期刊
FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE
卷 11, 期 1, 页码 64-74出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/19393210.2017.1408698
关键词
Grain contamination; toxigenic fungi; mycotoxin; liquid chromatography
资金
- Norwegian Agency for Development Cooperation (NORAD) through the CSA-NORHED project [ETH-13/0016]
- Center for Analytical Chemistry, University of Natural Resources and Life Sciences, Vienna
The natural occurrence of fungi, mycotoxins and fungal metabolites was investigated in 100 samples of maize grains collected from south and southwestern Ethiopia in 2015. The maize samples were contaminated by Fusarium, Aspergillus and Penicillium species. Using liquid chromatography tandem mass spectrometry 127secondary metabolites were analysed. Zearalenone was the most prevalent mycotoxin, occurring in about 96% of the samples. Zearalenone sulfate was the second most prevalent, present in 81% of the samples. Fumonisin B1 was detected in 70% of the samples with a mean level of 606 g kg(-1) in positive samples, while FB2, FB3 and FB4 were detected in 62%, 51% and 60% of the maize samples with mean levels of 202, 136 and 85 g kg(-1), respectively. Up to 8% of the samples were contaminated with aflatoxins, with a maximum level of aflatoxin B1 of 513 g kg(-1). Results were higher than earlier reports for maize from Ethiopia.
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