Keywords
Deoxynivalenol
Zearalenone
Occurrence
Cereals
How to Cite
Abstract
The presence of mycotoxins was verified in samples of peanut and peanut products (aflatoxins), corn meal, cereal flakes and oats flakes (zearalenone), wheat flour, bran and bakery products (deoxynivalenol). The samples were acquired in supermarkets, in the cities of state of Minas Gerais, Brazil. Thin layer
chromatography methods were employed to quantify aflatoxins and deoxynivalenol, and a high performance
liquid chromatography method was used for zearalenone. Aflatoxins were detected in 66 of the 120 samples
tested. Fifty six samples had total aflatoxins levels ( B1 + B2 + G1 + G2 ) above those established by Brazilian
regulations (Ministry of Agriculture) and 54 samples showed aflatoxins levels (B1 + G1 ) above those established by Ministry of Health. The concentration of total aflatoxins ranged from 3 to 2714 µg/Kg and the mean concentration was 960 µg/Kg. Deoxynivalenol (DON ) was detected in 32 out of 47 samples analysed. The concentration of DON ranged from 40 to 1205 µg/Kg. Only one sample of oat flakes was found to be
contaminated with zearalenone ( 8.5 µg/Kg ) out of 34 samples of cereal products examined.
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Copyright (c) 2002 Revista do Instituto Adolfo Lutz
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