Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Adherence Rates of Salmonella Typhimurium and Salmonella spp. in Pork Meat Contaminated during Processing

포장돈육 중 Salmonella Typhimurium과 Salmonella spp.에 오염된 돈육으로부터 식품과 식품접촉면으로의 오염 부착율

  • Kim, Seong-Jo (Department of Food Industry Development, Korea Health Industry Development Institute) ;
  • Bahk, Gyung-Jin (Department of Food & Nutrition, Kunsan National University) ;
  • Ding, Tian (Department of Food Science and Biotechnology and Institute of Bioscience and Biotechnology, Kangwon National University) ;
  • Kim, Tae-Woong (Department of Food Science and Biotechnology and Institute of Bioscience and Biotechnology, Kangwon National University) ;
  • Oh, Deog-Hwan (Department of Food Science and Biotechnology and Institute of Bioscience and Biotechnology, Kangwon National University)
  • 김성조 (한국보건산업진흥원) ;
  • 박경진 (군산대학교 생활과학부 식품영양전공) ;
  • 딩티안 (강원대학교 생명공학부 식품생명공학전공) ;
  • 김태웅 (강원대학교 생명공학부 식품생명공학전공) ;
  • 오덕환 (강원대학교 생명공학부 식품생명공학전공)
  • Published : 2008.06.30
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Abstract

This study was performed to determine the adherence rates of standard type Salmonella Typhimurium (ST) and wild type Salmonella spp.(WT) in pork after the following contact types and times at $10^{\circ}C$: pork meat (2, 6, 24 hr), conveyer belt (2, 6 hr), stainless steel (2, 6 hr), and cutting board (2, 6 hr). After 6 hr of pork meat to meat fat contact, the adherence rates for ST and WT were approximately 4.21 and 26.87%, respectively, and after 6 hrs of pork meat to red meat contact they were 16.40 and 27.48%, respectively. However, after 24 hr of both types of contact, ST and WT showed 100% adherence rates. The adherence rates for ST after 2 hr and 6 hr of pork meat to conveyer belt contact were 1.34 and 0.60%, respectively, while the adherence rate for WT was 5.14% after 6 hr of contact. After pork meat to stainless steel contact, ST showed adherence rates of zero and 1.59% after 6 and 24 hr of contact, respectively, while the adherence rates for WT ranged from 0.17% after 2 hr to 5.01% after 6 hr. On the other hand, neither ST nor WT offered adherence data following pork meat to cutting board contact. These results suggest that the adherence rates of ST and WT after pork meat to pork meat contact or pork meat to processing surface contact were significantly affected by the contact time and WT presented much higher adherence rates for both types of transmission than ST.

표준균주 S. Typhimurium과 분리균주 Salmonella spp.에 오염된 돈육을 $10^{\circ}C$에서 다른 돈육(삼겹살, 안심), 컨베이어벨트와 스테인리스 스틸, 도마에 일정시간(2, 4, 24시간)동안 접촉시킨 후 부착율을 조사하였다. Salmonella 표준균주와 분리균주에 오염된 돈육으로부터 삼겹살에 6시간 접촉 시 부착율은 4.21%, 26.87%를 나타내었고, 안심부위에 16.40%, 27.48%를 각각 나타내었지만, 24시간 후에는 두균 모두 삼결살과 안심부위에 100%의 부착율을 보였다. S. Typhimurium에 오염된 돈육으로부터 컨베이어벨트로의 부착율은 접촉시간 2시간 후에는 1.34%을 증가율을 나타냈으나, 6시간 후에는 0.60%로 감소하였고 분리균주 Salmonella spp. 는 접촉 6시간에 부착율이 5.14%의 부착율을 보였다. 스테인리스 스틸의 경우, 표준균주는 6시간 접촉 후에도 부착율이 전혀 없었으며, 분리균주는 접촉 6시간 후에 5.01%의 부착율을 보였다. 그러나 항균도마에는 표준균주와 분리균주 모두 전혀 부착하지 않았다. 본 연구결과, S. Typhimurium과 Salmonella spp.에 오염된 돈육에서 다른 돈육 또는 식품접촉면으로의 부착율은 접촉시간에 따라 영향이 컸으며 분리균주가 표준균주에 비하여 현저하게 높은 부착율을 나타내었다.

Keywords

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