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Degradation Efficiency of Deoxynivalenol by Aspergillus oryzae As-W.6

WU Yu, WANG Kaiping, TANG Zhengjiang, TANG Fei, LIU Guoqing*   

  1. College of Food Science and Engineering, Hefei University of Technology, Hefei 230009, China
  • Online:2016-09-15 Published:2016-09-22

Abstract:

This research work was conducted to investigate the degradation of deoxynivalenol (DON) by Aspergillus oryzae
As-W.6, which was isolated and preserved in our laboratory. Results showed the degradation rate of DON at all initial
concentrations investigated was greater than 35% after 7 d fermentation by strain As-W.6 and reached higher than 90%
with fermentation time up to 14 d. Moreover, the strain could degrade more than 70% of DON with the enzyme produced
by it. HPLC-MS analysis revealed that the relative molecular mass of DON was decreased from 295.1 to 281.2 after the
degradation, a decrease of 13.9, suggesting that DON was degraded into another substance by As-W.6.

Key words: deoxynivalenol, Aspergillus oryzae, biodegradation, degradation products

CLC Number: