Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Contents of Heavy Metals (Hg, Pb, Cd, Cu) and Risk Assessment in Commercial Cephalopods

유통 두족류의 중금속(Hg, Pb, Cd, Cu) 함량과 위해성 평가

  • Kim, Su-Un (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Hwang, Young-Ok (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Park, Ae-Sook (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Park, Young-Ae (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Ham, Hee-Jin (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Choi, Sung-Min (Seoul Metropolitan Government Research Institute of Health and Environment) ;
  • Kim, Jung-Hun (Seoul Metropolitan Government Research Institute of Health and Environment)
  • Received : 2011.01.04
  • Accepted : 2011.03.18
  • Published : 2011.04.30
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Abstract

The purpose of this study was to investigate certain heavy metals (Hg, Pb, Cd, Cu) in 144 samples of cephalopods, to identify weekly heavy metal intakes and to evaluate potential health risks. The average concentrations in the arm, expressed in mg/kg, were: Hg 0.017 (less than the limit of detection (LOD) to 0.059), Pb 0.024 (less than the LOD to 0.092), Cd 0.030 (less than the LOD to 0.627) and Cu 2.536 (less than the LOD to 5.837). The average concentration in the internal organs, expressed in mg/kg, were: Hg 0.063 (from 0.008 to 0.543), Pb 0.579 (less than the LOD to 2.344), Cd 15.200 (from 0.654 to 75.29) and Cu 201.706 (from 2.412 to 856.4). Heavy metal concentrations were higher in the organs than in the arm. Of the four heavy metals, the ratio of internal organs to arm was highest for cadmium. The weekly intakes of Hg, Pb, Cd and Cu from Octopus minor were 0.2%, 0.08%, 0.20% and 0.00%, respectively from the arm, and 1.0%, 0.96%, 92.28% and 0.05% from the internal organs as compared to PTWI (provisional tolerable weekly intakes) established by the FAO/WHO Expert Committee for Food Safety Evaluation.

본 연구에서는 저서성 두족류 낙지를 중심으로 주꾸미, 문어, 오징어 144건에 대해 생체에 강한 축적 경향으로 식품 안전상 중요시 되는 수은, 납, 카드뮴, 구리의 중금속 함량을 분석하였다. 두족류 가식부의 중금속 함량은 수은 $0.017{\pm}0.063\;mg$/kg, 납 $0.024{\pm}0.004\;mg$/kg, 카드뮴 $0.030{\pm}0.027\;mg$/kg, 구리 $2.536{\pm}0.653\;mg$/kg이었으며, 내장에서는 수은 $0.063{\pm}0.016\;mg$/kg, 납 $0.579{\pm}0.304\;mg$/kg, 카드뮴 $15.200{\pm}6.189\;mg$/kg, 구리 $201.706{\pm}129.7\;mg$/kg이었다. 낙지 가식부와 내장의 비로 중금속의 축적정도를 파악해보면, 카드뮴이 가장 높았고 다음이 구리, 납, 수은 순이었으며, 낙지 무게에 따른 중금속의 축적 정도와는 관련이 없는 것으로 나타났다. 또한 우리나라 국민이 낙지를 통해 섭취하는 수은, 납, 카드뮴, 구리 등의 중금속 주간 섭취량은 FAO/WTO에서 중금속 안전성 평가를 위해 정한 잠정주간섭취허용량인 PTWI의 0.0~0.20% 수준으로 안전한 것으로 판단 되며, 비가식부(내장)의 경우는 0.05~92.28%로 높게 나타나 낙지 섭취 시 낙지 내장을 제거한 후 섭취하는 것이 안전할 것으로 판단된다.

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