Dissipation and residue of triadimefon in Rosa roxburghii.

IF 2.3 3区农林科学 Q2 CHEMISTRY, APPLIED Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment Pub Date : 2024-08-01 Epub Date: 2024-06-14 DOI:10.1080/19440049.2024.2357351

Lei Han, Zhaochun Jiang, Xuefei Zhang, Xiaomao Wu

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Abstract

Rosa roxburghii (R. roxburghii) is a unique, edible, medicinal fruit rich in vitamin C found in Southwest China. Triadimefon (TDF) is a triazole fungicide that is widely used to control powdery mildew in R. roxburghii. To assess the safety of TDF in R. roxburghii, an LC-MS/MS method was developed for the simultaneous quantification of TDF and its major metabolite, triadimenol (TDN) in R. roxburghii. Both TDF and TDN showed high correlation coefficients (>0.999) for the solvent- and matrix-matched calibrations. The recovery rates of TDF and TDN in R. roxburghii ranged from 90.18% to 100.42%, with a relative standard deviation (RSD) of 1.25%-9.22%. The limit of quantification (LOQ) was 0.01 mg·kg^-1. The half-life of TDF in R. roxburghii was between 2.74 and 3.07 days, with terminal residues ranging from < LOQ to 1.84 mg·kg^-1. Recommended maximum residue limits (MRLs) and safe pre-harvest intervals (PHIs) for TDF in R. roxburghii were 0.5 mg·kg^-1 and 21 days, respectively. This study provides essential data for TDF's safe and judicious use in R. roxburghii production.

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三唑酮在 Rosa roxburghii 中的消散和残留。

蔷薇（Rosa roxburghii）是中国西南地区一种独特的食用药用水果，富含维生素 C。三唑酮（TDF）是一种三唑类杀菌剂，被广泛用于控制蔷薇白粉病。为了评估 TDF 在罗布麻中的安全性，研究人员开发了一种 LC-MS/MS 方法，用于同时定量检测 TDF 及其主要代谢产物三唑醇（TDN）在罗布麻中的含量。在溶剂和基质匹配的定标中，TDF和TDN均显示出较高的相关系数（>0.999）。TDF 和 TDN 在 R. roxburghii 中的回收率为 90.18% 至 100.42%，相对标准偏差（RSD）为 1.25% 至 9.22%。定量限（LOQ）为 0.01 mg-kg-1。TDF 在 R. roxburghii 中的半衰期为 2.74 至 3.07 天，最终残留量为 LOQ 至 1.84 mg-kg-1。建议的 TDF 在 R. roxburghii 中的最大残留限量（MRLs）和收获前安全间隔期（PHIs）分别为 0.5 mg-kg-1 和 21 天。这项研究为在 R. roxburghii 生产中安全、合理地使用 TDF 提供了重要数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment CHEMISTRY, APPLIED-FOOD SCIENCE & TECHNOLOGY

CiteScore

7.40

自引率

6.90%

发文量

136

审稿时长

3 months

期刊介绍： Food Additives & Contaminants: Part A publishes original research papers and critical reviews covering analytical methodology, occurrence, persistence, safety evaluation, detoxification and regulatory control of natural and man-made additives and contaminants in the food and animal feed chain. Papers are published in the areas of food additives including flavourings, pesticide and veterinary drug residues, environmental contaminants, plant toxins, mycotoxins, marine biotoxins, trace elements, migration from food packaging, food process contaminants, adulteration, authenticity and allergenicity of foods. Papers are published on animal feed where residues and contaminants can give rise to food safety concerns. Contributions cover chemistry, biochemistry and bioavailability of these substances, factors affecting levels during production, processing, packaging and storage; the development of novel foods and processes; exposure and risk assessment.