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Behavior of field-applied triadimefon, malathion, dichlorvos, and their main metabolites during barley storage and beer processing

文献类型： 外文期刊

作者： Kong, Zhiqiang 1 ; Li, Minmin 1 ; Chen, Jieying 1 ; Gui, Yuejing 1 ; Bao, Yuming 1 ; Fan, Bei 1 ; Jian, Qiu; Francis, 1 ;

作者机构： 1.Chinese Acad Agr Sci, Key Lab Agroprod Proc, Lab Agroprod Qual Safety Risk Assessment, Inst Food Sci & Technol,Minist Agr, Beijing 100193, Peoples R China

2.Chinese Acad Agr Sci, Key Lab Agroprod Proc, Lab Agroprod Qual Safety Risk Assessment, I

关键词： Behavior;Pesticide residue;Barley;Beer;Storage;Processing factor

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

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收录情况： SCI

摘要： The behavior and fate of 3 pesticides (triadimefon, malathion, and dichlorvos) and the main metabolites (triadimenol and malaoxon) during barley storage or beer processing were assessed using a pilot-plant equipment. The residues of all products were determined using liquid chromatography coupled with tandem mass spectrometry. Field investigation of the dissipation rate kinetics for triadimefon and malathion during storage indicated that their half-life was twice as high when 5 times the recommended dosage was used. Milling had little effect on the removal of dichlorvos and malathion residues, whereas these were substantially removed when the spent grains were filtered after mashing. The calculated processing factors were all <1, indicating the residual ratios of dichlorvos and malathion were reduced during the entire process. In conclusion, storage and processing considerably reduced pesticide residue levels in barley and beer; however, greater focus needs to be paid to the toxicity of their metabolites in commercial by-products. (C) 2016 Elsevier Ltd. All rights reserved.

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