Potential for aflatoxin B1 and B2 production by Aspergillus flavus strains isolated from rice samples

Saudi Journal of Biological Sciences
Xianwen LaiChenglan Liu

Abstract

In this study, we investigated the potential for aflatoxin B1 (AFB1) and B2 (AFB2) production in rice grain by 127 strains of Aspergillus flavus isolated from rice grains collected from China. These strains were inoculated onto rice grains and incubated at 28 °C for 21 days. AFB1 and AFB2 were extracted and quantified by high-performance liquid chromatography coupled with fluorescence detection. Among the tested strains, 37% produced AFB1 and AFB2 with levels ranging from 175 to 124 101 μg kg(-1) for AFB1 and from not detected to 10 329 μg kg(-1) for AFB2. The mean yields of these isolates were 5884 μg kg(-1) for AFB1 and 1968 μg kg(-1) for AFB2. Overall, most of the aflatoxigenic strains produced higher levels of AFB1 than AFB2 in rice. The obtained information is useful for assessing the risk of aflatoxin contamination in rice samples.

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Citations

Jan 31, 2017·Journal of Food Science·Xiang Dong SunHong Shan
Mar 6, 2018·Food Additives & Contaminants. Part B, Surveillance·Nouara Ait MimouneAmar Riba
Dec 22, 2015·Mycotoxin Research·Iamtaweejaroen PanrapeeMahakarnchanakul Warapa
Jul 28, 2020·Journal of Fungi·Kamel A Abd-ElsalamAlexander Yu Vasil'kov
Jun 18, 2020·Frontiers in Microbiology·Anu Anupma, Jyoti Prakash Tamang
Sep 1, 2018·Comprehensive Reviews in Food Science and Food Safety·Nudrat Aisha AkramMuhammad Ashraf

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