文章基本信息

标题：Optimization of Culture Conditions for Lichen Usnea ghattensis G. Awasthi to Increase Biomass and Antioxidant Metabolite Production
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作者：Behera, Bhaskar C. ; Verma, Neeraj ; Sonone, Anjali 等
期刊名称：Food Technology and Biotechnology
印刷版ISSN：1330-9862
电子版ISSN：1334-2606
出版年度：2009
卷号：47
期号：1
页码：7-12
出版社：Sveuciliste u Zagrebu - Faculty of Food
摘要：The aim of this study is to optimize the culture conditions for lichen Usnea ghattensis G. Awasthi in order to increase biomass and antioxidant metabolite production. The cultured lichen consisted of usnic acid produced by mycobionts and photobionts after 2 to 3 months of inoculation. Cultures grown in the media with excess carbon sources showed significant increment in the biomass growth, usnic acid production and total polyphenol mass fraction after six months of inoculation. The methanol extract of six-month-old cultures grown in the malt-yeast extract (MYE) medium containing 0.01 mol/L of sucrose and 0.01 mol/L of polyethylene glycol showed a significantly high inhibition of lipid peroxidation activity up to 89 %. A significant correlation (R^2=0.89) of p<0.01 was also found between total polyphenol mass fraction and the inhibition of lipid peroxidation in this lichen species.
关键词：lichen; usnic acid; lipid peroxidation