Degradation of ochratoxin A in aqueous solutions by electron beam irradiation
Degradation of ochratoxin A in aqueous solutions by electron beam irradiation
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DOI：
10.1007/s10967-015-4086-5
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发表时间：
2015-03
影响因子：
1.6
通讯作者：
Chunhong Peng;Yang Ding;Fengping An;Li Wang;Shuying Li;Ying Nie;Linyan Zhou;Yaru Li;Changgang Wang;Shurong Li
中科院分区：
文献类型：
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作者：
Chunhong Peng;Yang Ding;Fengping An;Li Wang;Shuying Li;Ying Nie;Linyan Zhou;Yaru Li;Changgang Wang;Shurong Li
研究了电子束辐照对赭曲霉毒素A的降解作用。结果表明，在水中，EB辐射降解OTA的效果明显优于乙腈和甲醇-水（60：40，v/v）体系。OTA降解效率随辐照剂量的增加而增加，随底物浓度的增加而降低。碱性条件（pH 9.99）和H2 O2（<0.1%v/v）的加入显著提高了OTA的降解效率。OTA降解过程符合准一级动力学模型。此外，降解产物进行了初步分析，采用液相色谱-质谱。
The electron beam (EB) irradiation-induced degradation of ochratoxin A (OTA) was investigated in this study. Results showed that EB irradiation is much more effective in degrading OTA in water than that in acetonitrile and methanol–water (60:40, v/v). OTA degradation efficiency increased in an irradiation dose-dependent manner and decreased in the increasing of substrate concentration. The alkaline conditions (pH 9.99) and the addition of H2O2(<0.1 % v/v) remarkably improved the OTA degradation efficiency. OTA degradation process agreed well with the pseudo first-order kinetic model. Furthermore, the degradation products were preliminary analyzed using liquid chromatography–mass spectrometry.