한국식품위생안전성학회지 (Journal of Food Hygiene and Safety)

  • 제23권3호
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  • Pages.227-232
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  • 2008
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  • 1229-1153(pISSN)
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  • 2465-9223(eISSN)
한국식품위생안전성학회 (The Korean Society of Food Hygiene and Safety)
권호 표지

항균 필름과 저장 온도의 돼지고기 저장성 및 미생물학적 안전성에 대한 병행 효과

Combined Effects of Antibacterial Film and Storage Temperature on Shelf-life and Microbiological Safety of Pork Meat

  • Ha, Ji-Hyoung (Department of Food Science and Technology, Chung-Ang University) ;
  • Lee, Yu-Si (Department of Food Science and Technology, Chung-Ang University) ;
  • Heo, Sun-Kyung (Department of Food Science and Technology, Chung-Ang University) ;
  • Bae, Dong-Ho (Department of Bioscience and Biotechnology, Konkuk University) ;
  • Park, Sang-Kyu (Biomolecular Informatic Center(BMIC), Konkuk University) ;
  • Ha, Sang-Do (Department of Food Science and Technology, Chung-Ang University)
  • 발행 : 2008.09.30
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초록

본 연구는 고흡습성 필름에 고추냉이 추출물을 첨가하여 제작한 항균흡습필름의 돼지고기 중 존재하는 식품위해미생물에 대한 살균효과를 확인하고자 하였다. 총호기성균 및 식품위해미생물인 Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium(NO/NA), Staphylococcus aureus를 점 접종하여 항균흡습필름으로 포장한 후 저장온도, 기간별 및 항균 필름의 코팅 횟수가 균의 성장 및 사멸에 미치는 영향을 관찰하였다. $5^{\circ}C$에서 총균수, E. cofi O157:H7, L. monocytogenes의 성장 억제 효과는 $10^{\circ}C,\;15^{\circ}C$에서 보다 우수하였다. 특히 S. Typhimurium, S. aureus는 $5^{\circ}C$에서 저온에 민감한 반응을 보이면서 6 $log_{10}cfu/g$ 수준에 도달하는데 모두 14일 이상 소요되었다. 이는 총 균수, E. coli O157:H7, L. monocytogenes가 냉장($5^{\circ}C$) 조건에서 성장이 활발하기 때문에 항균 필름의 두드러진 효과를 확인할 수 있었던 반면, S. Typhimurium, S. aureus 는 $5^{\circ}C$에서 성장이 느려 필름에 의한 항균 효과가 비교적 약하게 나타났다. 고추냉이 추출 물질이 함유된 흡습필름은 $10^{\circ}C,\;15^{\circ}C$에서 보다 $5^{\circ}C$에서 우수한 항균효과를 보였다. 세 가지 농도별 항균효과는 $5^{\circ}C$에서 두드러진 농도별 항균효과 차이를 보였으며 코팅 횟수가 늘어날수록 항균효과가 컸다. 이는 항균필름 한 가지로만은 저장기간 향상에 한계가 있고 냉장저장이라는 hurdle을 동시에 적용하여 항미생물 Synergy 효과를 보인다고 판단된다.

The purpose of this study was to investigate the antibacterial effect of films on shelf-life and microbiological Safety of pork meat. Effects of antimicrobial films against total aerobic bacteria, Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus in pork meat were evaluated during storage of 14 days at $5^{\circ}C,\;10^{\circ}C\;and\;15^{\circ}C$. Antimicrobial films were developed with addition of a natural substance, wasabi extracts(Wasabia japonica). At $5^{\circ}C$ storage, growth of total aerobic bacteria, E. coli O157:H7, L. monocytogenes were inhibited higher than at 10 and $15^{\circ}C$. Especially, the numbers of S. Typhimurium and S. aureus were increased gradually at $5^{\circ}C$ even in the control sample, and it takes more than 14 days to increase in every sample upto 6 $log_{10}cfu/g$. The higher antimicrobial effects of the films were observed at storage of $5^{\circ}C$ than at $10^{\circ}C$ and $15^{\circ}C$. There was a limit of a single treatment of antimicrobial film to prolong shelf-life of pork meat. The synergistic effect of antimicrobial film were observed with addition of refrigeration at $5^{\circ}C$.

키워드

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