Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Effects of Raising Periods on Physicochemical Meat Properties of Korean Native Black Goat

사육 개월령이 재래흑염소의 육질과 이화학적 특성에 미치는 영향

  • Kim, Kwan-Woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Kim, Hye-Jin (Department of Applied Animal Science, College of Animal Life Science, Kangwon National University) ;
  • Lee, Jinwook (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Lee, Eun-Do (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Kim, Dong-Kyo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Lee, Sung-Soo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA) ;
  • Jang, Aera (Department of Applied Animal Science, College of Animal Life Science, Kangwon National University) ;
  • Lee, Sang-Hoon (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
  • 김관우 (농촌진흥청 국립축산과학원 가축유전자원센터) ;
  • 김혜진 (강원대학교 동물생명과학대학 동물응용과학과) ;
  • 이진욱 (농촌진흥청 국립축산과학원 가축유전자원센터) ;
  • 이은도 (농촌진흥청 국립축산과학원 가축유전자원센터) ;
  • 김동교 (농촌진흥청 국립축산과학원 가축유전자원센터) ;
  • 이성수 (농촌진흥청 국립축산과학원 가축유전자원센터) ;
  • 장애라 (강원대학교 동물생명과학대학 동물응용과학과) ;
  • 이상훈 (농촌진흥청 국립축산과학원 가축유전자원센터)
  • Received : 2020.10.06
  • Accepted : 2020.11.06
  • Published : 2020.11.30
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Abstract

This study was conducted to investigate the effect of different raising periods (24 and 48 months) on the physico-chemical quality and fatty acid composition of meat from Korean native black goats. In terms of proximate composition, the meat from the 24-month age-group of the goats contained lower moisture and protein content and higher fat and ash content than that from the 48-month age-group. With an increase in age, moisture and protein content increased, whereas fat and ash content decreased. The pH was higher as was the cooking loss in the meat from the 24-month age-group than in the meat from the 48-months age-group (p < 0.05). However, there was no significant difference in the water-holding capacity and shear force of the meat from the two breeding periods (p > 0.05). A color analysis showed that the meat from the 24-month age-group had higher L*, a*, and b* values than the 48-month age-group (p < 0.05). The fatty acid composition and palmitic acid content increased with an increase in rearing periods, whereas stearic acid and oleic acid content decreased. The proportion of saturated and unsaturated fatty acid content was lower and higher, respectively, at 24 months of age and 48 months of age (p < 0.05).

본 연구는 사육 개월령이 재래흑염소 고기의 육질과 이화학적 특성에 미치는 영향을 조사하기 위하여 24개월령과 48개월령의 재래흑염소 통영계통 암컷을 이용하여 분석하였다. 일반성분 분석결과 24개월령과 48개월령간 수분 함량은 유의적인 차이가 없었으며 조단백질과 조회분은 48개월령에서 더 높게 나타났으나 조지방은 24개월령이 더 높게 나타났다. 사육 개월령별 재래흑염소 고기의 pH는 24개월령에서 유의적으로 높게 나타났고 보수력도 더 높은 경향을 나타내었지만 유의적인 차이는 없었다. 육색 중에서 명도(L*)는 사육 개월이 증가할수록 더 낮아지는 경향을 보였고 적색도(a*)와 황색도(b*) 또한 사육 개월이 길어질수록 낮아졌다. 지방산 함량은 oleic acid(C18:1n9)가 47.7~53.2%로 가장 높았고, 사육 개월령이 증가할수록 포화지방산인 palmitic acid(C16:0)의 함량이 증가하였으며, stearic acid(C18:0)는 감소하였다. 필수지방산에서 가장 많은 함량을 차지하는 linoleic acid(18:2n6)은 사육 개월령이 증가할수록 함량이 높았다. 사육 개월령과 상관없이 재래흑염소 고기 내 불포화지방산의 함량이 포화지방산의 함량 보다 높게 나타났다. 본 연구결과는 재래흑염소 암염소의 연령별 고기 육질 및 이화학적 분석 결과를 제시함으로서 암염소들의 도태 기준을 설정하는데 활용 될 수 있을 것이다.

Keywords

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