Yang Kai, Li Ke, Pan Lihong, Luo Xiaohu, Xing Jiali, Wang Jing, Wang Li, Wang Ren, Zhai Yuheng, Chen Zhengxing
National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China.
Toxins (Basel). 2020 Feb 24;12(2):138. doi: 10.3390/toxins12020138.
Zearalenone (ZEN) and ochratoxin A (OTA) are key concerns of the food industry because of their toxicity and pollution scope. This study investigated the effects of ozone and electron beam irradiation (EBI) on the degradation of ZEN and OTA. Results demonstrated that 2 mL of 50 μg/mL ZEN was completely degraded after 10 s of treatment by 2.0 mg/L ozone. The degradation rate of 1 μg/mL ZEN by 16 kGy EBI was 92.76%. Methanol was superior to acetonitrile in terms of degrading ZEN when the irradiation dose was higher than 6 kGy. The degradation rate of 2 mL of 5 μg/mL OTA by 50 mg/L ozone at 180 s was 34%, and that of 1 μg/mL OTA by 16 kGy EBI exceeded 90%. Moreover, OTA degraded more rapidly in acetonitrile. Ozone performed better in the degradation of ZEN, whereas EBI was better for OTA. The conclusions provide theoretical and practical bases for the degradation of different fungal toxins.
玉米赤霉烯酮（ZEN）和赭曲霉毒素A（OTA）因其毒性和污染范围而成为食品行业关注的重点。本研究调查了臭氧和电子束辐照（EBI）对ZEN和OTA降解的影响。结果表明，2.0 mg/L的臭氧处理10 s后，2 mL浓度为50 μg/mL的ZEN被完全降解。16 kGy的EBI对1 μg/mL ZEN的降解率为92.76%。当辐照剂量高于6 kGy时，甲醇在降解ZEN方面优于乙腈。50 mg/L的臭氧在180 s时对2 mL浓度为5 μg/mL OTA的降解率为34%，16 kGy的EBI对1 μg/mL OTA的降解率超过90%。此外，OTA在乙腈中的降解速度更快。臭氧在ZEN的降解方面表现更好，而EBI对OTA的降解效果更佳。这些结论为不同真菌毒素的降解提供了理论和实践依据。
