Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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The Effect of Washing of Carcasses with Sodium Hypochlorite Solution and Vacuum Packaging on the Microbiological and Physiochemical Quality of the Breast Meat from Old Hen during Storage at 4℃

차아염소산나트륨 세척 및 진공 포장이 노계 가슴육의 냉장 저장 중 미생물학적 및 이화학적 품질에 미치는 영향

  • Na, Jae Cheon (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Kim, Sun Hyo (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Jung, Samooel (Department of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Soo Kee (Department of Animal Science and Biotechnology, Chungnam National University) ;
  • Kang, Hwan Gu (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Choi, Hee Cheol (Poultry Science Division, National Institute of Animal Science, RDA) ;
  • Jo, Cheorun (Department of Agricultural Biotechnology, Seoul National University)
  • Received : 2013.10.16
  • Accepted : 2013.10.22
  • Published : 2013.12.30
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Abstract

This study was conducted to examine the effect of spray-washing old hens (old laying hens, old molting hens and old breeder hens) carcasses with sodium hypochlorite (50 ppm) solution and vacuum packaging on the microbiological and physiochemical quality of breast meat during storage at $4^{\circ}C$. There were no significant differences of cooking loss and texture among breast meats from different birds with spray-washing by water or sodium hypochlorite solution before storage. The numbers of total aerobic bacteria of aerobically packaged and only water-washed breast meat were higher than 7 Log CFU/g (the limitation population for spoilage of meat) after 7 days of storage. However, the numbers of total aerobic bacteria of vacuum packaged breast meat washed by sodium hypochlorite solution were lower than 7 Log CFU/g even after 14 days of storage. The volatile basic nitrogen content of vacuum packaged breast meat were lower than 20 mg% (the limitation value for spoilage of meat) regardless of the washing method, while those of aerobically packaged breast meat washed by tap water and sodium hypochlorite solution were 41.1 and 20.1 mg%, respectively. In addition, lipid oxidation and change of pH in breast meat was inhibited by vacuum packaging when compared with that of aerobic packaged breast meat during storage. Therefore, the results indicated that the washing old hen's carcasses with sodium hypochlorite (50 ppm) solution and vacuum packaging could improve the shelf-life of meat from old birds. This result can provide the basic information for industry, which are seeking for export market.

본 연구는 국내에서 생산되는 노계육(산란노계, 환우계 및 종계)의 우수한 저장성 확보를 위해 수행되었으며, 차아염소산나트륨 세척 및 진공 포장 방법이 $4^{\circ}C$ 냉장 저장 중 노계가슴육의 미생물학적 및 이화학적 품질에 미치는 영향을 조사하였다. 노계육을 물 또는 50 ppm 차아염소산나트륨 세척 후 가슴육의 가열 감량과 조직감 분석 결과, 노계 종류 및 세척방법에 따른 유의적인 차이는 나타나지 않았다. 노계육을 물 또는 50 ppm 차아염소산나트륨으로 세척 후 가슴육을 함기 또는 진공 포장하여 $4^{\circ}C$ 냉장 저장하면서 가슴육의 총 호기성 미생물을 측정한 결과, 식육의 부패 기준이 7 Log CFU/g 임을 고려하였을 때 차아염소산나트륨 세척 또는 진공 포장단일 처리에 의해 노계 가슴육을 7일 이상 저장할 수 있음이 확인되었으며, 차아염소산나트륨 세척 및 진공 포장 병용처리 시 14일 이상의 저장 기간을 확보할 수 있음이 확인되었다. 게다가 노계 가슴육을 진공 포장하여 저장하였을 때 노계 가슴육의 VBN 함량이 저장 7일 후에도 식육의 부패기준인 20 mg% 미만으로 나타났으며, 지방 산패 또한 함기포장 처리구에 비해 억제됨이 확인되었다. 저장 중 노계 가슴육의 pH는 저장 기간 증가와 함께 증가하는 경향을 보였으나, 노계 종류에 따른 차이가 컸고, 진공 포장하였을 때 증가가 억제되었다. 결론적으로 노계육을 차아염소산나트륨으로 세척 후 진공 포장하여 냉장 저장 시 노계육의 우수한 저장성 개선을 기대할 수 있을 것으로 사료된다.

Keywords

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