Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Evaluation of Angiotensin -I- Converting Enzyme Inhibitory Activity and Protein Changes of Enzymatic Hydrolysate Extracted from Hanwoo Loin and Round Myosin B

한우 등심과 우둔에서 추출한 Myosin B의 효소적 가수분해물의 단백질 변화와 Angiotensin -I- Converting Enzyme(ACE) 저해효과

  • Kim, Y.J. (Dept. of Animal Science and Institute of Agricultural Science and Technology, Chonnam National University) ;
  • Chin, Koo-Bok (Dept. of Animal Science and Institute of Agricultural Science and Technology, Chonnam National University)
  • 김영주 (전남대학교 동물자원학부 식육과학 연구실 및 농업과학기술연구소) ;
  • 진구복 (전남대학교 동물자원학부 식육과학 연구실 및 농업과학기술연구소)
  • Published : 2007.02.28
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Abstract

This study was performed to determine the protein profiles using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Angiotensin-I-converting enzyme(ACE) inhibitory activity (IC50) as affected by the various meat cuts, digestion times with pepsin. Hydrolysates having the protein concentration of 10 ug/mL had approximately 36∼39% ACE inhibitory activities, regardless of meat cut and digestion time. Protein concentration and ACE inhibitory activity of the diluted hydrolysate increased after 1-hr digestion. In original hydrolysates, ACE inhibitory activities of loin had higher than those of round (P<0.05). In addition, non-heated hydrolysates had higher ACE inhibitory activities than heated counterparts. When myosin B was digested by pepsin more than 1 hr, improved ACE inhibitory activities were observed as compared to the non-digested control.

본 실험은 한우 육단백질의 가수분해물로부터 항고혈압 활성을 측정하기 위하여 실시한 것으로서 한우 등심과 우둔으로부터 추출한 myosin B를 pepsin으로 가수분해하여 가수분해물들의 전기영동 결과, 가열처리와 가수분해 시간의 증가에 따라 단백질의 소실이 증가하였다. 항 고혈압 활성을 측정한 결과 10 ug/ml의 희석된 가수분해물의 ACE 억제효과는 1시간 이상 가수분해 시키면 약 40%의 억제율을 가졌다. 가수분해물 원액으로 ACE 억제효과를 살펴본 결과에서는 등심이 우둔보다 높았으며 (p<0.05), 비가열 가수분해물이 가열한 가수분해물 보다 억제율이 높게 나타났다 (p<0.05). 또한, 가수분해 시간별 처리구에서는 1시간 이상 가수분해 시키면 약 70% 이상의 억제율을 갖는 것으로 나타나 한우의 myosin B를 1시간 이상 가수분해하면 ACE 억제율이 증진되는 것으로 사료된다.

Keywords

References

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