FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (8): 314-317.

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Preparation of Biomaterial-pullulan with Starch Waste Water and Malt Root

 SHAO  Rong, XU  Qi, LIU  Shan-Shan, YU  Xiao-Hong, WANG  Zhi-Jun, FANG  Wei-Ming   

  1. 1.College of Chemistery and Biological Engineering, Yancheng Institue of Technology, Yancheng 224003, China; 2.Yangzhou University, Yangzhou 225009, China
  • Online:2007-08-15 Published:2011-10-24

Abstract: Pullulan is a kind of microbial exopolysac-chafide with important applicable value. Starch waste water is an inevitable byproduct during starch production with complicate components and rich nutrients. Malt root is the by-product of malt manufacture, rich in amylase, the malt enzyme, the tartaric acid enzyme and the proteinase, richly contains the B race vitamin, and includes the massive unknown growth factor. Therefore, enzymolysis of starch industrial waste water with malt root including rich enzyme and the growthfactor, is advantageous for the growth and metabolism of Aureobasidium pullulans. the experiment indicated, it has the certain feasibility. The optimum conditions were at temperature of 28~30 ℃, l80 r/min, initial pH 6.5 and fermentation time 120 h. Comparatively suits to the metabolism of Aureobasidium pullulans with the mix nutrient fluid of the malt root and the starch waste water, produces the pullulan polysaccharide.

Key words: pullulan polysaccharide, starch waste water, biomaterial, fermentation