Keywords
Arachis hypogaea (peanuts)
incidence
How to Cite
Abstract
Mycotoxins are toxic compounds produced by fungi found in food. The most toxic mycotoxins are
the aflatoxins produced mainly by Aspergillus flavus. Studies carried out in Brazil showed a high
incidence of these mycotoxins in peanut products, a fact that represents public health problems.
The aim of the study was to evaluate aflatoxins B1, B2, G1, and G2 in samples of peanuts sold in cities
of the Northeast of the State of São Paulo in the period from 1994 to 2001 and from 2016 to 2017.
The samples of the first period were analyzed using liquid-liquid extraction and thin-layer
chromatography and the second using immunoaffinity columns, post-column derivative liquid
chromatography and fluorescence detector. In the 1994-2001 survey, among 82 samples, 39%
presented aflatoxins contamination ranging from 11 to 1556 μg/kg with 37% with levels greater
than 20 μg/kg whereas, in the 2016-17 survey, 38% of the 56 samples presented contamination of
aflatoxins ranging from 0.09 to 60.40 μg/kg and 7 samples 13% containing aflatoxins levels higher
than 20 μg/kg. The results indicated there was a decrease in the incidence and level of aflatoxins, but
the contamination of aflatoxins in peanuts remains a public health problem.
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