Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Effect of Electron Beam Irradiation on the Microbial Growth and Qualities of Chicken Breast

전자선 조사가 진공 포장된 계육 가슴살의 미생물학적 변화 및 품질에 미치는 영향

  • Ko, Jong-Kwan (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Ma, Yu-Hyun (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Song, Kyung-Bin (Department of Food Science & Technology, College of Agriculture & Life Sciences, Chungnam National University)
  • Published : 2005.06.30
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Abstract

Electron beam irradiation was applied to examine the microbial growth and qualities of vacuum-packaged chicken breasts. Chicken breast samples were irradiated at dose of 2, 4, 8, 12, and 16 kGy, respectively. After irradiation, chicken breast samples were individually vacuum-packaged and stored at $4^{\circ}C$. Microbiological change of irradiated vacuum-packaged chicken breasts showed that populations of total bacteria, yeast and mold, total coliform, and salmonella spp. in chicken breasts were significantly reduced with increasing irradiation dose. The pH values of vacuum-packaged chicken breasts were not significantly changed among treatments. Lipid oxidation measurements showed that TBARS values of vacuum-packaged chicken breasts increased with increase of irradiation dose, and gradually increased during storage. Color measurements showed that irradiation reduced Hunter a value of vacuum-packaged chicken breasts with increasing irradiation dose. However, Hunter L and b values of vacuum-packaged chicken breasts were not significantly altered among treatments. Sensory quality results of vacuum-packaged chicken breasts showed that there were no significant changes among the samples irradiated. These results indicate that irradiation can be used to improve the microbial safety and qualities of poultry products.

전자선 조사가 계육 가슴살의 미생물학적 변화와 품질에 미치는 영향을 조사하였다. 전자선 조사는 진공 포장하여 2-16 kGy의 선량으로 조사하였고, 조사 후 $4^{\circ}C$에서 7일 동안 저장하였다. 저장 중 전자선의 미생물에 대한 사멸효과를 확인하고, pH, 지방의 산패, 색도의 변화와 관능검사를 통해 전자선이 계육 가슴살의 품질에 미치는 영향을 분석하였다. 조사선량이 증가함에 따라 계육 가슴살에 존재하는 미생물 수가 유의적으로 감소함으로써 미생물학적 안전성의 가능성을 확인하였다. 저장 중 전자선 조사된 계육 가슴살의 pH를 확인한 결과, 조사선량에 따른 유의적인 차이는 보이지 않았다. TBARS 값의 경우, 조사선량과 저장기간의 증가에 따라 그 값이 유의적으로 증가함을 나타내었다. 조사된 시료에 대한 Hunter L, a, b value를 측정한 결과, a value가 조사선량과 저장기간의 증가에 따라 유의적으로 감소함을 나타내었고, L value와 b value의 경우 대조구와 비교하여 유의적 차이가 없었다. 관능검사의 경우, 조사직 후 조사선량에 따른 차이는 보이지 않았으나 저장기간이 증가함에 따라 전자선 조사된 시료가 관능적으로 우수함을 나타내었다. 본 연구 결과, 전자선 조사가 계육 가슴살의 미생물학적 안전성의 확보와 품질의 개선에 효과가 있음을 보여주었다.

Keywords

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