| Literature DB >> 20627118 |
Amar Riba1, Noureddine Bouras, Salim Mokrane, Florence Mathieu, Ahmed Lebrihi, Nasserdine Sabaou.
Abstract
Wheat and its derivatives are a very important staple food for North African populations. The aim of this study was to analyze populations of Aspergillus section Flavi from local wheat based on aflatoxins (AFs), cyclopiazonic acid (CPA) and sclerotia production, and also to evaluate AFs-contaminated wheat collected from two different climatic regions in Algeria. A total of 108 samples of wheat were collected during the following phases: pre-harvest, storage in silos and after processing. The results revealed that among the Aspergillus species isolated, those belonging to section Flavi were predominant. Of the 150 strains of Aspergillus section Flavi isolated, 144 were identified as Aspergillus flavus and 6 as Aspergillus tamarii. We showed that 72% and 10% of the A. flavus strains produced AFs and CPA, respectively. Among the 150 strains tested, 60 produced amounts of AFB1 ranging from 12.1 to 234.6 microg/g of CYA medium. Also, we showed that most strains produced large sclerotia. AFB1was detected by HPLC in 56.6% of the wheat samples and derived products (flour, semolina and bran) with contamination levels ranging from 0.13 to 37.42 microg/kg. Copyright (c) 2010 Elsevier Ltd. All rights reserved.Entities:
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Year: 2010 PMID： 20627118 DOI： 10.1016/j.fct.2010.07.005
Source DB: PubMed Journal: Food Chem Toxicol ISSN： 0278-6915 Impact factor: 6.023