Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Isolation of Iron and Calcium-Binding Peptides from Cottonseed Meal Protein Hydrolysates

면실박 단백질로부터 가수분해물 제조 및 철분, 칼슘 결합 펩타이드의 분리

  • Choi, Dong-Won (Department of Food Science & Technology, Chungnam National University) ;
  • Kim, Nam-Ho (Department of Food Science & Technology, Chungnam National University) ;
  • Song, Kyung Bin (Department of Food Science & Technology, Chungnam National University)
  • Received : 2012.07.13
  • Accepted : 2012.10.15
  • Published : 2012.12.31
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Abstract

Isolation of iron and calcium-binding peptides derived from cottonseed meal protein (CMP) hydrolysates was investigated. The degree of hydrolysis of CMP by Flavourzyme was monitored using trinitrobenzenesulfonic acid method and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Enzymatic hydrolysis of CMP for 12 h was sufficient for the preparation of CMP hydrolysates, and the hydrolysates were membrane-filtered under 3 kDa as a molecular weight. The filtered solution was fractionated using Q-Sepharose fast flow, Sephadex G-15, and reversed phase-high performance liquid chromatography for iron and calcium-binding peptides. As a result, F51 fraction was obtained as the best candidate for calcium and iron chelation, and the isolated iron and calcium-binding peptides can be used as functional food additives, similar to iron and calcium supplements.

면실박으로부터 단백질을 추출한 후 단백질 가수분해효소인 Flavourzyme으로 가수분해를 실시하여 면실박 단백질 가수분해물을 얻었고, 가수분해 정도는 trinitrobenzenesulfonic acid 방법과 Sodium dodecyl sulfate-polyacrylamide gel electrophoresis를 통해 측정하였다. 면실박 단백질 가수분해물은 한외여과에 의하여 3 kDa 이하로 cut-off하였고, Q-Sepharos fast flow, Sephadex G-15, reversed-phase high performance liquid chromatography를 이용하여 Fe, Ca-binding 펩타이드를 분리하였다. 그 결과 철분과 칼슘 결합력이 가장 높은 분획 51을 얻을 수 있었고, 이렇게 얻어진 Fe, Ca-binding 펩타이드는 향후 기능성 식품 소재로써 활용될 수 있다고 판단된다.

Keywords

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