FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (2): 186-192.

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Study on Producing Chitin From Aspergillus niger by Electrolysis

 CAO  Jian, DAI  Yang-Yong, LI  Lang, WANG  Zhong-Tai   

  1. 1.School of Biological Engineering, Henan University of Technology, Zhengzhou 450052, China; 2.Food College, Shandong Agricultural University, Taian 271018, China
  • Online:2006-02-15 Published:2011-09-05

Abstract: Chitin was prepared by electrolysis from mycelia through small-scale fermentation of Aspergillus niger in this paper, while the obtained chitin was further deacetylated into chitosan by alkaline. Through single-factor experiments and orthogonal experiment, the effects of some factors on the degree of deacetylation, yield and molecular weight of the chitosan product were studied. The optimized conditions for preparing chitin product from A. niger mycelia by electrolysis were as follows: time of electrolysis 1.25h, concentration of NaOH 3%, voltage 8V and ratio of solvent to meal 12:1. It is found that preparing chitin from the A. niger by electrolysis is practically feasible.

Key words:  , Aspergillus niger; electrolysis; chitin; chitosan;