Residue Behavior of Chiral Fungicide Prothioconazole and Its Major Chiral Metabolite in Flour Product Processing

文献类型： 外文期刊

第一作者： Fang, Qingkui

作者： Fang, Qingkui;Xiao, Jinjing;Fang, Qingkui;Zheng, Kang;Zeng, Rong;Gao, Quan;Xiao, Jinjing;Liao, Min;Cao, Haiqun;Fang, Qingkui;Zheng, Kang;Zeng, Rong;Gao, Quan;Xiao, Jinjing;Liao, Min;Cao, Haiqun;Zhang, Zhaoxian;Shi, Yanhong;Duan, Jinsheng

作者机构：

关键词： prothioconazole; prothioconazole-desthio; flourproducts; processing; residue behavior; enantioselectivity

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）

ISSN： 0021-8561

年卷期： 2023 年 72 卷 1 期

页码：

收录情况： SCI

摘要： This study systematically investigates the stereoselective metabolism and residue behavior of chiral pesticide prothioconazole enantiomers during the steaming, baking, and frying of steamed buns, bread, and deep-fried dough sticks. The results show that steaming, baking, and frying can significantly promote the degradation of the prothioconazole enantiomers. In low- and high-concentration treatments, the degradation rates of prothioconazole enantiomers were over 96.0% and 45.4%, respectively, and the residual concentration of prothioconazole-desthio enantiomers was less than 32.7 mu g/kg (excluding fried processing). During the processing of steamed buns, bread, and deep-fried dough sticks, the enantiomer fraction (EF) value of the prothioconazole enantiomer was close to 0.5, and the stereoselectivity was not significant. During the processing of steamed buns (low concentration), bread (low and high concentrations), and deep-fried dough sticks (low concentration), the stereoselectivity of prothioconazole-desthio was significant, and preferential enantiomer degradation occurred. Following the analysis of 120 flour product samples, the residual risk.

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