FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (2): 98-101.

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Study on Preparation and Antimicrobial Activity of Chitosan Oligomers

 PENG  Yi-Qiang, ZHU  Li-Ping, LIU  Wen, FANG  Bai-Shan   

  1. Fujian Province Key Laboratory of Industrial Biotechnology, Huaqiao University, Quanzhou 362021, China
  • Online:2007-02-15 Published:2011-12-31

Abstract: Chitosan was prepared by alkali treatment. Its yield was 5.28%, degree of deacetylation 81.7%, intrinsic viscosity was 10.550 and molecular weight 54.42×104. Chitosan degradated by H2O2 oxidation time to form respectively different molecular weights 32.3×104, 6.7×104 and 0.496×104. Its antimicrobial activity for St.aureus, Bacillus pumilus strengthens with the increase of its MW(molecular weight) and concentration.

Key words:  , chitosan oligomers; oxidation degradation; antimicrobial;