Mycoflora and Co-Occurrence of Fumonisins and Aflatoxins in Freshly Harvested Corn in Different Regions of Brazil

International Journal of Molecular Sciences

Liliana O. Rocha¹  Viviane K. Nakai¹  Raquel Braghini¹  Tatiana A. Reis¹  Estela Kobashigawa² 

[1] Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil; E-Mails:;Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP, Brazil; E-Mail:

关键词: fumonisins;    aflatoxins;    corn (Zea mays L.);    mycotoxins;    mycoflora;    Fusarium verticillioides;    Aspergillus flavus;   

DOI  :  10.3390/ijms10115090

来源: mdpi

【 摘 要 】

Natural mycoflora and co-occurrence of fumonisins (FB₁, FB₂) and aflatoxins (AFB₁, AFB₂, AFG₁ and AFG₂) in freshly harvested corn grain samples from four regions of Brazil were investigated. Fusarium verticillioides was predominant in all samples. Analysis of fumonisins showed that 98% of the samples were contaminated with FB₁ and 74.5% with FB₁ + FB₂, with toxin levels ranging from 0.015 to 9.67 μg/g for FB₁ and from 0.015 to 3.16 μg/g for FB₂. Twenty-one (10.5%) samples were contaminated with AFB₁, seven (3.5%) with AFB₂ and only one (0.5%) with AFG₁ and AFG₂ Co-contamination with aflatoxins and fumonisins was observed in 7% of the samples. The highest contamination of fumonisins and aflatoxins was observed in Nova Odessa (SP) and Várzea Grande (MT), respectively. The lowest contamination of these mycotoxins was found in Várzea Grande and Nova Odessa, respectively.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.