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 Gamma Irradiation on Microbial Growth, Electron Donating Ability, and Lipid Oxidation of Marinated Beef Rib (Galbi) with Different Packaging Methods

포장방법에 따른 양념갈비의 저장 중 총균수, 전자공여능 및 지방산화의 감마선 조사효과

  • 강호진 (한국원자력 연구소 방사선식품ㆍ생명공학연구팀) ;
  • 조철훈 (한국원자력 연구소 방사선식품ㆍ생명공학연구) ;
  • 이나영 (한국원자력 연구소 방사선식품ㆍ생명공학연구) ;
  • 김정옥 (세종대학교 생활과학) ;
  • 변명우 (한국원자력 연구소 방사선식품ㆍ생명공학연구팀)
  • Published : 2004.06.01
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Abstract

The effect of irradiation and packaging methods (vacuum vs aerobic) on microbial growth, electron donating ability, and lipid oxidation in marinated beef rib (Galbi) was investigated. The total aerobic bacteria in Gazlbi reduced significantly with the increase of irradiation dose, and the effect was more significant in the Galbi with vacuum packaging, The pH showed a decreasing trend during storage and this change was more significant in the Galbi with aerobic packaging. Electron donating ability of Galbi was reduced by irradiation in aerobic packaging but no difference was found in vacuum packaging except 7 days. The 2-thiobarbituric acid reactive substances (TBARS) value of Galbi increased by irradiation in aerobic packaging during storage time, but that of vacuum packaging was maintained an initial value. Results indicated that irradiation coupled with vacuum packaging may enhance the microbial safety of Korean traditional meat products, Galbi, with minimum quality changes during storage.

양념갈비의 품질 안정성 및 저장성 확보를 위한 일환으로 시판되는 양념갈비에 감마선 조사(0, 2.5, 5, 7.5 kGy)하여 포장 방법(함기 vs 진공) 및 저장 기간에 따른 양념갈비의 총균수, pH, 수분활성도, 전자공여능 및 지방산패도를 측정하였다. 감마선 조사한 양념갈비의 미생물 생육은 조사선량이 증가할수록 저하되었고 포장방법별로는 함기포장구보다 진공포장구가 미생물 생장억제에 더욱 효과적임을 확인하였다. pH는 함기포장구에서 저장 7일째 다소 감소하는 경향을 보였으나 포장방법과 조사선량에 따른 유의 차가 나타나지 않았다. 감마선 조사한 양념갈비의 전자공여능은 저장기간에 따라 감소하는 경향을 보였으나 그 감소폭은 함기포장구가 진공포장구보다 크게 나타났다. TBARS값은 진공포장구의 경우 감마선 조사선량과 저장기 간에 따라 유의적인 차이는 없었다. 그러나 함기포장구는 조사선량이 증가할수록 그리고 저장기간에 따라 유의적으로 증가하여 저장 7일째 진공포장구보다 2배의 높은 값을 나타내었다. 따라서 시판되는 양념갈비의 저장 중 유통안전성을 확보하기 위한 감마선 조사의 사용에서 품질을 유지하기 위해서는 진공포장으로 유통하는 것이 바람직하다고 판단된다.

Keywords

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