Ocorrência de aflatoxinas M1 e M2 em leite de cabra comercializado na região de Ribeirão Preto-SP, Brasil

The aim of the present study was to determine the occurrence of aflatoxins M1 and M2 in commercially available goat milk samples collected from supermarkets located in Ribeirao Preto region, SP, Brazil. A total of 39 goat milk samples manufactured in three Brazilian states, consisting of 15 Ultrahigh-temperature milk samples and 24 frozen pasteurized milk samples were analyzed following AOAC, 2000 protocol. None of the analyzed milk samples was contaminated with aflatoxin M2, and aflatoxin M1 was detected in 7 (18%) samples in a range of from 20 to 98ng/L. According to these findings both the occurrence and the level of aflatoxins M1 are low, and the goat milk samples manufactured in three Brazilian states is devoid of aflatoxin M2. Although, further surveillance studies on the occurrence of these toxins in goat milk are required, because these data are limited. On the other hand, the Brazilian climatic conditions may promote the occurrence of aflatoxin B1 and B2 in feeds, which can be metabolized into aflatoxin M1 and M2.