Study on Optimization of Submerged Fermentation for Cordycepic Polysaccharides and Beverage Exploitation

Abstract

Abstract: The effects of culture time, initial pH, ethanol concentration and secondary supplementing sugar on the biomass and the polysaccharides production of Cordyceps sinensis were studied. The results showed:the optimum culture time 6d, initial pH 5.5, ethanol thickness 1.0% and secondary supplementing sugar Glu+Man+Gal(3:4:2)1.2g/100ml. The maximal output of polysaccharides and the mycelium weight reached 5949.6mg/L and 17.35g/L respectively. The optimum functions obtained whencordycepic beverage was added with Lycium barbarum and Codonopsis pilosula (2:1) 15g/100ml. The best beverage formula is fermentative fluid:water=70:30, sucrose 7%, citric acid 0.1% and stability 0.15%.

Key words: Cordyceps sinensis, submerged culture, polysaccharides, beverage

WU Zhong-Wei, WANG Zhen-He, ZHAO Xian-Fang, GUO Ai-Lian. Study on Optimization of Submerged Fermentation for Cordycepic Polysaccharides and Beverage Exploitation[J]. FOOD SCIENCE, 2007, 28(2): 205-209.

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Study on Optimization of Submerged Fermentation for Cordycepic Polysaccharides and Beverage Exploitation

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