Temporal-spatial analysis of cyromazine in cowpea using liquid chromatography-mass spectrometry coupled with mass spectrometry imaging

文献类型： 外文期刊

第一作者： Tang, Xuemei

作者： Tang, Xuemei;Huang, Congling;Huang, Jianxiang;Wang, Jiale;Chen, Zhiting;Chen, Yan;Xiao, Zemiao;Wan, Kai

作者机构：

关键词： Cyromazine; cowpea; mass spectrometry imaging; pesticide residue

期刊名称：FOOD QUALITY AND SAFETY （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 2399-1399

年卷期： 2023 年 7 卷

页码：

收录情况： SCI

摘要： Background Cowpea (Vigna unguiculata L. Walp.) is an economically important crop. It is nutritious and popular with consumers. However, it has been listed as one of the agricultural products of critical concern about safety in China and cyromazine is the major risk factor. Objectives This study analyzed the dissipation and permeation kinetics of cyromazine residue in cowpea, to offer a scientific basis for the rational use of pesticide and ensure the safety of agricultural products. Materials and methods The dissipation and residue level of the systemic insecticide cyromazine on cowpea under field and stored conditions were investigated. Subsequently, the spatial distribution of cyromazine was studied using mass spectrometry imaging to visualize the dynamic processes of permeation and migration in the tissues post pesticide application. Results The dissipation processing of cyromazine in cowpea was shown to follow the first-order kinetics and half-life was 7.76 d in the field. In cowpea, the permeation and migration rate of cyromazine was faster than that in kidney beans and accumulation was mainly in the pulp. It is not safe to apply cyromazine to cowpeas with reference to the application method on kidney beans. Conclusions These findings present vital data for the determination of risks linked with cowpea consumption and pesticide intake.

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