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Anti-yeast activities of Origanum oil against human pathogenic yeasts

Advances in Bioscience and Biotechnology 2011年第2期2卷 103-107页

作者： Amber Adams Satyanshu Kumar John Clauson shivendra sahi 不详

Outbreak of autoimmune diseases by pathogenic yeasts has led to a serious medical threat. As these organisms evolve resistance to existing antifungal drugs, the concern could be further compounded. The realm of plant derived products offers a wide spectrum of potentially valuable alternatives to the existing synthetic fungicides. Essential oils from sev-eral medicinal plants have been shown to exhibit pharmacological attributes. In the present study, anti-yeast properties of Oregano essential oil (OEO) were examined in vitro against four human patho-genic yeasts i.e., Candida albicans, Cryptococcus al-bidus, Cryptococcus neoformans and Rhodotorula ru-brum. OEO concentration of 200 μg/mL was found to be growth inhibitory against all four yeasts examined, thereby showing its potential to function as a natural anti-yeast agent.

关键词： Origanum Vulgare Candida Albicans Cryptococcus Neoformans Rhodotorula Rubrum Cryptococcus Albidus

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Chromium detoxification mechanism induced growth and antioxidant responses in vetiver(Chrysopogon zizanioides(L.) Roberty)

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Journal of Central South University 2019年第2期26卷 489-500页

作者： AN Wen-hui LI Wai-chin WU Chuan School of Metallurgy and Environment Central South University Plant Genetic Engineering and Molecular Biology Lab Department of Biotechnology Periyar University Department of Science and Environmental Studies The Education University of Hong Kong Department of Biology Western Kentucky University Department of Marine Science University of Calcutta

This study investigated the chromium(Cr)detoxification mechanism-induced changes in growth and antioxidant defence enzyme activities in Chrysopogon *** growth decreased by 36.8%and 45.0%in the shoots and roots,respectively,in the 50 mg/L Cr *** accumulation was higher in root(9807μg/g DW)than in shoots(8730μg/g DW).Photosynthetic pigments and malondialdehyde content increased up to the 30 mg/L Cr treatment,whereas they declined at higher *** activity of superoxide dismutase(SOD),catalase(CAT)and peroxidase(POX)were increased significantly with increasing of Cr dose but slightly declined at higher *** banding patterns revealed the expression of multiple bands for SOD,CAT and POX enzymes,and the band intensity decreased at high doses of Cr *** results indicate that higher Cr doses increased the oxidative stress by over production of reactive oxygen species(ROS)in vetiver that had potential tolerance mechanism to Cr as evidenced by enhanced level of antioxidative enzymes,photosynthetic pigments,MDA ***,vetiver has evolved a mechanism for detoxification and accumulates higher concentration of toxic *** study provides a better understanding of how vetiver detoxifies Cr.

关键词： chromium Chrysopogon zizanioides detoxification mechanism antioxidant enzymes phytoremediation

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