Pesticide multi-residues in Dendrobium officinale Kimura et Migo: Method validation, residue levels and dietary exposure risk assessment
文献类型： 外文期刊
作者： Xu, Zhenlan 1 ; Li, Lingxiangyu 2 ; Xu, Yi 2 ; Wang, Shanshan 1 ; Zhang, Xiaoxia 2 ; Tang, Tao 1 ; Yu, Jianzhong 1 ; Zhao 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Minist Agr & Rural Affairs, Key Lab Pesticide Residue Detect, Hangzhou 310021, Peoples R China
2.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China
3.Core Faceil Ctr, CAS Ctr Excellence Mol Plant Sci, Shanghai 200000, Peoples R China
关键词： Dendrobium officinale Kimura et Migo; Graphitized multi-wall carbon nanotubes; Pesticide multi-residues; Dietary exposure risk assessment
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： 2021 年 343 卷
页码：
收录情况： SCI
摘要： Dendrobium officinale Kimura et Migo (D. officinale) is a dual-use plant with both botanical medicine and food applications, drawing increasing attentions. Pesticides are inevitably applied on D. officinale in commercial artificial-sheltered cultivation, yet little is known about pesticide residue levels in D. officinale. A modified high through-put QuEChERS method coupled with HPLC-MS/MS was developed and validated to detect 76 pesticides in D. officinale. Graphitized multi-wall carbon nanotubes (g-MWCNTs) was selected as the clean-up sorbent, showing relative weak affinity to triazole fungicide having planar structure in their molecular and low matrix effects of pesticides in D. officinale samples compared to MWCNTs and pesticarb. The validated method was applied to analyze pesticide residues in 86 real D. officinale samples collected from three main producing provinces. 43 different pesticides were detected with highest residue of 6.11 mg/kg for dimethomorph. Given possible health risks related to pesticide residues, accordingly, risk assessment of human exposure to pesticides via intake of D. officinale was thus performed, indicating that the pesticide residue in fresh or dry D. officinale would not cause potential risk to human health either in the long-term or short-term. This work improved our understanding of potential exposure risk of pesticide multi-residues in D. officinale.
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