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dc.contributor.authorMassi, Fernanda Pelisson; et. al.-
dc.contributor.otherPT_Br
dc.date.accessioned-
dc.date.accessioned2022-08-01T19:39:57Z-
dc.date.availablePT_Br
dc.date.available2022-08-01T19:39:57Z-
dc.date.copyright-
dc.date.issued2014-
dc.identifierPT_Br
dc.identifier.citationInternational Journal of Food Microbiology, New York, v.186, p.14-21, março/2014.pt_BR
dc.identifier.urihttp://repositorio.ital.sp.gov.br/jspui/handle/123456789/378-
dc.description.abstractThe exploitation of the Brazil nut is one of the most important activities of the extractive communities of the Amazon rainforest. However, its commercialization can be affected by the presence of aflatoxins produced by fungi, namely Aspergillus section Flavi. In the present study, we investigated a collection of Aspergillus nomius strains isolated from Brazil nuts using different approaches, including morphological characters, RAPD and AFLP profiles, partial β-tubulin and calmodulin nucleotide sequences, aflatoxin patterns, as well as tolerance to low water activity in cultured media. Results showed that most of the isolates do belong to A. nomius species, but a few were re-identified as Aspergillus pseudonomius, a very recently described species. The results of the analyses of molecular variance, as well as the high pairwise FST values between A. nomius and A. pseudonomius suggested the isolation between these two species and the inexistence of gene flow. Fixed interspecific nucleotide polymorphisms at β-tubulin and calmodulin loci are presented. All A. pseudonomius strains analyzed produced aflatoxins AFB1, AFB2, AFG1 and AFG2. This study contains the first-ever report on the occurrence in Brazil nuts of A. pseudonomius. The G-type aflatoxins and the mycotoxin tenuazonic acid are reported here for the first time in A. pseudonomius. © 2014 Elsevier B.V. All rights reserved.pt_BR
dc.formatPT_Br
dc.languagePT_Br
dc.language.isoenpt_BR
dc.publisherElsevierpt_BR
dc.rightsPT_Br
dc.sourcePT_Br
dc.subjectAspergillus section Flavipt_BR
dc.subjectBrazil nutpt_BR
dc.subjectAflatoxin productionpt_BR
dc.titleBrazil nuts are subject to infection with B and G aflatoxin-producing fungus, Aspergillus pseudonomiuspt_BR
dc.typeArticlept_BR
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