가금류 중에서 연산오계는 예로부터 다양한 효능 지닌 건강기능식품으로 알려져 있다. 최근 육질 단백질로부터 유래한 기능성 펩타이드에 대한 연구가 활발하게 진행 되어 본 연구는 오계 다리육으로부터 표면 반응 분석을 이용하여 최적 공정을 수행하였다. 상업용 단백질 가수분해 효소 bromelain 1200을 이용하여 오계 다리육 단백질로부터 펩타이드 분자량을 가지는 단백질 가수 분해물 최적 제조 공정 조건을 표면반응 분석법을 이용하여 수행을 하였다. 제조 공정 변수들은 범위는 압력(30-100 MPa), 반응시간(1-3시간), 반응 기질 양(10-30%) 이었다. 가수분해도 최적 조건은 압력은 높을수록 증가를 하였고, 반응 시간은 시간은 3시간, 기질의 농도는 20%에서 결정이 되었다. 이때 최대 가수분해도가 34.10%이였다. 단백질 가수분해물은 대부분 펩타이드의 분자량인 1,000이하의 분자량 분포를 보여 주었다. 펩타이드의 유리 아미노산들의 함량은 leucine, lysine, alanine, glutamic acid, phenylalanine 순으로 존재하였고, 구성아미노산을 제외한 아미노산에서는 taurine(4.9%), ornitine(1.8%), anserine(1.6%), hydroxylysine(1.4%) 등의 순으로 존재하였다.
The purpose of this research was the optimization of protein hydrolysate production using a commercial enzyme bromelain 1200 derived from the leg of Yeonsan Ogae by response surface methodology. Yeonsan Ogae has long been known as supporting health and high efficacy treatment. In recent days, as the efficacy of functional peptides becomes more known, optimization of oligopeptide production and its characteristics from Ogae leg meat has been performed. Response surface methodology was performed for optimization of enzyme hydrolysis. The process was varied in pressure (30 to 100 MPa), time (1 to 3 h), and substrate concentration (10 to 30%). The degree of hydrolysis, amino acids, and molecular weight of products were analyzed. The optimum conditions were determined to be a pressure of 100 Mpa, time of 3 h, and substrate concentration of 20%. Under optimized conditions, degree of hydrolysis was 34.10%. The average molecular weight of protein hydrolysates was less than 1,000 Da. Major amino acids were leucine, lysine, alanine, glutamic acid, and phenylalanine.
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