Monitoring and analysis of 16 mycotoxins in corn samples from Heilongjiang Province in 2022
Objective To understand the situation of corn mycotoxins contamination in Heilongjiang Province,and to analyze the causes of pollution and propose prevention and control measures.Methods Among the 473 corn samples were collected from various regions in Heilongjiang Province,and 16 mycotoxins,including aflatoxins,fumonisins,deoxynivalenol and their metabolites,zearalenone,ochratoxin A,alternariol,alternariol monomethyl ether,tentoxin,and tenuazonic acid,were detected in the corn samples.The detection and quantification were carried out using ultra-high performance liquid chromatography tandem mass spectrometry isotope internal standard method.Results All samples were detected with mycotoxins,the detection rate was 100％,and each sample was contaminated by one or more mycotoxins.The detection rate of 16 mycotoxins ranged from 0.21％to 98.31％.The average contamination level ranged from 0.67 μ g/kg-259.19 μ g/kg.Three types of toxins exceeded the standard,with exceeding rates of deoxynivalenol(2.54％,12/473),zearalenone(4.02％,19/473),and fumonisins(2.54％,12/473),respectively.The samples exceeding the standard were distributed in Mudanjiang,Shuangyashan,Jixi,Harbin,and Qiqihar.Conclusion Corn in Heilongjiang Province is contaminated by a combination of mycotoxins.It is necessary to strengthen monitoring from multiple links and adopt a variety of ways and control measures to reduce corn contamination.
万方数据
维普
