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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effect of Storage Properties of Pork Dipped in Chitosan Solution

키토산액 침지 처리에 의한 돈육의 저장성 향상 효과

  • 이현영 (부경대학교 식품생명공학부ㆍ수산식품연구소) ;
  • 박선미 (부경대학교 식품생명공학부ㆍ수산식품연구소) ;
  • 안동현 (부경대학교 식품생명공학부ㆍ수산식품연구소)
  • Published : 2003.06.01
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Abstract

The effect of chitosan on antimicrobial effect, shelf-life, antioxidation, color, moisture content and pH of pork loins stored at 1$0^{\circ}C$ was investigated. All concentration of 5 kDa chitosan had very weak antimicrobial effect in all concentration against spoilage bacteria in meat. 30 kDa and 120 kDa chitosan had very strong those effects above 0.1%. The pork dipped in 1% of 30 kDa and 120 kDa chitosans extended a shelf-life. In antioxidation, the dipped pork has shown remarkable effects in all concentrations of 30 kDa and 120 kDa chitosans. Also, the external redness of them was maintained stably. Their moisture contents were decreased slightly with the higher molecular weight and concentration during storage. The results suggested that properties of porks were improved with dipping in 1.0% of 30 kDa and 120 kDa chitosan.

식육의 부패에 관여하는 미생물에 대해 키토산의 항균력을 측정한 결과, 분자량 약 5 kDa의 키토산에서는 0.001~0.5%의 전 농도에서 항균력이 약하게 나타났으나, 분자량 약 30 kDa과 120 kDa의 키토산을 사용한 경우에는 0.01% 이상에서 대부분의 실험균주에 대해서 강한 항균효과가 나타났으나, Lactobacillus종은 키토산에 대한 항균력은 약간 떨어졌다. 분자량 약 5 kDa, 30 kDa 그리고 120 kDa의 키토산을 0.1~1.0%의 농도로 수용액을 제조하여 돈육 등심을 침지한 다음 1$0^{\circ}C$에서 8일간 저장성에 미치는 영향을 조사한 결과 분자량 약 30 kDa과 120 kDa의 키토산 용액의 1%침지 시 저장 효과가 나타났다. 지질의 산화 억제 효과는 분자량 약 5 kDa의 키토산 사용 시에는 약하게 나타났으나 분자량 약 30 kDa과 120 kDa의 키토산을 사용한 경우에는 저장 중 산화억제 효과가 전 농도에서 높았다. 돈육의 저장 중 색 변화에서는 분자량 약 30 kDa과 120 kDa의 키토산 처리 시 적색도가 안정하게 유지되는 것으로 나타났으며, 수분함량의 경우에 있어서도 분자량 약 30 kDa과 120 kDa의 키토산 처리 시 저장 중 수분할량의 감소 정도는 크지 않았다. pH는 돈육에 처리한 키토산의 분자량 및 농도가 낮을수록 급속하게 증가하는 경향을 나타내었다.

Keywords

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