Polarographic study of aflatoxins B1, B2, G1 and G2 : application of differential-pulse polarography to the determination of aflatoxin B1 in various foodstuffs

Abstract
The polarographic behaviour of aflatoxins B1, B2, G1, and G2 has been investigated and found to parallel closely that of coumarin and its derivatives. Differential-pulse polarography has been applied to the determination of aflatoxin B1 in a variety of food products. Good agreement was obtained between the differential-pulse polarographic method and visual comparison of the fluorescence exhibited by the aflatoxin following thin-layer chromatographic separation. Electroactive interferences co-extracted from high lipid-containing foods were removed by separation on a Sephadex LH-20 column.

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