Abstract
A method is presented for the determination of aflatoxins in animal tissues. It consists of extraction of aflatoxins from the sample with methanol, treatment of the residue with a mixture of dimethoxymethane-methanol (4+1) to further precipitate proteins, evaporation of dimethoxymethane followed by a liquid-liquid defatting with hexane and heating of the methanol-water mixture before the transfer of aflatoxins into chloroform. Chloroform extracts are further purified by silica gel--acidic alumina--anhydrous sodium sulfate column chromatography.
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