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Abstract
Aflatoxin M1 (AFM1) contamination is evaluated in 120 samples of raw milk from cow and buffalo (60 each), collected randomly in the Shush (southwest Iran). Enzyme-linked immunoabsorbent assay (ELISA) was applied to analyse AFM1 in the samples. AFM1 was detected in 44 (69%) raw cow milk samples with a mean of 55 ng/l at a range of 3.6–419 ng/l) and in 46 (79%) raw buffalo milk samples with a mean of 116 ng/l at a range of 13–423 ng/l. In all samples, the AFM1 concentration was lower than the Iranian national standard and FDA limit of 500 ng/l. According to the European Union and Codex Alimentarius Commission, 18 (28%) and 32 (52%) of cow and buffalo raw milk samples are above the 50 ng/l limit, respectively. Results showed that AFM1 contamination of raw milk could pose a problem for public health, since all age groups, including infants and children, consume this product.