Abstract

The objectives of this study were to assess aflatoxin M1 (AFM1) contamination in processed milk and dairy products, and to estimate the mean daily exposure of the adult Serbian population to AFM1 due to milk consumption. A total of 1734 samples, comprising heat treated cow’s milk (n=1233), infant formulae (n=349), milk powder (n=94) and dairy drink (n=58), were analyzed for AFM1 presence using an Enzyme-Linked Immunosorbent Assay (ELISA) commercial kit. Samples were collected from different regions of Serbia during four seasons each year during 2015 and 2016. The incidences of AFM1 contamination were 77.8% with a mean level of 0.027±0.03 μg/L (range of <0.005-0.278 μg/L) in samples collected in 2015, and 98.4% with a mean level of 0.039±0.02 μg/L (range of <0.005-0.28 μg/L) in samples collected in 2016. The highest AFM1 levels were measured in October 2015 (0.278 μg/L) and September 2016 (0.279 μg/L). Based on EU regulation, 214 (17.3%) milk samples exceeded the maximum residue limit (0.05 μg/L). The estimated daily intake (EDI) of AFM1 during different seasons of year for males and females was in the range of 0.022-0.330 (mean 0.20) ng/kg/bw/day and 0.022-0.30 (mean 0.18) ng/kg/bw/day, respectively. The calculated EDI indicate a public health concern due to the carcinogenic effects of AFM1.

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