Co-occurrence of mycotoxins in stored maize from southern and southwestern Ethiopia.

IF 2.5 3区农林科学 Q2 CHEMISTRY, APPLIED Food additives & contaminants. Part B, Surveillance Pub Date : 2024-09-01 Epub Date: 2024-07-09 DOI:10.1080/19393210.2024.2372426

Birhane Atnafu, Asaminew Amare, Chemeda Abedeta Garbaba, Fikre Lemessa, Quirico Migheli, Michael Sulyok, Alemayehu Chala

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Abstract

Maize grain samples collected from 129 small-scale farmers' stores in southern and southwestern Ethiopia were analysed by LC-MS/MS for a total of 218 mycotoxins and other fungal metabolites of which 15% were regulated mycotoxins. Mycotoxins produced by Penicillium, Aspergillus, and Fusarium accounted for 31%, 17%, and 12% of the metabolites, respectively. Most of the current samples were contaminated by masked and/or emerging mycotoxins with moniliformin being the most prevalent one, contaminating 93% of the samples. Each sample was co-contaminated by 3 to 114 mycotoxins/fungal metabolites. Zearalenone, fumonisin B1, and deoxynivalenol were the dominant mycotoxins, occurring in 78%, 61%, and 55% of the samples with mean concentrations of 243, 429, and 530 µg/kg, respectively. The widespread co-occurrence of several mycotoxins in the samples may pose serious health risks due to synergistic/additional effects.

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埃塞俄比亚南部和西南部储藏玉米中霉菌毒素的共存。

通过 LC-MS/MS，对从埃塞俄比亚南部和西南部 129 个小型农户仓库采集的玉米谷物样本进行了分析，共检测出 218 种霉菌毒素和其他真菌代谢物，其中 15%为受管制的霉菌毒素。青霉、曲霉和镰刀菌产生的霉菌毒素分别占代谢物的 31%、17% 和 12%。目前，大多数样本都受到掩蔽霉菌毒素和/或新出现的霉菌毒素的污染，其中以单甲状腺素的污染最为普遍，占样本总数的 93%。每个样本都同时受到 3 至 114 种霉菌毒素/真菌代谢物的污染。玉米赤霉烯酮、伏马菌素 B1 和脱氧雪腐镰刀菌烯醇是主要的霉菌毒素，分别出现在 78%、61% 和 55% 的样本中，平均浓度分别为每公斤 243、429 和 530 微克。样本中广泛同时出现多种霉菌毒素，可能会产生协同或附加效应，严重危害人体健康。

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 & contaminants. Part B, Surveillance 农林科学-毒理学

CiteScore

5.30

自引率

10.30%

发文量

审稿时长

2.7 months

期刊介绍： Food Additives & Contaminants: Part B publishes surveillance data indicating the presence and levels of occurrence of designated food additives, residues and contaminants in foods, food supplements and animal feed. Data using validated methods must meet stipulated quality standards to be acceptable and must be presented in a prescribed format for subsequent data-handling. Food Additives & Contaminants: Part B restricts its scope to include certain classes of food additives, residues and contaminants. This is based on a goal of covering those areas where there is a need to record surveillance data for the purposes of exposure and risk assessment. The scope is initially restricted to: Additives - food colours, artificial sweeteners, and preservatives; Residues – veterinary drug and pesticide residues; Contaminants – metals, mycotoxins, phycotoxins, plant toxins, nitrate/nitrite, PCDDs/PCFDs, PCBs, PAHs, acrylamide, 3-MPCD and contaminants derived from food packaging. Readership: The readership includes scientists involved in all aspects of food safety and quality and particularly those involved in monitoring human exposure to chemicals from the diet. Papers reporting surveillance data in areas other than the above should be submitted to Part A . The scope of Part B will be expanded from time-to-time to ensure inclusion of new areas of concern.