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Provedor de dados:  Ciênc. Tecnol. Aliment.
País:  Brazil
Título:  Mycoflora and aflatoxigenic species in derivatives of milled rice
Autores:  LIMA,Carlos A. P.
ORSI,Reinaldo B.
DILKIN,Paulo
CORRÊA,Benedito
Data:  2000-04-01
Ano:  2000
Palavras-chave:  Aflatoxin
Aspergillus flavus
Mycoflora
Milled rice
Stored rice
Resumo:  Thirty samples of rough rice stored for 6, 12 and 24 months in government authorized warehouses of the state of Rio Grande do Sul, Brazil, were simultaneously collected. After milling of the product, 90 samples (30 of polished rice, 30 of rice bran and 30 of rice hull) were evaluated for their mycoflora, aflatoxigenic species and aflatoxin contamination. The following fungi, listed in decreasing order of frequency, were isolated on Potato-Dextrose Agar: Aspergillus spp., Nigrospora spp., Penicillium spp.; Fusarium spp.; Mucor spp.; Cladosporium spp.; Trichosporon spp. and non-sporulated fungi. The degree of fungal contamination (colony forming units per gram of product) was lowest in polished rice, increasing progressively in samples of rice bran and rice hull. Among the Aspergillus species, A. flavus and A. candidus were isolated most frequently. Of the A. flavus isolates, 52.6% strains were found to be toxigenic and produced only Group B aflatoxins. Analysis of the 90 samples did not reveal the presence of aflatoxins in the rice derivatives.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612000000100008
Editor:  Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Relação:  10.1590/S0101-20612000000100008
Formato:  text/html
Fonte:  Food Science and Technology v.20 n.1 2000
Direitos:  info:eu-repo/semantics/openAccess
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