Aflatoxins (AFL) are fungal metabolites that can contaminate animal feed, causing toxic effects after consumption. Among the AFL, there are reports of the occurrence of aflatoxin M1 (AFM1) in milk, so the objective of this work was to evaluate the AFM1 content in bovine milk samples produced in the State of Amazonas-Brazil. Of the analyzed samples (n=30), 20% were found to be contaminated with AFM1 in the range of 0.093-0.320 μg/kg (Limit of detection= 0.0625 μg/mL). No sample exceeded current Brazilian legislation, but all exceeded the maximum European regulatory limit of 0.05 μg/kg. Risk analysis estimated a daily intake of 5.357 x 10-7 mg/kg body weight/day for men and 6.257 x 10-7 mg/kg body weight/day for women. The MOE result did not indicate concern in public health aspects. On the other hand, the occurrence of AFM1 in the state of Amazonas was observed in an unprecedented way and need further investigation including other dairy products.

Bovine milk is a food consumed by people of different age groups and especially by children, as it provides essential nutrients to the diet. In Brazil, milk is one of the most important products of Brazilian agriculture, being essential in the generation of employment and income. However, when there is contamination by toxic agents, such as aflatoxin (AFL) which is carcinogenic to humans and animals, there is a risk to the health of the consumer. Therefore, the objective of this work was to analyze the efficiency of the application of UV LED light as a tool to reduce aflatoxin M1 (AFM1) in bovine milk produced in the state of Amazonas, Brazil. Concerning time in 3-, 6- and 9-minutes, the reduction rates of 75.5, 97.3, and 94.1% were observed, respectively. The use of UV LED light was effective in reducing the concentration of AFL studied to be evaluated on a production scale.