Potencial toxigênico das cepas de Aspergillus flavus e Fusarium verticillioides isoladas de grãos de milho, da semeadura à colheita, provenientes das regiões de Capão Bonito/SP e Ribeirão Preto/SP

Adriana P. de Almeida; Myrna Sabino; Homero Fonseca; Benedito Corrêa

doi:10.53393/rial.2005.64.33037

Vol. 64 No. 1 (2005), ORIGINAL ARTICLE

Vol. 64 No. 1 (2005)

Toxigenic potential of Aspergillus flavus and Fusarium verticillioides strains in Brazilian corn from sowing to harvest processes

ORIGINAL ARTICLE

https://doi.org/10.53393/rial.2005.64.33037

Published 2005-01-03

Adriana P. de Almeida⁺⁻
Myrna Sabino⁺⁻
Homero Fonseca⁺⁻
Benedito Corrêa⁺⁻

Adriana P. de Almeida

Instituto Adolfo Lutz, Divisão de Bromatologia e Química, Seção de Química Biológica, São Paulo, SP

Myrna Sabino

Instituto Adolfo Lutz, Divisão de Bromatologia e Química, Seção de Química Biológica, São Paulo, SP

Homero Fonseca

Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Piracicaba, SP

Benedito Corrêa

Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, SP

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Keywords

aflatoxins
fumonisins
corn grains
soil and toxigenic potential

How to Cite

1.

de Almeida AP, Sabino M, Fonseca H, Corrêa B. Toxigenic potential of Aspergillus flavus and Fusarium verticillioides strains in Brazilian corn from sowing to harvest processes. Rev Inst Adolfo Lutz [Internet]. 2005 Jan. 3 [cited 2024 May 19];64(1):79-84. Available from: https://periodicos.saude.sp.gov.br/RIAL/article/view/33037

Abstract

The present study aimed to identify the toxigenic potential of Aspergillus flavus and Fusarium verticillioides strains isolated from 57 samples of corn kernels , and 90 samples of soil at different maturity stages from regions of Capão Bonito and Ribeirão Preto, with regards to production of aflatoxins and fumonisins, respectively. The toxigenic potential analysis of 14 A. flavus strains revealed the presence of aflatoxins in 13 strains (92.9%) in concentration ranging from 10.47 to 482.58 µg/kg for aflatoxin B₁, and from 2.9 to 132.5 µg/kg for aflatoxin B₂. With reference to toxigenic potential of F. verticillioides strains, 27 (100%) produced fumonisins in concentration of 0.10 to 4,833 µg/g of fumonisin B₁, and 0.05 to 321 µg/g of fumonisin B₂. The concomitant occurrence of A. flavus and F. verticillioides in corn field indicates the importance of an effective control of cultivation throughout the plant maturation stages.

https://doi.org/10.53393/rial.2005.64.33037

PDF (Português (Brasil))

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