Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
권호 표지

Combination Effect of Modified Atmosphere Packaging and Electron Beam Irradiation on the Oxidative and Microbiological Stability of Ground Pork during Storage

공기 조절 포장과 전자선 조사의 병용이 분쇄돈육의 저장 중 산화와 미생물적 안정성에 미치는 영향

  • Whang, Key (Department of Food Science and Technology, Keimyung University)
  • Published : 2002.12.01
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Abstract

Ground pork was packaged(purged) with modified atmosphere (n$_2$ and CO$_2$) and irradiated with the electron beam in order to find out whether modified atmosphere packaging (MAP) inhibit the microbial growth and lipid oxidation development caused by electron beam irradiation. After packaging and irradiation, ground pork was stored at 4$^{\circ}C$ for 6 days and -15$^{\circ}C$ for 3 months, and periodically the microbial counts and the thiobarbituric acid reactive substances (TBARS) for the determination of lipid oxidation were measured. The inhibition of growth of total aerobic bacteria and mesophiles was confirmed when the ground pork was irradiated with the electron beam dose of 1.5 and 3.0 kGy. The N$_2$ or CO$_2$ purging alone was also effective in reducing the development of lipid oxidation of ground pork during storage at 4 and -15$^{\circ}C$. The combination of electron beam irradiation(1.5 and 3.0 kGy) with MAP (N$_2$ or CO$_2$) was effective to inhibit the growth of total aerobic bacteria and mesophiles, and retard the lipid oxidation of ground pork during storage at 4$^{\circ}C$ for 6 days and -15$^{\circ}C$ for 3 months.

분쇄 돈육을 $N_2$와 $CO_2$ 가스로 공기 조절 포장한 후 전자선으로 조사하여(0, 1.5, 3.0 kGy) 돈육을 저장하면서 미생물의 변화와 함께 공기 조절 포장이 전자선 처리에 의한 지방 산화를 억제하는지 관찰하였다. 분쇄 돈육은 공기 조절 포장과 전자선 처리(1.5와 3.0 kGy)후 4$^{\circ}C$에서 6일간 그리고 -15$^{\circ}C$ 에서 3달 동안 저장하면서 주기적으로 미생물 검사와 지방의 산패치를 측정하였다. 일반세균과 중온균의 경우 1.5와 3.0 kGy의 전자선 조사량으로 처리하였을 경우 대조구에 비해 그 증식이 현저히 억제되었음을 관찰하였다. 질소와 이산화탄소를 주입한 포장은 그 자체로도 대조구와 비교하였을 때 저장 중 지방의 산화를 억제하는 데에 큰 효과가 있었으며 또한 공기 조절 포장과 전자선 처리의 병용은 저장 중 분쇄 돈육의 미생물 증식과 지방의 산화를 억제하는데 효과적이었다.

Keywords

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