Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Physicochemical, Microbiological and Sensory Properties of Korean Frozen Pork Loins for Export

한국산 수출용 냉동 돈육 등심의 물리화학적, 미생물학적 및 관능적 품질특성

  • Choi, Y.S. (Livestock Bureau, Ministry of Agriculture and Forestry) ;
  • Kim, J.H. (Natinal Livestock Research Institute, RDA.) ;
  • Park, B.Y. (Natinal Livestock Research Institute, RDA.) ;
  • Lee, J.M. (Natinal Livestock Research Institute, RDA.) ;
  • Kim, I.S. (Korea Meat Trade Association) ;
  • Kim, B.C. (Department of Food Science, Korea University)
  • Published : 2002.06.30
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Abstract

The Korean frozen pork loins in vacuum packaged were obtained from three different Korean export companies and investigated for pH, proximate composition, cooking loss, physico-chemical and sensory characteristics. The frozen pork loins were stored at -20$^{\circ}C$ for 40 days. The results were as follows: The protein contents were relatively higher in the samples from the company II and the ash contents were relatively higher in the samples from the company I than those from the other companies. The samples from the company Ⅱ had highest pH and water-holding capacity, and cooking loss and shear force were lowest in the company II. The total plate counts and coliform bacteria for loins from 3 companies were in the range of 3.04${\sim}$3.75 log cfu/$cm^2$ or g and 0.37${\sim}$1.32 log cfu/$cm^2$ or g in average, respectively. The TBARS values were 0.35${\sim}$0.38 mg malonaldehyde/kg sample. There were no significant differences in sensory characteristics for raw and cooked loins from all companies.

한국산 수출용 냉동 돈육의 품질 특성을 조사하기 위해 수출 육가공업체 3개소(Ⅰ . Ⅱ . Ⅲ)의 냉동 돈육 등심을 -20$^{\circ}C$에서 40일간 냉동 저장한 후 각 수출업체별 시료의 pH, 일반성분, 이화학적 특성, 관능적 특성, 선도 및 미생물 변화를 조사하였으며, 그 결과는 다음과 같다. 일반성분에서 조단백질은 Ⅱ업체 시료가 유의적(p<0.05)으로 높았고, 조회분은 Ⅰ업체 시료가 유의적으로 높았다. 육질 특성에서 pH와 보수성은 Ⅱ업체 시료가 유의적으로 높았으며, 전단력과 가열 감량은 Ⅱ업체 시료가 가장 낮았다. 총세균 수는 3.04${\sim}$3.75 log cfu/$cm^2$, 대장균군 수는 0.37${\sim}$1.32 log cfu/$cm^2$ 수준이었으며, TBARS 값은 평균 0.35${\sim}$0.38 mg malonaldehyde/kg sample 수준으로 비교적 낮았다. 척도묘사평가법을 이용한 관능검사 결과 세 업체 모두 평가 항목간에 유의적인 차이가 없는 것으로 나타났다.

Keywords

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