Occurrence of aflatoxin M1 in milk and dairy products commercialized in Campinas, Brazil.
One hundred and fifty-two samples of pasteurized milk, powdered milk, cheese and yoghurt, marketed in Campinas, Brazil in 1989-1990, were analysed for aflatoxin M1 by the AOAC TLC method (visual quantitation) 980.21. Fifty-two pasteurized milk samples were also analysed in 1992 by the AOAC HPLC method 986.16. Aflatoxin M1 was not detected in the 1989-1990 samples. Four milk samples of the 1992 batch were contaminated at 73-370 ng/1. Except for the sample with 370 ng/l, which would have been also found positive by the TLC method, the detection of aflatoxin M1 in 1992 reflects the higher sensitivity of the HPLC method, not a greater occurrence of the toxin. Contamination of milk and milk products with aflatoxin M1 does not appear to be a serious public health problem in the city of Campinas at the moment.
de Sylos
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Departamento de Ciência de Alimentos, Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas, Sâo Paulo, Brazil.
Rodriguez-Amaya
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Carvalho
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D016607:Aflatoxin M1 / Q000032:analysis* / Q000378:metabolism; D000818:Animals; D001938:Brazil; D002273:Carcinogens / Q000032:analysis* / Q000378:metabolism; D002611:Cheese / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D003611:Dairy Products / Q000032:analysis*; D005506:Food Contamination; D008892:Milk / Q000737:chemistry*; D011634:Public Health / Q000592:standards; D015014:Yogurt / Q000032:analysis
D002273:Carcinogens; D016607:Aflatoxin M1