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Garrido NS, Iha MH, Santos Ortolani MR,
Duarte Fávaro RM. Food Addit Contam. 2003 Jan;20(1):70-3
Occurrence of aflatoxin M1 and aflatoxin M2 in milk
commercialized in Ribeirão Preto-SP, Brazil.
Instituto Adolfo Lutz, Laboratório I de
Ribeirão Preto, Rua Minas, 877, Ribeirão Preto, São Paulo,
Brazil.
Aflatoxins are toxic metabolites found in
foods and feeds. When ruminants eat foodstuffs containing
aflatoxins B(1) and B(2), these toxins are metabolized and
excreted as aflatoxin M(1) and M(2) in milk. The aim was to
determine the incidence of these aflatoxins in commercial milk
collected from supermarkets in Ribeirão Preto-SP, Brazil, and
consisting of 60 ultrahigh temperature (UHT) milk samples and 79
pasteurized milk samples. The milk samples were analysed
according to method 986.16 of AOAC International. None of the
milk samples analysed were contaminated with aflatoxin M(2), and
aflatoxin M(1) was detected in 29 (20.9%) of samples in the
range 50-240 ng l(-1). The results show that despite a high
occurrence of aflatoxin M(1) in commercial pasteurized and UHT
milk sold in Ribeirão Preto in 1999 and 2000, the contamination
level of these toxins could not be considered a serious public
health problem according to MERCOSUR Technical Regulations.
However, levels in 20.9% of the milk samples exceeded the
concentration of 50 ng l(-1) permitted by the European Union.
Although it is not necessary to continue monitoring the
incidence and levels of aflatoxins M(1) and M(2) in milk
samples, surveillance could be appropriate.
PMID: 12519721 |
