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KMID : 0380620110430050544
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Korean Journal of Food Science and Technology
2011 Volume.43 No. 5 p.544 ~ p.552
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Analysis of PAHs (polycyclic aromatic hydrocarbons) in Ground Coffee Using GC-tandem Mass Spectrometry and Estimation of Daily Dose
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Jung So-Young
Park Ju-Sung
Son Yeo-Joon
Choi Su-Jeong
Lee Yun-Jeong
Kim Mi-Sun
Park So-Hyun
Lee Sang-Me
Chae Young-Zoo
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Abstract
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The purpose of this study was to develop an analytical method for determining 15 polycyclic aromatic hydrocarbons (PAHs) of EU priority using gas chromatography (GC)-tandem mass spectrometry (MS). The PAHs in ground coffee were analyzed after being extracted using methods such as saponification-liquid-liquid extraction, Soxhlet extraction, and solid-liquid extraction. The solid-liquid extraction method showed the greatest repeatability and most efficient reduction of the matrix effect. GC-tandem MS for the quantification of the 15 PAHs showed better resolution and lower limit of detections (LODs) than GC-MS-selected ion monitoring (SIM) and high performance liquid chromatography with fluorescence detector. LODs of this method for the ground coffee types were 0.002-0.1 μg/kg and limit of quantifications (LOQs) were 0.006-0.2 μg/kg The recoveries ranged from 52.6 to 93.3%. Forty-six commercial types of ground coffee were analyzed to determine their PAHs contamination levels. PAHs concentration ranged from ND to 5.988 μg/kg. This study was conducted with toxicity equivalence factors, the U.S. EPA recommendation to identify dietary risks for PAHs in different types of coffee. The estimated average daily dose of PAHs was 5.24×10?8 mg/kg body weight/ day.
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KEYWORD
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PAHs, GC-tandem mass, ground coffee, average daily dose
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