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Efficacy of Deoxynivalenol Detoxification by Ozone Treatment in Wheat and Prediction of Degradation Products

WANG Li, LUO Yingpeng, LUO Xiaohu, WANG Ren, LI Yongfu, LI Yanan, SHAO Huili, CHEN Zhengxing   

  1. School of Food Science and Technology, National Engineering Laboratory for Cereal Fermentation Technology,
    State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
  • Online:2016-09-25 Published:2016-09-26
  • Contact: CHEN Zhengxing

Abstract:

In this study, we used ozone to reduce deoxynivalenol (DON) in contaminated wheat, and the ozonation
products were deduced using ultra performance liquid chromatography quadrupole time-of-flight mass spectrometry
(UPLC Q-TOF MS). The results showed that DON content in whole wheat flour decreased more quickly than in wheat kernels.
For wheat with a moisture content of 20.10%, DON content was reduced from 3.89 mg/kg to 0.83 mg/kg after 100 mg/L
ozone treatment for 60 min. The kinetic model constants with different ozone concentrations showed the decreasing order of
k100 mg/L>k75 mg/L>k50 mg/L>k25 mg/L, which was consistent with the experimental results. According to the mass spectral and ion
fragmentation information from UPLC Q-TOF, possible ozonation products were proposed. The m/z of the major products
were 344.948 1, 329.205 0, 311.191 8, 311.190 7 and 346.240 4, respectively.

Key words: deoxynivalenol, ozone, kinetic, degradation products

CLC Number: