highest PR was found at 100% solution in both extracts, however, statistically the repellency of A. cardamomum waste extract was higher than Z. zerumbet's. Likewise, the PI of both extracts showed negative value at 75 and 100% concentration. This study concluded that extract of A. cardamomum and Z. zerumbet wastes have repellent effect against rice weevil and A. cardamomum repellency is better than Z. zerumbet. The findings of this study can provide a useful information for development of a rice weevil repellent extracted from waste product of medicinal plants that is more economically and environmentally friendly than synthetic insect repellents. [ABSTRACT FROM AUTHOR]

Zingiber zerumbet rhizome has been used in traditional medicine mainly for the treatment of various immune-inflammatory related ailments and has been shown to exhibit a wide spectrum of biological effects especially antioxidant and anti-inflammatory activities. The present study was aimed to investigate the immunosuppressive effects of the standardized 80% ethanol extract of Z. zerumbet at 100, 200, and 400 mg/kg on the innate immune responses in male Wistar rats. The immune parameters determined were chemotaxis of neutrophils, Mac-1 expression, engulfment of Escherichia coli by neutrophils, reactive oxygen species production, and plasma lysozyme and ceruloplasmin levels. Zerumbone was qualitatively and quantitatively determined in the extract by using a validated reversed-phase HPLC, whereas liquid chromatography tandem-mass spectrometry (LC -MS/MS) was used to profile the secondary metabolites. Z. zerumbet significantly inhibited the migration of neutrophils, expressions of CD11b/CD18 integrin, phagocytic activity, and production of reactive oxygen species in a dose-dependent manner. The extract also dose-dependently inhibited the expressions of lysozyme and ceruloplasmin in the rat plasma. Z. zerumbet extract possessed strong inhibitory effects on the innate immune responses and has potential to be developed into an effective immunosuppressive agent. [ABSTRACT FROM AUTHOR]

Background: Zingiber zerumbet rhizome has been used as spices and in traditional medicine to heal various immune-inflammatory related ailments. Although the plant was reported to have potent anti-inflammatory and immunosuppressive properties by several studies, the molecular mechanisms underlying the effects have not been well justified.Purpose: The study was carried out to investigate the molecular mechanisms underlying the anti-inflammatory properties of the standardized 80% ethanol extract of Z. zerumbet through its effect on mitogen-activated protein kinase (MyD88)-dependent nuclear factor-kappa B (NF-кB), mitogen activated protein kinase (MAPK) and phosphatidylinositol 3-kinase/Akt (PI3K-Akt) signaling pathways in lipopolysaccharide (LPS)-induced U937 human macrophages.Methods: Standardization of the 80% ethanol extract of Z. zerumbet was performed by using a validated reversed-phase HPLC method, while LC-MS/MS was used to profile the secondary metabolites. The release of pro-inflammatory markers, tumor necrosis factor (TNF)-α, interleukin (IL)-1β and prostaglandin E2 (PGE2) was evaluated by enzyme-linked immunosorbent assay (ELISA), while the Western blot technique was executed to elucidate the expression of mediators linked to MyD88-dependent respective signaling pathways. Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) assay was carried out to quantify the relative gene expression of cyclooxygenase (COX)-2 and pro-inflammatory mediators at the transcriptional level.Results: The quantitative and qualitative analyses of Z. zerumbet extract showed the presence of several compounds including the major chemical marker zerumbone. Z. zerumbet extract suppressed the release of pro-inflammatory mediators, COX-2 protein expression and downregulated the mRNA expression of pro-inflammatory markers. Z. zerumbet-treatment also blocked NF-κB activation by preventing the phosphorylation of IKKα/β and NF-κB (p65) as well as the phosphorylation and degradation of IκBα. Z. zerumbet extract concentration-dependently inhibited the phosphorylation of respective MAPKs (JNK, ERK, and p38) as well as Akt. Correspondingly, Z. zerumbet extract suppressed the upstream signaling adaptor molecules, TLR4 and MyD88 prerequisite for the NF-κB, MAPKs, and PI3K-Akt activation.Conclusion: The findings suggest that Z. zerumbet has impressive role in suppressing inflammation and related immune disorders by inhibition of various pro-inflammatory markers through the imperative MyD88-dependent NF-κB, MAPKs, and PI3K-Akt activation. [ABSTRACT FROM AUTHOR]

Essential oil of twenty-five germplasms of Zingiber zerumbet from different accessions of Eastern India were analysed using Gas Chromatography-Mass Spectroscopy (GC/MS). A total of 29 constituents were identified representing between 72.45-98.93% of total area. Zerumbone content was found to be in a range of 60.1-79.59% for the tested rhizomes. Acc. Haroa (W.B) was found to contain highest amount of zerumbone (79.59%) in its rhizome oil. α-humulene, (0.62-7.15%), camphene (0.91-6.2%), α-fenchene (0.76-5.05%), eucalyptol (0.21-1.8%) and camphor (0.79-2.0%) were found as the other major constituents in all tested oils. According to agglomerative hierarchical clustering (AHC) and principal component analysis (PCA), the essential oil from collected accessions were divided into two major groups. Furthermore ISSR analysis showed 59.6-100% polymorphism among the tasted samples. The PIC value and the resolving power (RP) were found to be in a range of 0.37-0.71 and 3.76-12.48 respectively. The unweighted pair-group method with arithmetic averages (UPGMA) cluster analysis divided the germplasms in to two major clusters. Nei's genetic diversity (h) of 0.2874± 0.1592 and Shannon's informationindex (I) of 0.4421± 0.2046 describes a low genetic diversity in Z. zerumbet. Furthermore ISSR analysis showed 59.6-100% polymorphism among the tested samples. The PIC value and the resolving power (RP) were found to be in a range of 0.37-0.71 and 3.76-12.48 respectively. The results of this study will be helpful in the assortment of appropriate genotypes for different climatic conditions as well as for the conservation and enhancement programme. [ABSTRACT FROM AUTHOR]

Graphical abstract Highlights • Zerumbone can exhibit potent chemopreventive and therapeutic effects against various chronic diseases. • It can alter the expression of various signaling molecules involved in disease progression. • Zerumbone has been reported to be relatively non-toxic in analyzed disease models so far. Abstract Several active compounds from 'Mother Nature' have been found to be tailor-made therapeutics for the better management of numerous chronic ailments, with fewer adverse side effects. Zerumbone is one such molecule isolated from the rhizomes of Zingiber zerumbet (L.) Smith, a Zingiberaceae plant with significant medicinal values that has been used traditionally for treating stomach ache, ulcers, diabetes, leprosy, asthma, and skin diseases. Zerumbone has been found to be the most important active compound of Z. zerumbet , contributing to its anti-inflammatory, anti-microbial, anti-hypersensitivity, chemopreventive and chemotherapeutic activities. It has been established as a multi-targeted agent with potential to treat chronic diseases such as osteoarthritis, obesity, diabetes, diabetic nephropathy, diabetic retinopathy, chronic gastritis, neuropathic pain, atherosclerosis, inflammation and cancer through modulation of various cellular signaling cascades and antigen presentation pathways. Therefore, the present study focuses on zerumbone, its sources and biological activities against various chronic diseases by summarizing the literature available. [ABSTRACT FROM AUTHOR]

[Display omitted] • Zer increased hyaluronic acid and inhibited ROS generation in non– or UVB-irradiated HaCaT cells. • Zer upregulated antioxidant HO-1 and γ-GCLC expression by activating Nrf2 pathway in HaCaT cells. • Zer promoted HAS-2 and AQP-3 protein and mRNA expression in non– or UVB-irradiated HaCaT cells. • Zer prevented UVB-irradiated ROS-mediated Src/ERK inhibition in HaCaT cells. • Zer suppressed iNOS/COX-2/IL-1β expression via NFκB/AP-1 inhibition in UVB-exposed HaCaT cells. We assayed skin hydration and anti-inflammatory efficacies of zerumbone (Zer, 2.5–10 μM), a natural sesquiterpene of Zingiber zerumbet , using non– or UVB (30 mJ/cm2)-irradiated keratinocytes (HaCaT). & Zer increased cell viability, upregulated hyaluronic acid, and inhibited ROS generation in UVB-irradiated HaCaT cells. Zer promoted antioxidant Nrf2 nuclear translocation resulting in HO-1 and γ-GCLC expression. Zer promotes skin hyaluronic acid by increasing protein and mRNA expression of HAS-2 and AQP-3 in non– or UVB-irradiated HaCaT cells. Furthermore, Zer increased Src and ERK phosphorylation. Src silencing or ERK inhibitor (PD98059) diminished Zer-mediated skin hydration, as evidenced by decreased HAS-2 and AQP-3 expression. Interestingly, UVB-induced Src/ERK inhibition was reversed by Zer or N -acetylcysteine. Additionally, Zer inhibited inflammatory iNOS, COX-2, and IL-1β expression through NFκB (p65) and AP-1 (c-Jun/c-Fos) pathway in UVB-irradiated HaCaT cells. HaCaT cells treated with Zer enhanced the growth factors PDGF-A, VEGF, and EGFR expressions. Zerumbone might be utilized in cosmetic formulations. [ABSTRACT FROM AUTHOR]

Zingiber zerumbet (L) Smith is part of the Zingiberaceae family, one of the largest families of the plant kingdom. Z. zerumbet is a perennial, aromatic and tuberose plant that grows in humid locations where its center of distribution is located in the South-East Asia region. This plant has been traditionally used in foods and beverages and for ornamental purposes. Although many studies have reported on the biomedical applications of Z. zerumbet, the anti-allergic effects of Z. zerumbet and its major bioactive compounds have not yet been summarized in detail. Many major metabolites that have been reported to contain anti-allergic properties are terpene compounds which can be found in the essential oil extracted from the rhizomes of Z. zerumbet, such as zerumbone, limonene, and humulene. The rhizome is among the part of Z. zerumbet that has been widely used for many studies due to its exceptional biomedical applications. Most of these studies have shown that the essential oil, which can be obtained through hydro-distillation of the rhizomes from Z. zerumbet, is enriched with various active metabolites. Therefore, this mini-review provides an overview of the main aspects related to the anti-allergic and immunomodulatory properties of the major bioactive compounds found in the essential oils extracted from the rhizomes of Z. zerumbet, with the aim of demonstrating the importance of essential oil extracted from the rhizomes of Z. zerumbet and its bioactive compounds in the treatment of allergy and allergy-related diseases, in addition to other widely reported and extensively studied biomedical applications.

