Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Chemical and Biological Properties on Sanitary of Cultured Oyster Crassostrea gigas Intended for Raw Consumption or Use in Seafood Products

양식산 굴(Crassostrea gigas)의 생굴 및 가공소재용으로서 화학적 및 생물학적 위생 특성

  • Park, Sun Young (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Lee, Kyung Don (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Lee, Jung Suck (Research Center for Industrial Development of Seafood, Gyeongsang National University) ;
  • Heu, Min Soo (Research Center for Industrial Development of Seafood, Gyeongsang National University) ;
  • Lee, Tae-Gee (Department of Hotel Cuisine & Baking, Jeonnam Provincial College) ;
  • Kim, Jin-Soo (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University)
  • 박선영 (경상대학교 해양식품생명의학과/해양산업연구소) ;
  • 이경돈 (경상대학교 해양식품생명의학과/해양산업연구소) ;
  • 이정석 (경상대학교 수산식품산업화 기술지원센터) ;
  • 허민수 (경상대학교 수산식품산업화 기술지원센터) ;
  • 이태기 (전남도립대학교 호텔조리제빵과) ;
  • 김진수 (경상대학교 해양식품생명의학과/해양산업연구소)
  • Received : 2017.03.22
  • Accepted : 2017.07.17
  • Published : 2017.08.31
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Abstract

Oysters Crassostrea gigas are a globally popular shellfish for human consumption. As filter-feeding bivalve mollusks, oysters may harbor many microorganisms and chemicals that could pose potential human health risks. The objective of this study was to investigate the suitability of cultured oysters for raw consumption or use in seafood products by measuring concentrations of harmful microorganisms and chemicals in their flesh. Microbial concentrations in cultured oysters were found to be: $1.0{\times}10^2-6.0{\times}10^4CFU/g$ (viable cell counts), not detected $(ND)-5.4{\times}10^3CFU/g$ (coliform bacteria), $ND-1.3{\times}10^2CFU/g$ (E. coli), and $ND-4.6{\times}10^3CFU/g$ (Vibrio parahaemolyticus). Other pathogenic bacteria, including Enterohemorrhagic E. coli (EHEC), Listeria monocytogenes, Staphylococcus aureus, and Salmonella spp., were not detected in any samples. Heavy metal concentrations of cultured oysters were ND-0.239 mg/kg (total mercury), ND-1.091 mg/kg (lead), ND-0.968 mg/kg (cadmium). The concentrations of benzo(a)pyrene ranged from $0.280-0.880{\mu}g/kg$. Paralytic shellfish poison ranged from ND-0.58 mg/kg, while diarrhetic shellfish poison was not detected. No radioactivity was detected. These results suggest that oysters intended for raw consumption or use in seafood products should be subjected to chemical and biological controls.

Keywords

References

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