Occurrence of aflatoxins B_1, B_2, G_1 and G_2 in cooked food components of whole meals marketed in fast food outlets of the city of Sao Paulo, SP, Brazil

摘要

Samples of cooked components of regular meals served at fast food outlets of the city of Sao Paulo, Brazil were analysed for aflatoxins B_1, B_2, G_1 and G_2. The 322 samples were compared of prepared traditional Brazilian and ethnic foods in which aflatoxins might Be present. Thin-layer chromatography was used for Separation of the compounds and their determination Was achieved by both long wave UV light and fluor- Odensitometry.