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KMID : 0380620070390050488
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Korean Journal of Food Science and Technology
2007 Volume.39 No. 5 p.488 ~ p.493
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A Survey of Total Aflatoxins in Food Using High Performance Liquid Chromatography-Fluorescence Detector (HPLC-FLD) and Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
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Jang Mi-Ran
Lee Chang-Hee
Cho Sung-Hye
Park Joon-Shik
Kwon Eun-Young
Lee Eun-Jin
Kim So-Hee
Kim Dae-Byoung
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Abstract
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A survey for total aflatoxins (aflatoxins B1, B2, G1, and G2) was conducted on 245 cereals and processed cereal products, and 148 nuts and processed nut products in Korea, for a total of 393 commercialized samples. The total aflatoxins were quantified by the immunoaffinity column clean-up method with high performance liquid chromatography (HPLC)-fluorescence detection (FLD), and were confirmed by liquid chromatography tandem mass spectrometry (LCMS/MS). Total aflatoxins (AFs) were detected in 37 samples (9.4% incidence), including 2 millet samples, 1 mixed cereal (sunsik), 1 powdered malt sample, 2 processed cereal products, 6 peanut samples, 22 peanut butter samples, and 1 sample each of almonds, adlay tea, and a processed nut product. The contamination levels were 0.04-2.65 μg/kg for aflatoxin B1, and 0.04 -5.51 μg/kg for total aflatoxins. Finally, LC-MS/MS analysis of the contaminated samples was conducted to confirm the detected aflatoxins, and all 37 samples showing aflatoxins by HPLC-FLD were confirmed by LC-MS/MS.
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KEYWORD
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aflatoxins, incidence, immunoaffinity column, HPLC-FLD, LC-MS/MS
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