Multiresidue analysis of pesticides and dietary risk assessment of Coix seed by UPLC-MS/MS

文献类型： 外文期刊

第一作者： Chen, Yangxin

作者： Chen, Yangxin;Huang, Min;Lu, Ping;Song, Bangyan;Chen, Jing

作者机构：

关键词： UPLC-MS/MS; QuEChERS; Pesticide residues; Fungicide; Coix seed; Risk assessment

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.6； 五年影响因子：4.6 ）

ISSN： 0889-1575

年卷期： 2025 年 140 卷

页码：

收录情况： SCI

摘要： The Coix seed is a plant known for both its medicinal and nutritional properties. However, research on controlling diseases and pests affecting Coix seeds remains limited. In this study, a multi-residue analysis and dietary risk assessment method for 28 fungicides in Coix seed was developed using UPLC-MS/MS combined with an enhanced QuEChERS approach. Pesticide residues were analyzed in various types of Coix seed, with three pesticides being detected in the samples. Azoxystrobin had the highest detection rate at 8.8 %, followed by prothioconazole at 7.4 %, and thiophanate-methyl at 1.5 %. The detection rates for big Coix seed (ACS), small Coix seed (BCS), glutinous Coix seed (CCS), and red Coix seed (DCS) were found to be 12.5 %, 27.5 %, 6.7 % and 19.2 % respectively. Importantly, all pesticide residue concentrations were below maximum residue levels (MRL). Dietary risk assessments indicated that the risk posed by pesticide residues is low and unlikely to pose a threat to human health in the short term. This study provides technological recommendations to improve the scientific and rational monitoring and management of pesticide applications.

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