한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)

  • 제29권5호
  • /
  • Pages.849-853
  • /
  • 2000
  • /
  • 1226-3311(pISSN)
  • /
  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
권호 표지

키토산 첨가에 의한 축육 소시지의 보존성 개선에 관한 연구- II 키토산의 분자량에 따른 보존성의 차이

Studies on the Improvement of Storage Property in Meat Sausage Using Chitosan- II Difference of Storage Property by Molecular Weight of Chitosan

  • 윤선경 (부경대학교 식품생명공학부) ;
  • 박선미 (부경대학교 식품생명공학부) ;
  • 안동현 (부경대학교 식품생명공학부)
  • 발행 : 2000.10.01
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초록

가열소시지의 부패에 관여하는 균에 대한 항균성은 키토산의 분자량이 클수록 높은 것으로 나타났다. 즉, 분자량이 약 1 kDa과 5 kDa의 키토산은 약한 항균성을 나타냈으나 30 kDa과 120 kDa의 키토산은 강한 항균성을 나타냈는데, 그 중에서도 특히 분자량 약 120 kDa의 키토산이 가장 강한 항균성을 나타냈다. 키토산을 첨가하여 제조한 유화형 소시지를 $30^{\circ}C$에 보존하면서 보존성을 관찰한 결과, 분자량 약 30 kDa과 120 kDa의 키토산을 첨가한 경우 높은 보존효과를 나타냈다. 특히 분자량 약 120 kDa의 키토산을 0.5%첨가한 경우는 아질산염을 완전히 대체하는 보존효과를 나타냈다. 또한 분자량 약 30 kDa의 키토산을 0.2%이상 첨가하고 아질산염을 75 ppm 첨가하면 거의 완전한 보존효과를 나타냈고, 아질산염을 전혀 첨가하지 않아도 상당히 강한 보존효과를 나타내어 $30^{\circ}C$에서 7일간 저장해도 부패되지 않았다. 본 실험의 결과 키토산의 항균성 및 보존효과는 분자량이 클수록 우수하여, 소시지와 같은 가열 식품에 있어 분자량 약 30 kDa이상의 키토산을 첨가하면 보존성을 향상시크는데 큰 효과를 얻을 수 있을 것으로 사료된다.

This study was examined for antibacterial effect of various molecular weight of chitosan against spoilage bacteria in emulsion sausage. Four different kinds of chitosan, molecular weights (M.W.) of 1 kDa, 5 kDa, 30 kDa and 120 kDa, wee used. The more molecular weight of chitosan is high, the more storage property of sausage is good during storage at $30^{\circ}C$. Storage properties of sausages between added 0.5% of M.W. 120 kDa chitosan and 150 ppm of sodium nitrite were about the same. Effect of growth-inhibitory of spoilage bacteria was not detected 0.2% of M.W. 1kDa chitosan 0.2% of M.W. 5kDa chitosan have growth-inhibitory effect over 80% against only 3 strains among bacteria isolated from spoiled emulsion sausage. But, 0.2% of M.W. 30 kDa chitosan have growth-inhibitory effect of 80% against all strains of bacteria related to spoilage of emulsion sausage, except S. typhimurium, Especially, 0.2% of M.W. 120 kDa chitosan inhibited over 80% growth against all strains used in this study. The antibacterial activity was increased with their molecular weight.

키워드

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