FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (24): 147-151.doi: 10.7506/spkx1002-6630-201224030

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Extraction and Decolorization of Mycelial Polysaccharides from Gloeostrereum incarnatum

ZHANG Gong-liang,WANG Ying-nan,LIU Yang,ZHANG Hao,HOU Hong-man*   

  1. School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
  • Received:2011-09-24 Revised:2012-11-21 Online:2012-12-25 Published:2012-12-12

Abstract:

Orthogonal array design was used to optimize conditions for the extraction and de-colorization of mycelial polysaccharides from Gloeostereum incarnatum to obtain enhanced yield and purity. The optimum extraction conditions were found to be three extraction cycles at 95 ℃ for 8 h with a water-to-solid ratio of 40:1. Under these conditions, the polysaccharide yield was 8.60%. AB-8 resin was used to decolorize the crude polysaccharide extract, and the optimum decolorization conditions were found to be a solid-to-liquid ratio of 0.2 g/mL, pH 4.0 and 60 ℃.

Key words: Gloeostereum insarnatum, mycelium, polysaccharides, extraction, de-colorization

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