Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effect of age on the contents of carnitine, free amino acid, and nucleotide-related compound in ribeye and top round from Holstein calf

연령이 홀스타인 육우송아지 등심 및 우둔의 카르니틴, 유리아미노산 및 핵산 관련 물질 함량에 미치는 영향

  • Cho, Soohyun (Animal Products Research and Development Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kang, Geunho (Animal Products Research and Development Division, National Institute of Animal Science, Rural Development Administration) ;
  • Seong, Pil-Nam (Animal Products Research and Development Division, National Institute of Animal Science, Rural Development Administration) ;
  • Park, Beomyoung (Animal Products Research and Development Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kang, Sun Moon (Animal Products Research and Development Division, National Institute of Animal Science, Rural Development Administration)
  • 조수현 (농촌진흥청 국립축산과학원 축산물이용과) ;
  • 강근호 (농촌진흥청 국립축산과학원 축산물이용과) ;
  • 성필남 (농촌진흥청 국립축산과학원 축산물이용과) ;
  • 박범영 (농촌진흥청 국립축산과학원 축산물이용과) ;
  • 강선문 (농촌진흥청 국립축산과학원 축산물이용과)
  • Received : 2014.10.14
  • Accepted : 2014.11.11
  • Published : 2014.12.31
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Abstract

This study was conducted to investigate the effect of age on the contents of carnitine, free amino acid, and nucleotide-related compound in Holstein calf meat. Twenty calves were allocated into four age groups (3, 6, 9, or 12 mon of age; n=5/group), and ribeye (M. longissimus dorsi) and top round (M. semimembranosus) were excised from left side of each carcass on day 1 post-mortem. Carnitine contents for ribeye and top round were 0.79~1.16 and 0.65~1.26 mg/100 g, respectively, and those showed a tendency to be the highest in 3 mon group. The contents of majority of free amino acids were the highest (p<0.05) in ribeye and top round from 12 mon group. The contents of adenosine monophosphate, inosine monophosphate, and inosine were the highest (p<0.05) in ribeye and top round from 12 mon group, but hypoxanthine content was the lowest (p<0.05) in those from 12 mon group. These findings suggest that age decreases the carnitine content but increases free amino acid and good taste-related nucleotides contents in Holstein calf meat.

본 연구는 연령이 홀스타인 육우송아지 등심 및 우둔의 카르니틴, 유리아미노산 및 핵산 관련 물질 함량에 미치는 영향을 구명하고자 실시하였다. 총 20두의 송아지들을 5두씩 4그룹으로 나누어 3, 6, 9, 12개월령까지 사육하여 도축한 후 좌도체에서 등심(ribeye; M. longissimus dorsi)과 우둔(top round; M. semimembranosus)을 시료로써 채취하였다. 카르니틴 함량은 등심과 우둔에 각각 0.79-1.16 및 0.65-1.26 mg/100 g 수준으로 함유되어 있었으며, 두 부위 모두에서 3개월령이 가장 높은 경향을 나타내었다. 유리아미노산 함량은 등심과 우둔 모두에서 대부분의 구성아미노산이 12개월령에서 가장 높았다(p<0.05). 핵산 관련 물질 함량 역시 등심과 우둔 모두에서 구아노신 일인산, 아데노신 일인산, 이노신 일인산 및 이노신이 12개월령에서 가장 높은 수준을 보였던 반면(p<0.05), 하이포크산틴은 12개월령에서 가장 낮았다(p<0.05). 따라서 연령이 증가함에 따라 홀스타인 육우송아지 고기의 카르니틴 함량이 감소했으나, 유리아미노산 및 좋은 맛과 관련된 핵산 물질의 함량은 증가하였다.

Keywords

References

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