Incidence of Aflatoxin M1 in Thai Milk Products

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Two hundred seventy samples of raw milk and off-the-shelf milk products were examined for aflatoxin M1 content using a radioimmunoassay. Aflatoxin M1 was found in the majority of milk samples except 1 sample of raw milk and 11 samples of imported powdered milk. All cases of aflatoxin M1 content greater than 0.5 ppb were found in 18% (48) of the samples including raw milk (17/67), pasteurized milk (20/63), ultra high temperature milk (7/60), sterilized milk (3/60), and pelleted milk (1/7). All powdered milk samples were negative for aflatoxin M1 except two samples with less than 0.1 ppb. The positive aflatoxin M1 test results for five of the raw milk samples were confirmed by HPLC.


Document Type: Research Article

Affiliations: Department of Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunand Road, Bangkok 10330, Thailand

Publication date: August 1, 1997

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