Levels of fumonisins B1 and B2 in two (2) stored commodities: the case of sorghum (Sorghum bicolor) and millet (Pennisetum spp) intended for human consumption

The aims of this study is to evaluate the level of fumonisin B1 and B2 in sorghum (Sorghum bicolor) and millet (Pennisetum spp). To do this, a method for assaying FB1 + FB2 has been validated and the quantification limits of FB1 and FB2 obtained are respectively 17.5 μg / kg and 22.1 μg / kg. The extracts were purified on immunoaffinity cartridges. The detection and quantification of fumonisins was carried out by HPLC equipped with a fluorescence column detector RP 18. One hundred (100) samples of sorghum and millet were collected in three (3) localities in Côte d Ivoire namely Korhogo, Boundiali and Abidjan. 45% of the samples taken were fumonisin contaminated, of which 32% had FB1 levels with an average of 40.71 ± 5.28 μg / kg, compared to 13% for a presence in FB1 + FB2 at an average concentration of 206.71 ± 17.96 μg / kg . These detected levels were all below the maximum tolerable level set at 4000 μg FB1 + FB2 / kg in raw cereals according to EC Regulation 1126/2007.