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Safety Monitoring of a Processing Plant for Preparing Raw Oysters Crassostrea gigas for Consumption

생식용 굴(Crassostrea gigas) 작업장의 위생안전성에 대한 모니터링

  • Kang, Kyung Tae (Korea Institute for Food Safety Management Accreditation) ;
  • Park, Sun Young (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Choi, Jong-Duck (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Kim, Min Joo (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University) ;
  • Heu, Min Soo (Department of Food Science and Nutrition, Gyeongsang National University) ;
  • Kim, Jin-Soo (Department of Seafood and Aquaculture Science/Institute of Marine Industry, Gyeongsang National University)
  • 강경태 (한국식품안전관리인증원) ;
  • 박선영 (경상대학교 해양식품생명의학과/해양산업연구소) ;
  • 최종덕 (경상대학교 해양식품생명의학과/해양산업연구소) ;
  • 김민주 (경상대학교 해양식품생명의학과/해양산업연구소) ;
  • 허민수 (경상대학교 식품영양학과) ;
  • 김진수 (경상대학교 해양식품생명의학과/해양산업연구소)
  • Received : 2017.02.03
  • Accepted : 2017.04.14
  • Published : 2017.04.30

Abstract

This study assessed the safety of raw oysters Crassostrea gigas for consumption during processing in a processing plant. Bacterial contamination (e.g., viable cell counts, coliform groups, Escherichia. coli and pathogenic bacteria) and chemical contamination (e.g., heavy metals and shellfish toxins) were measured on raw oysters, a processing equipment, employees and work areas. No total mercury, lead, paralytic shellfish poison, diarrheic shellfish poison or norovirus was detected in any post-harvested oyster samples. However, the cadmium level ranged from 0.1-0.2 mg/kg. The viable cell count, E. coli and coliform group levels in post-harvested oysters ranged from 4.00-4.54 log CFU/g, ND-210 MPN/100 g and 110-410 MPN/100 g, respectively. The viable contaminating cell counts on employees, equipment and work areas were in the range of $0.90-3.46log\;CFU/100cm^2$. Airborne bacteria in the work areas ranged from 0.60 to 1.81 log CFU/plate/15 min. Thus, no significant health risks were detected in the processing plant.

Keywords

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