Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Angiotensin- I Converting Enzyme Inhibitory Properties of Bovine Casein Hydrolysates in Different Enzymatic hydrolysis Conditions

효소가수분해 조건에 따른 우유 케이신의 Angiotensin-I 전환효소 저해효과

  • Published : 2002.03.01
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Abstract

Angiotensiri-I converting enzyme(ACE) catalyst the removal of the C-terminal dipeptide from the angiotensin-I to give the angiotensin-II, a potent peptide that causes constriction of regulation of blood pressure. Recently, ACE inhibitor peptides have been isolated from enzymatic digests of food protein. The aim of this study was to identify bovine casein hydrolysates with ACE inhibitory properties in different enzymatic hydrolysis conditions. The casein were hydrolyzed neutrase, alcalase, protamax, flavourzyme, premed 192, sumizyme MP, sumizyme LP and pescalase alone and with an enzyme combination. Premed 192 produced ACE inhibitory peptides most efficiently. In order to ACE inhibitory peptide produced enzymatic hydrolysis condition were premed 192 added to casein ratio of 1:100(w/w), and incubated at 47$\^{C}$ for 12hrs. Casein hydrolysate gave 50% inhibition(IC$\_$50/ value) of ACE activity at concentration with 248ug/ml(general method) and 265ug/ml(pretreatment method) respectively.

최근 고혈압을 예방하기 위한ACE 저해 펩타이드에 대한 연구는 주로 여러 가지 식품 단백질의 효소 가수분해물로부터 얻어진 펩타이드를 중심으로 이루어지고 있다. 본 연구에서는 케이신을 여러 가지 상업용 단백질분해 효소를 사용하여 ACE저해 효과가 높은 가수분해물 제조시 가수분해 조건이 ACE저해효과에 미치는 영향을 알아보자 하였으며 적정 가수분해 조건을 설정하고자 하였다. ACE 저해효과를 가지는 케이신 가수분해 물을 제조하기 위한 효소 종류, 첨가량 및 가수분해시간은 효소는 Aspergillus oryzae 유래의 promod 192를 사용하고, 효소의 첨가량은 케이신에 대하여 1%, 반응시간은 47$^{\circ}C$에서 12시간으로 하는 것이 적당하였다. 이 때 케이신 가수분해물의 $IC_{50}$/값은 248.71ug/m1(통상법), 265.84ug/ml(전처리법)로서 ACE 저해효과가 높았다.

Keywords

References

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