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KMID : 0380620120440020247
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Korean Journal of Food Science and Technology
2012 Volume.44 No. 2 p.247 ~ p.250
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Analysis and Monitoring of Aflatoxin M1 in Milks
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Park Sung-Kug
Kang Young-Woon
Kwon Ki-Sung
Lee Gwang-Ho
Kim Mee-Hye
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Abstract
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Raw milk samples (n=28) obtained from milk tanks in 3 dairy plants of different regions and commercial milks (n=100) were collected from six cities. These samples were analyzed for the level of aflatoxin M1 contamination using immunoaffinity columns and high performance liquid chromatography coupled with fluorescent detectors. Confirmation of aflatoxin M1 (AFM1) identified in positive samples was based on the formation of the hemiacetal derivative (AFM2a) after derivatization with trifluroacetic acid. The average concentrations of aflatoxin M1 in the raw milks were 25.1 ng/kg, and those values in commercial milks were 29.8 ng/kg. The highest level of aflatoxin M1 in milk was 72.7 ng/kg. These results showed that the contamination of aflatoxin M1 in milks consumed in the Korea was quite low compared to the standard in Korea Food Code (aflatoxin M1 500 ng/kg).
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KEYWORD
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aflatoxin M1, contamination, milk
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