Enantioselectivity and residue analysis of cycloxaprid and its metabolite in the pile and fermentation processing of Puer tea by ultraperformance liquid chromatography-high-resolution mass spectrometry

文献类型： 外文期刊

第一作者： Liu, Hongcheng

作者： Liu, Hongcheng;Tian, Hen;Lin, Tao;Li, Ji;Tian, Hen;Li, Ji;Huang, Xiangzhong;Jiang, MingMing;Jiang, MingMing

作者机构：

关键词： cycloxaprid; enantioselectivity; metaboliteLC-HFMS; puer tea processing

期刊名称：FOOD SCIENCE & NUTRITION （ 影响因子：3.553； 五年影响因子：3.634 ）

ISSN： 2048-7177

年卷期：

页码：

收录情况： SCI

摘要： The residues of cycloxaprid enantiomers and metabolites are investigated by ultraperformance liquid chromatography-high-resolution mass spectrometry (UPLC-HRMS) during raw and ripen Puer tea processing. A Chiralpak AG column with chiral stationary phase of amylose tris (3-chloro-5-methylphenylcarbamate) is succeed to separate the 1R, 2S-cycloxaprid, 1S, 2R-cycloxaprid, and their metabolite, which is identified as nitrylene-imidazolidine. It is not conversed 1R, 2S -cycloxaprid into 1S,2R-cycloxaprid during Puer tea processing. The estimated half-lives of the 1R,2S-cycloxaprid and 1S,2R-cycloxaprid are 0.97 and 1.1 h, respectively, and 1R,2S-cycloxaprid decreases more quickly than the 1S,2R-cycloxaprid. During raw Puer tea processing, the half-lives of IR, 2S-cycloxaprid and 15, 2R-cycloxaprid are 1.68 h and 1.77 h, but the residue is still detected even if it is over 730 day. However, the half-lives of 1R,2S-cycloxaprid and 1.5,2R-cycloxaprid are 0.60 day and 0.63 day during ripen tea processing. The amounts of metabolite are more in raw tea than in ripen tea; the terminal residues are still detected until 730 days during raw tea. A significant enantioselectivity of 1R, 2S-cycloxaprid and 1S, 2R-cycloxaprid is observed during raw tea or ripen tea processing. The degration result shows the enantioselectivity of cycloxaprid in raw or ripen Puer tea processing.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序