Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Microbial and Chemical Properties of Ready-to-eat Skate in Korean Market

국내유통 홍어회 제품의 미생물 및 이화학적 특성조사

  • Lee, Eun-Jung (Division of Food Safety Research, Korea Food Research Institute) ;
  • Seo, Jung-Eun (Division of Food Safety Research, Korea Food Research Institute) ;
  • Lee, Jeng-Kyung (Division of Food Safety Research, Korea Food Research Institute) ;
  • Oh, Se-Week (Division of Food Safety Research, Korea Food Research Institute) ;
  • Kim, Yun-Ji (Division of Food Safety Research, Korea Food Research Institute)
  • 이은정 (안전성연구단, 한국식품연구원) ;
  • 서정은 (안전성연구단, 한국식품연구원) ;
  • 이종경 (안전성연구단, 한국식품연구원) ;
  • 오세욱 (안전성연구단, 한국식품연구원) ;
  • 김윤지 (안전성연구단, 한국식품연구원)
  • Published : 2008.06.30
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Abstract

To evaluate safety of commercial skate product, Korean traditional ready-to-eat raw-fish, during from June to August in 2006, microbial and chemical properties such as levels of total plate count, coliform, food-borne pathogens, VBN-value, pH and ammonium concentration in ready-to-eat skate product were evaluated. Total plate counts of ready-to-eat skate product were ranges from 4.8 to 7.5 log CFU/g, and coliform was detected in 1 sample (2.48 log CFU/g) among 18 samples. Staphylococcus aureus, was detected in 2 samples among 18 samples, but Escherichia coli, Salmonella, spp., Vibrio parahaemolyticus, and Listeria monocytogenes were not detected. VBN-values and pH of skate were ranges from 12.6 to 593.9 mg% and from 6.7 to 9.4 depending on strength of fermentation, respectively. Ammonium concentrations of fermented skate were ranges from 4.4 to 14.1 mg/g and 2 samples, pre-fermented skate, were not detected.

2006년 $6{\sim}8$월 국내 유통 중인 홍어회의 미생물학적 이화학적 품질을 조사한 결과 홍어회는 다른 어패류와 달리 신선 상태가 아닌 숙성 후 섭취하는 제품으로 pH가 9 내외의 수준이고, 암모니움을 함유하고 있으며, 다른 신선식품 보다 VBN 값이 $15{\sim}30$배 정도 높았다. 숙성 홍어회의 미생물 오염 지표인 총균수 수준이 대다수 제품에서 식품 공전 상 잠정규격인 5 log CFU/g보다 높게 검출되었으며, 대장균군이 검출된 사례도 18건 중 1건이 있었고, 병원성 미생물인 S. aureus가 검출된 사례도 18건 중 2건이 있었다. 또한 약 5 log CFU/g 수준의 S. aureus를 숙성된 홍어회의 가식부위에 접종했을 때 저장 10일 째 일정 수준 (2 log CFU/g) 감소하긴 했지만, 3 log CFU/g 수준의 S. aureus가 10일 이상의 저장 기간에 걸쳐 유지되는 것을 확인할 수 있었다.

Keywords

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