Natural Occurrence of Regulated and Emerging Mycotoxins in Wheat Grains and Assessment of the Risks from Dietary Mycotoxins Exposure in China
文献类型： 外文期刊
作者： Ji, Xiaofeng 1 ; Jin, Canghong 2 ; Xiao, Yingping 1 ; Deng, Meihua 1 ; Wang, Wen 1 ; Lyu, Wentao 1 ; Chen, Jiapeng 2 ; Li, Rui 1 ; Li, Yan 3 ; Yang, Hua 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
2.Hangzhou City Univ, Sch Comp & Comp Sci, Hangzhou 310015, Peoples R China
3.Zhejiang Univ, Inst Prevent Vet Sci, Coll Anim Sci, Dept Vet Med, Hangzhou 310058, Peoples R China
关键词： wheat grains; regulated mycotoxins; emerging mycotoxins; dietary exposure
期刊名称：TOXINS （ 影响因子：4.2； 五年影响因子：4.7 ）
ISSN：
年卷期： 2023 年 15 卷 6 期
页码：
收录情况： SCI
摘要： Wheat grains are susceptible to contamination with various natural mycotoxins including regulated and emerging mycotoxins. This study surveyed the natural presence of regulated mycotoxins, such as deoxynivalenol (DON) and zearalenone (ZEN), and emerging mycotoxins such as beauvericin (BEA), enniatins (ENNs such as ENA, ENA1, ENB, ENB1) and Alternaria mycotoxins (i.e., alternariol monomethyl ether (AME), alternariol (AOH), tenuazonic acid (TeA), tentoxin (TEN), and altenuene (ALT)) in wheat grains randomly collected from eight provinces across China in 2021. The results revealed that each wheat grain sample was detected with at least one type of mycotoxin. The detection rates of these mycotoxins ranged from 7.1% to 100%, with the average occurrence level ranging from 1.11 to 921.8 & mu;g/kg. DON and TeA were the predominant mycotoxins with respect to both prevalence and concentration. Approximately 99.7% of samples were found to contain more than one toxin, and the co-occurrence of ten toxins (DON + ZEN + ENA + ENA1 + ENB + ENB1 + AME + AOH + TeA + TEN) was the most frequently detected combination. The dietary exposure to different mycotoxins among Chinese consumers aged 4-70 years was as follows: 0.592-0.992 & mu;g/kg b.w./day for DON, 0.007-0.012 & mu;g/kg b.w./day for ZEN, 0.0003-0.007 & mu;g/kg b.w./day for BEA and ENNs, 0.223-0.373 & mu;g/kg b.w./day for TeA, and 0.025-0.041 & mu;g/kg b.w./day for TEN, which were lower than the health-based guidance values for each mycotoxin, with the corresponding hazard quotient (HQ) being far lower than 1, implying a tolerable health risk for Chinese consumers. However, the estimated dietary exposure to AME and AOH was in the range of 0.003-0.007 & mu;g/kg b.w./day, exceeding the Threshold of Toxicological Concern (TTC) value of 0.0025 & mu;g/kg b.w./day, demonstrating potential dietary risks for Chinese consumers. Therefore, developing practical control and management strategies is essential for controlling mycotoxins contamination in the agricultural systems, thereby ensuring public health.
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