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Liquid Fermentation of Ganoderma applanatum and Antioxidant Activity of Exopolysaccharides



LIU Zhong-hua*, HOU Xiao-ge, Zhao Jin-hui , HE Le
College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, Henan, 466000, China


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© Zhong-hua et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, Henan, 466000, China; Tel: 13839439312; E-mail: lzh.hzl@163.com


Abstract

The medium composition and fermentation conditions of Ganoderma applanatum(GA) strain were optimized by the liquid shake flask fermentation, and the antioxidant activity of exopolysaccharides was investigated. The results showed that the optimal conditions of the liquid fermentation of GA strain were as follows: Carbon source was corn powder, nitrogen source was soy powder, the initial pH was 6.0, the inoculum size was 8%, the fermentation temperature was 32oC, the fermentation time was 7 d. The exopolysaccharides of GA strain could scavenge hydroxyl radicals(HR) and superoxide anion radicals(SAR), and the concentration of exopolysaccharides was positively related to the antioxidant activity.

Keywords: Antioxidant activity, GA, liquid fermentation. .



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