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

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 21days. AFB1 and AFB2 were extract...

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Published in:Saudi journal of biological sciences 2015-03, Vol.22 (2), p.176-180
Main Authors: Lai, Xianwen, Zhang, He, Liu, Ruicen, Liu, Chenglan
Format: Article
Language:English
Subjects:
Aflatoxin
aflatoxin B1
aflatoxin B2
Aflatoxins
Aspergillus flavus
China
fluorescence
High performance liquid chromatography
Microbiology
Original
Rice
Rice grain
toxigenic strains
الافلاتوكسينات
علم الأحياء الدقيقة
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creator Lai, Xianwen
Zhang, He
Liu, Ruicen
Liu, Chenglan
description 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 21days. 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 124101μgkg−1 for AFB1 and from not detected to 10329μgkg−1 for AFB2. The mean yields of these isolates were 5884μgkg−1 for AFB1 and 1968μgkg−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.
doi_str_mv 10.1016/j.sjbs.2014.09.013
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subjects Aflatoxin
aflatoxin B1
aflatoxin B2
Aflatoxins
Aspergillus flavus
China
fluorescence
High performance liquid chromatography
Microbiology
Original
Rice
Rice grain
toxigenic strains
الافلاتوكسينات
علم الأحياء الدقيقة
title Potential for aflatoxin B1 and B2 production by Aspergillus flavus strains isolated from rice samples
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