engleski

Reduction of aflatoxin B1 in naturaly contaminated corn samples by gamma irradiation

Mycotoxin aflatoxin B1 (AFB1) is secondary metabolite of moulds from Aspergillus genera that can be found as food and feed contaminant around the world. Its toxicity is well established and numerous strategies have been developed in protecting animals and humans exposure to this mycotoxin. Gamma irradiation is a physical method that is commonly used for inactivation of moulds growth in foodstuffs and cultural heritage objects. However, effect of gamma irradiation on AFB1-reduction is not clear so far. The aim of this study was to investigate the effect of gamma irradiation on AFB1-reduction. Corn seeds samples (n=30) naturally contaminated with AFB1 at concentration range from 57 to 1210 μg/kg were irradiated at doses of 5 kGy and 10 kGy. The overall reduction of AFB1 level after 5 kGy irradiation dose was 76.5%, while at dose of 10 kGy it was 94.8%. These results indicate that gamma irradiation is effective method for reducing AFB1 level in commodities intended for animal and human consumption thus minimizing their exposure to this carcinogenic mycotoxin.

micotoxins; aflatoxin B1-reduction; corn seeds; gamma irradation

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