Use este identificador para citar ou linkar para este item: http://repositorio.ital.sp.gov.br/jspui/handle/123456789/240
Título: The biodiversity of Aspergillus section Flavi and aflatoxins in the Brazilian peanut production chain
Autor(es): Martins, Ligia Manoel; et. al.







Palavras-chave: Aspergillus section Flavi
Peanut chain
Aflatoxins
Data do documento: 2017
Editor: Elsevier Ltd.
Citação: Food Research International, Science Direct, v. 94, p. 101–107, 2017. http://doi.org/10.1016/j.foodres.2017.02.006
Resumo: A total of 119 samples of peanutwere collected throughout the peanut production chain in São Paulo State, Brazil. The peanut sampleswere directly plated for determination of percentages of infection and a polyphasic approach was used to identify Aspergillus section Flavi species. Further, the potential for aflatoxin production by the isolates was tested using the agar plug technique and the presence of aflatoxins in peanuts was assessed using an immunoaffinity column followed by quantification using HPLC with reverse phase column and fluorescence detection. The limit of detection and quantificationwere 0.05 and 0.17 μg/kg for total aflatoxins, respectively. Four species of Aspergillus section Flavi were isolated: A. caelatus (11), A. flavus (515), A. parasiticus (17) and A. tamarii (13). All isolates of A. parasiticus were able to produce aflatoxin B and G whereas aflatoxin B was produced by 50% of A. flavus isolates. Aflatoxins were found in 12 samples at concentrations ranging from0.3 to 100 μg/kg. The data reported in this study add information on the occurrence and biodiversity of fungi in peanuts at several stages of the production chain. The occurrence of aflatoxins is also of major relevance for continuous monitoring and assessment of likely exposure of consumers to aflatoxins through consumption of peanuts.
URI: http://repositorio.ital.sp.gov.br/jspui/handle/123456789/240
ISSN: 0963-9969
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