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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Acta Amaz. vol.18 no.3-4 Manaus  1988

http://dx.doi.org/10.1590/1809-43921988183183 

PATOLOGIA

Fungos contaminantes e produtores de aflatoxinas em castanha do Pará (Bertholletia excelsa HUMB. & BONPL 1808)

Aurelia Lopes Castrillón** 

Adhemar Purchio*** 

** Instituto Nacional de Pesquisas da Amazônia - CP 478, Manaus - AM

*** Instituto de Ciências Biomédicas - Dep. de Microbiologia - USP, SP

RESUMO

Cem amostras de castanhas do Para, procedentes dos Estados do Amazonas e Sao Paulo, foram analisadas micológico e toxicologicamente para aflatoxinas B1 e G1. Isolou-se 312 colônias de fungos, sendo 91 do gênero Aspergillus, 83 do gênero Penicillium e as restantes incluídas em 23 gêneros diferentes. Entre as amostras de Aspergillus, 26 foram aflatoxigênicos, distribuídos em 3 espécies: Aspergillus flavas Link (18); Aspergillus parasiticus Speare (7) e Aspergillus fresenii Subram (1). Dos 100 extratos de castanhas analisados 3 foram positivos para aflatoxina.

ABSTRACT

One hundred samples of Brazil nuts from the States of Amazonas and São Paulo, were analysed mycologically and toxicologically for aflatoxins B1 and G1. Three hundred and twelve fungi were isolated of which 91 were of the genus Aspergillus, 83 of the genus Penicillium and the remainder included 23 different genera. Amongst the Aspergillus samples, 26 were producers of aflatoxin, distributed into three species: Aspergillus flavus Link (18); Aspergillus parasiticus Speare (7) and Aspergillus fresenii Subram (1). Of the 100 extracts of analysed nuts, three were afiatoxin-positive.

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