Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Enzymatic preparation and antioxidant activities of protein hydrolysates derived from tuna byproducts

참치 가공부산물로부터 단백가수분해물 제조 및 항산화 활성 평가

  • Gyu-Hyeon Park (Department of Food Science and Technology, Keimyung University) ;
  • Jeong-Min Lee (Department of Food Science and Technology, Keimyung University) ;
  • Na-Young Lim (Department of Food Science and Technology, Keimyung University) ;
  • Syng-Ook Lee (Department of Food Science and Technology, Keimyung University)
  • Received : 2023.08.04
  • Accepted : 2023.09.25
  • Published : 2023.10.30
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Abstract

This study aims to investigate the production and characteristics of protein hydrolysates derived from tuna byproducts (TP) using various proteolytic enzymes and to compare the antioxidant activity of the resulting hydrolysates. The TP were subjected to enzymatic hydrolysis using five different proteases: alcalase, bromelain, flavourzyme, neutrase, and papain, and the antioxidant activities of the hydrolysates were evaluated. Subsequent analysis of the available amino group contents and sodium dodecyl sulfate-polyacrylamide gel electrophoresis patterns indicated a high degree of hydrolysis in TP after treatment with all the enzymes, except for papain. Based on the RC50 values obtained from four different antioxidant analyses, all the hydrolysates exhibited similar antioxidant activity, except for the flavourzyme hydrolysate, which showed significantly higher scavenging activity against ABTS radicals and hydrogen peroxide than the other hydrolysates. These findings suggest that protein hydrolysates derived from TP hold promise as potential sources of natural antioxidants.

본 연구에서는 참치 부산물을 활용한 항산화 신소재 개발의 가능성을 탐색하기 위해 부산물을 이용한 단백가수분해물 제조 및 항산화 활성을 평가하였다. 5종의 단백질 분해효소(alcalase, bromelain, flavourzyme, neutrase 및 papain)를 이용한 단백가수분해물 제조 시 12시간을 최적의 가수분해 시간으로 선정하였으며, 특히 alcalase, flavourzyme, neutrase의 가수분해도가 높게 나타났다. 이를 각 가수분해물의 수율과 비교하였을 때 유사한 경향임을 확인하였다. 각 효소제를 12시간 처리하여 제조한 단백가수분해물의 항산화 활성을 비교한 결과, TPF가 다른 가수분해물에 비해 유의적으로 높은 ROS(ABTS radical 및 H2O2) 소거 활성을 보이는 것으로 확인되었다. 또한 TPF는 hydroxyl radical에 의한 2-deoxy-D-ribose의 산화 및 linoleic acid의 과산화에 대해서도 우수한 억제 활성을 나타내었으며, 참치 가공부산물로부터 제조한 추출물, 밀웜 단백가수분해물 및 대두 단백가수분해물과의 ROS 소거 활성 비교 실험에서도 TPF가 상대적으로 우수한 활성을 보였다. 본 연구를 통해 참치 가공부산물을 이용한 항산화 소재개발 가능성을 확인할 수 있었으며, 본 연구 결과들은 수산가공부산물을 이용한 신규 생리활성 소재 개발용 기초연구자료로 활용될 수 있을 것으로 예상된다.

Keywords

Acknowledgement

본 연구는 교육부 대학혁신지원사업 K-Cloud College의 지원으로 수행되었다.

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