Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effect of Feeding Dietary Oils on Physico-Chemical Changes of Pork during Storage

오일 급여가 돈육의 저장 중 물리ㆍ화학적 변화에 미치는 영향

  • 진상근 (동물생명산업지역협력연구센터) ;
  • 김일석 (진주산업대학교 국제축산개발학과) ;
  • 송영민 (진주산업대학교 국제축산개발학과) ;
  • 정기화 (진주산업대학교 국제축산개발학과) ;
  • 이성대 (진주산업대학교 국제축산개발학과) ;
  • 김희윤 (진주산업대학교 국제축산개발학과) ;
  • 남기윤 (진주산업대학교 국제축산개발학과) ;
  • 하경희 (진주산업대학교 국제축산개발학과) ;
  • 강양수 (경상남도농업기술원)
  • Published : 2003.09.01
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Abstract

The results were obtained from pigs which had been fed finishing pig diets containing 5% beef tallow(C) as control and 2% perilla seed oil(Tl), 3% beef tallow and 2% squid viscera oil(T2), 3% beef tallow and 2% CLA(conjugated linoleic acid, T3). All porks were stored at 1$^{\circ}C$ for 28 days. pH value of control group was higher than other treatments. Water holding capacity(WHC) did not show any significant difference among treatments, however, WHC of C and T3 was increased as storage days increased. Protein solubility of T3 was higher than the other treatments, but that of all groups increased up to 14 days of storage and then decreased. The a* value of C was higher than the others, but b* value was low on 28 days of storage. Volatile base nitrogen(VBN) value of T3 showed the highest level, but that of Tl was the lowest. Thiobarbituric acid reactive substances(TBARS) of T2 and T3 were' higher than those of C and Tl. In sensory analysis, meat color and overall acceptability of C were higher than those of the other treatments in raw meat, and meat appearance was higher than level in Tl.

비육후기 돼지 사료에 우지 5%를 첨가하여 급여한 돈육(대조구), 우지 3%와 들깨유 2%를 혼합하여 급여한 돈육(T1), 우지 3%와 오징어유 2%를 급여한 돈육(72), 우지 3%와 CLA 2%를 급여한 돈육(T1)을 1$\pm$1$^{\circ}C$에서 28일간 저장하면서 육짙특성을 조사한 결과는 다음과 같다. pH는 대조구가 나머지 세 급여구보다 유의적으로 높았으며, 저장기간 경과에 따른 차이는 보이지 않았다. 보수력은 처리간에는 일정한 차이를 보이지 않았으며, 저장기간이 경과할수록 대조구와 T3는 계속 증가하였으며, T1과 T2는 14일까지 증가 후 감소하였다. 단백질 용해성은 T3가 나머지 세 급여구보다 높았으며, 저장기간이 경과할수록 모든 급여구가 14일까지 증가 후 감소하였다. 육색 분석결과 a*값은 저장 28일 대조구가 나머지 세 급여구보다 높은 반면 b값은 낮게 나타났다. VBN은 T3가 가장 높고 T1이 가장 낮게 나타났으며, TBARS는 T2와 T3가 대조구와 T1보다 높게 나타났다. 신선육의 관능검사 결과 육색과 기호성은 대조구가 나머지 세 급여구보다 높게 나타났으며, 외관은 T1이 나머지 세급여구보다 높게 나타났다. 식물성유 대체 급여로 돈육의 품질특성에는 큰 차이를 나타내지 않았으나 불포화지방산의 증가로 인해 산화가 촉진되는 경향이 있으므로 항산화제를 함께 급여하는 것이 바람직하리라 사료된다.

Keywords

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