Aim: The aim of this research to evaluate the activities of Zingiber zerumbet ethanolic extract (ZZEE) and Channa striata powder (CSP) used an animal model, albino Wistar mice, induced by alloxan; meanwhile, anti-inflammatory activity was induced using carrageenan to produce paw edema. Materials and Methods: The study used a post-test design with five treatment groups, each of which consisted of five mice. The groups for anti-inflammation study were negative control, positive control, 150 mg/kgBW dose of CSP, 150 mg/kgBW dose of ZZEE, and 150 mg/kgBW dose of the combination of CSP-ZZEE. The treatment groups of antidiabetic study were as negative control, positive control, 300 kg/kgBW dose of ZZEE, 300 mg/kgBW dose of CSP, and 300 mg/kgBW dose of the combination of ZZEE and CSP. Results: The results showed the percentage inhibition of the paw edema of ZZEE, CSP, combination of ZZEE-CSP, and positive control groups at 40.01 ± 7.19, 35.25 ± 8.48, 36.56 ± 7.22, and 36.10 ± 2.89%, respectively, whereas the percentage of decreasing capability of blood sugar level of ZZEE, CSP, combination of ZZE-CSP, and positive control successively was at 61.09 ± 16.20, 33.78 ± 26.67, 69.59 ± 13.53, and 74.72 ± 9.90%. Conclusions: There was a synergistic effect on anti-diabetes activity of ZZEE and CSP. Meanwhile in anti-inflammation study did not perform synergistic effect. [ABSTRACT FROM AUTHOR]

Obesity is a worldwide health problem that may impose infertility risks in males. This study was designed to determine the effect of Zingiber zerumbet rhizome ethanol extract (ZZREE) on testosterone levels and testes histology in high fat dietinduced obese rats. Rats were fed with high fat diet (HFD) containing 50% rat chow pellet, 20% pure ghee, 20% full cream milk powder, 6% corn starch and 4% corn oil, ad libitum daily to induce obesity. Twenty obese rats were randomly divided into 4 groups (n=5). A group of obese rats (n=5) was treated with 1% body weight (bwt) of saline and served as a negative control while another 3 groups (n=5) of obese rats were treated orally with 200, 300, 400 mg/kg bwt of ZZREE, respectively. In addition, a group of non-obese rats (n=5) was treated with 1% bwt of saline and served as normal control. At the end of experiment, blood and testes tissues were collected for testosterone assay and histological studies. The testosterone levels of HFD-induced obese rats treated with ZZREE at all concentrations significantly increased (p<0.05) compared to the negative control. ZZREE also significantly increased (p<0.05) the Johnsen's scores, decreased the diameter of lumens (p<0.05) and increased the width of the spermatid-sperm layers (p<0.05) in HFD-induced obese rats, indicating improved spermatogenesis. Therefore, it can be concluded that ZZREE showed positive effects in improving testosterone secretion and spermatogenesis in HFD-induced obese rats. [ABSTRACT FROM AUTHOR]

Background: Zingiber zerumbet rhizome ethyl acetate extract (ZZRE) has the potential to be developed as a wound-healing agent with its profound anti-inflammatory property. Objective: This study was conducted to evaluate the wound healing effects of 5% ZZRE on open wound in rats. Materials and Methods: Wistar rats (n = 90) were divided into three groups, negative control (treated with PBS), positive control (treated with solcoseryl gel), and 5% ethyl acetate extract of Z. zerumbet, respectively. Wounds were induced on the rat's dorsal surface on day 0. Measurements of wound closure, total protein, uronic acid, hexosamine, cathepsin B, hydroxyproline, and histological observations were conducted on the wound tissues. Results: ZZRE-treated group showed increment in wound closure, protein, and hydroxyproline level. The uronic acid and hexosamine levels of ZZRE-treated wounds significantly increased on the 3rd day (P < 0.05). Histological observations demonstrated formation of granulation tissue was faster and denser in ZZRE-treated group. Conclusion: ZZRE enhances open wound healing in rats and has potential to be developed as a healing agent in the future. Abbreviations Used: ZZRE: Zingiber zerumbet rhizomes extract, PDGF: Platelet-derived growth factor, TGF-β: Transforming growth factor-beta, PBS: Phosphate-buffered saline, EDTA: Ethylenediaminetetraacetic acid [ABSTRACT FROM AUTHOR]