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. 2022 Jul 29;14(8):521.
doi: 10.3390/toxins14080521.

Natural Occurrence of Mycotoxins in Maize in North China

Sirui Cheng  1 , Xiaoxiao Feng  1 , Guoxin Liu  1 , Nan Zhao  1 , Jing Liu  1 , Zhimeng Zhang  1 , Nan Yang  1 , Luqi Zhou  1 , Minhao Pang  1 , Bowen Tang  1 , Jingao Dong  1 , Bin Zhao  1 , Yingchao Liu  1
Affiliations

Natural Occurrence of Mycotoxins in Maize in North China

Sirui Cheng et al. Toxins (Basel). .

Abstract

Mycotoxins seriously threaten the quality of maize seriously around the world. A total of 426 samples of maize kernel from northeast and northwest China were analyzed in this study. Ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was performed to analyze the mycotoxin contamination of maize samples. The results showed that it was contaminated by mycotoxins in maize. The average contamination levels of fumonisins, deoxynivalenol, aflatoxins, zearalenone, ochratoxin A, T-2 and HT-2 were 937, 431, 22, 27, 2 and 12 μg/kg, respectively. Concentration of mycotoxins in some samples exceeded their limit, but most were still at safe levels. The contamination level of FBs and DON were most significative. The proportion of mycotoxins exceeding the maximum limit standard was in the following order: 8.0%, 8.0%, 7.0%, 1.6%, 1.4% and 0.0%. The contamination of mycotoxins in maize varies from region to region.

Keywords: maize; mycotoxins; occurrence.

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Conflict of interest statement

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

Figures

Figure 1
Figure 1
The contamination levels of mycotoxins in maize samples from six provinces in China. (a) The contamination levels of FBs in maize samples from six provinces in China. (b) The contamination levels of AFs in maize samples from six provinces in China. (c) The contamination levels of DON in maize samples from six provinces in China. (d) The contamination levels of ZEN in maize samples from six provinces in China. (e) The contamination levels of HT-2+T-2 in maize samples from six provinces in China. (f) The contamination levels of OTA in maize samples from six provinces in China.
Figure 2
Figure 2
The Köppen–Geiger Climate Classification and mycotoxins occurrence in China.
See this image and copyright information in PMC

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