Mold occurrence and aflatoxin B1 and fumonisin B1 determination in corn samples in Venezuela
2000
Medina-Martinez, M.S. | Martinez, A.J.
Fumonisins are mycotoxins produced mainly by Fusarium moniliforme and Fusarium proliferatum, which have been associated with several animal and human diseases. Aflatoxins are hepatotoxic, mutagenic, and teratogenic metabolites produced by Aspergillus flavus and Aspergillus parasiticus. Both have been reported at high levels in corn. This study was pursued to determine mold, aflatoxin B1 (AFTB1), and fumonisin B1 (FB1) levels in white and yellow corn. Mold levels were determined using potato dextrose agar and identification of the main genus of molds present in corn, AFTB1 levels by immunoaffinity chromatography, and FB1 levels by a Bond-Elut SAX cartridge and HPLC. AFTB1 and FB1 occurrences were 16.6 and 83.78%, respectively. The yellow corn presented higher mold incidence than the white corn. A. flavus and F. moniliforme were isolated. The positive results show the importance of this study, corn being the main cereal consumed in the Venezuelan diet.
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