Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Analysis of PAHs (polycyclic aromatic hydrocarbons) in Ground Coffee Using GC-tandem Mass Spectrometry and Estimation of Daily Dose

GC-tandem mass spectrometry를 이용한 분쇄원두커피 중 PAHs(polycyclic aromatic hydrocarbons) 분석법 연구 및 인체노출량 평가

  • Jung, So-Young (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Park, Ju-Sung (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Son, Yeo-Joon (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Choi, Su-Jeong (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Lee, Yun-Jeong (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Kim, Mi-Sun (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Park, So-Hyun (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Lee, Sang-Me (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Chae, Young-Zoo (Seoul Metropolitan Government Research Institute of Public Health and Environment)
  • Received : 2011.01.17
  • Accepted : 2011.08.04
  • Published : 2011.10.31
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Abstract

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 ${\mu}g/kg$ and limit of quantifications (LOQs) were 0.006-0.2 ${\mu}g/kg$ 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 ${\mu}g/kg$. 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 $5.24{\times}10^{-8}$ mg/kg body weight/day.

식품 중 존재하는 PAHs를 분석하기 위해 GC-MS/MS를 이용하여 분쇄원두커피를 대상으로 15종의 PAHs를 동시분석 하였다. 전처리법은 soxhlet법, 비누화분해 후 액체-액체 추출법, 초음파후 고체-액체추출법으로 비교실험하여 재현성과 불순물제거효율이 가장 좋은 초음파 후 고체-액체 추출법을 선택하여 실험하였다. 실험법의 회수율은 PAHs종에 따라 52.6-93.3%, 검출한계는 0.002-0.1 ${\mu}g/kg$, 정량한계는 0.006-0.2 ${\mu}g/kg$로 PAHs분석에 가장 좋은 감도를 나타내는 HPLC-FLD나 GC-MS-SIM과 비슷하거나 낮은 수준의 검출한계를 나타내었다. 적합한 전처리 방법을 선택한 후 시중 유통되는 원두커피를 대상으로 15종의 PAHs 함량을 조사하였을 때 46종의 총 PAHs농도는 불검출-5.988 ${\mu}g/kg$이었다. 분쇄원두커피를 커피메이커로 추출하여 PAHs의 이행계수를 계산 한 후 WHO와 U.S.EPA에서 설정한 상대독성계수(TEF)를 근거로 음용되는 원두커피의 인체노출량(mg/kg b.w./day)을 구한 결과 $5.24{\times}10^{-8}$ mg/kg b.w./day였다.

Keywords

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