Evaluation of transfer rates of multiple pesticides from green tea into infusion using water as pressurized liquid extraction solvent and ultra-performance liquid chromatography tandem mass spectrometry

文献类型: 外文期刊

第一作者: Chen, Hongping

作者: Chen, Hongping;Liu, Xin;Lu, Chengyin;Chen, Hongping;Pan, Meiling;Liu, Xin;Lu, Chengyin;Chen, Hongping;Liu, Xin;Lu, Chengyin

作者机构:

关键词: Green tea;Pesticides;Transfer rate;Pressurized liquid extraction;Liquid chromatography tandem mass spectrometry

期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )

ISSN: 0308-8146

年卷期: 2017 年 216 卷

页码:

收录情况: SCI

摘要: Pesticide residues could be transferred from tea into its infusion and by-products, and subsequently consumed by humans. Extra extraction conditions may induce more pesticide leaching into the infusion and by-products of tea and cause greater damage to humans. The aim of this study is to evaluate the infusion of multiple pesticides from green tea into hot water via pressurized liquid extraction. The results showed that pesticides in spiked samples generally have higher leaching (0.8-45.0%) than those in the positive samples. There was a marked rise of transfer rates when water solubility increased from 20 mg L-1 to 450 mg L-1 and LogKow decreased from 6 to 4. All pesticides had more leaching into hot water using pressurized liquid extraction than traditional tea brewing. This study helps in risk assessment of pesticide residues and in the formulation of maximum residue levels (MRLs) in tea and its by-products. (C) 2016 Elsevier Ltd. All rights reserved.

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