Stereoselective Analysis and Degradation of Pyrisoxazole in Cabbage, Pakchoi, and Pepper by Liquid Chromatography Tandem Mass Spectrometry

文献类型: 外文期刊

第一作者: Yang, Xuewei

作者: Yang, Xuewei;Sun, Yuhan;Wang, Lidong;Zhao, Changshan;Qi, Peipei;Wang, Xiangyun;Wang, Zhiwei;Xu, Xiahong;Xu, Hao;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Wang, Xiangyun;Wang, Zhiwei;Xu, Xiahong;Xu, Hao;Wang, Qiang;Wang, Xinquan;Qi, Peipei;Wang, Xiangyun;Wang, Zhiwei;Xu, Xiahong;Xu, Hao;Wang, Qiang;Wang, Xinquan

作者机构:

关键词: pyrisoxazole;enantioselective degradation;vegetable;LC-MS/MS

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Pyrisoxazole is a chiral fungicide with high sterilizing activity to the plant pathogenic bacteria and thus can be used for protecting the vegetables from gray mold, powdery mildew, and brown rot. The present work aimed to explore its stereoselective degradation in cabbage, pakchoi, and pepper samples. The enantioseparation and analysis on chiral column Lux Cellulose-3 based on liquid chromatography tandem mass spectrometry was developed coupled to the QuEChERS method. The recoveries of the stereoisomers in various vegetables ranged from 72.6 to 124% with RSD lower than 5.0%. Enantioselective dissipation of pyrisoxazole in vegetables displayed that (-)-A-pyrisoxazole was preferentially degraded versus (+)-A-pyrisoxazole hi all the vegetables. (+)-B-pyrisoxazole was preferentially degraded in cabbage, while there was no obvious enantioselectivity in pakchoi and pepper. Meanwhile, stereoselectivity analysis demonstrated that (+/-)-A-pyrisoxazole was degraded faster than (+/-)-B-pyrisoxazole in pakchoi and pepper, while there was no stereoselective degradation in cabbages.

分类号: R15`S

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