A Novel "Mobile Phase Braking Drift Technique" Utilized for the Enantioselective Residual Analysis of Cyflumetofen and the Investigation of Its Enantiomeric Migration during Tea Growth, Processing, and Brewing
文献类型： 外文期刊
作者： Ning, Yating 1 ; Wang, Xiangyun 2 ; Hu, Yue 1 ; Zhao, Yan 1 ; Wang, Yaqi 1 ; Luo, Fengjian 1 ; Chen, Liezhong 2 ; Zhang, Xinzhong 1 ;
作者机构： 1.Chinese Acad Agr Sci, Tea Res Inst, Hangzhou 310008, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Zhejiang, Peoples R China
3.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China
4.Hangzhou Hope Agr Technol Co Ltd, Hangzhou 310008, Peoples R China
5.Tianjin Agr Univ, Coll Hort & Landscape, Tianjin 300384, Peoples R China
6.Minist Agr & Rural Affairs, Key Lab Tea Qual & Safety Control, Hangzhou 310008, Peoples R China
关键词： tea; cyflumetofen; enantioseparation; enantioselective degradation; reversed-phase ultrahigh liquidchromatography tandem mass spectrometry
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.2； 五年影响因子：6.4 ）
ISSN： 0021-8561
年卷期： 2025 年 73 卷 19 期
页码：
收录情况： SCI
摘要： Cyflumetofen (CYF) enantiomers were first separated by reversed-phase liquid chromatography. The enantioselectivity during tea growth, processing, and brewing was studied by a reversed-phase ultrahigh performance liquid chromatography tandem mass spectrometry (RP-UHPLC-MS/MS) method. The linearity ranges of CYF enantiomers in different matrix-matched calibration curves were from 0.0025 to 1.0 mg/L, with satisfactory correlation coefficients (R 2 >= 0.9985). The average recoveries of (+)-CYF and (-)-CYF were 76.3-116.9 and 82.9-116.9%, respectively. The limits of quantification (LOQs) for the two enantiomers were 2.5 mu g/kg in fresh tea leaves and tea, and 0.25 mu g/L in tea infusion. The dissipation half-life (t 1/2) of (+)-CYF and (-)-CYF during fresh tea growth was 1.04 days and 1.23 days, respectively. After processing the fresh tea leaves into green tea (black tea), the processing factors (PFs) of (+)-CYF and (-)-CYF were 0.15-0.26 (0.18-0.61) and 0.11-0.26 (0.20-0.60), respectively. The total leaching rates (TLRs) of (+)-CYF and (-)-CYF from green tea (black tea) to tea infusion were 2.7% (4.2%) and 2.1% (4.9%). The enantiomeric fractions (EFs) of CYF migration during tea growth, processing, and brewing were 0.48-0.50, 0.44-0.56, and 0.47-0.57, respectively, indicating no enantioselectivity.
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