Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Studies on the characteristics of concentrated soy protein

농축 콩단백질 분리 및 추출에 관한 연구

  • Cha, Seo Hui (Department of Food Science and Biotechnology, Sahmyook University) ;
  • Shin, Kyung-Ok (Department of Food and Nutrition, Sahmyook University) ;
  • Han, Kyoung-Sik (Department of Food and Nutrition, Sahmyook University)
  • 차서희 (삼육대학교 식품생명산업학과 대학원) ;
  • 신경옥 (삼육대학교 식품영양학과) ;
  • 한경식 (삼육대학교 식품영양학과)
  • Received : 2020.07.14
  • Accepted : 2020.09.16
  • Published : 2020.10.31
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Abstract

The purpose of this study was to investigate the nutritional characteristics of selected soybeans grown in Korea to isolate concentrated proteins. Examination of the general characteristics revealed that the pH and apparent density of Phaseolus radiatus L. protein and concentrated Vigna angularis protein were significantly higher than those of other concentrated soy proteins. The water absorption capacity was high for concentrated Pisum sativum L. protein, whereas the oil absorption capacity was high for concentrated Glycine max (L.) Merr. protein. The emulsifying activity and emulsifying stability were higher and significantly higher, respectively, for enriched P. radiatus protein. Considering the functional characteristics of concentrated soy protein, its application as a food material in the meat product industry in Korea may be of potential value.

본 연구는 우리나라에서 재배되는 대두, 녹두, 적두 및 완두 4종의 콩 원물을 선발하여 단백을 추출한 후 얻은 농축콩단백의 영양학적 및 기능적 특성을 분석하여 4종 단백 소재의 품질 특성을 알아보고자 하였다. 4종 농축콩단백의 영양학적 특성을 살펴본 결과, 단백질 함량은 72.58-78.69%로 나타났고, 아미노산의 함량은 4종 농축콩단백 모두 aspartic acid, glutamic acid, lysine에서 높은 함량을 나타났으며, 농축녹두단백의 총 필수 아미노산 함량이 3종 농축콩단백에 비해 유의하게 높았다(p<0.05). 4종 농축콩단백의 기능적 특성을 알아본 결과, pH와 겉보기 밀도는 농축녹두단백과 농축적두단백이 다른 농축콩단백에 비해 유의하게 높았고(p<0.05), 수분흡수력은 농축완두단백이, 유지흡수력은 농축대두단백이, 유화 활성은 농축녹두단백이, 유화안전성은 농축녹두단백과 농축완두단백이 다른 농축콩단백에 비해 유의하게 높았다(p<0.05). 따라서 본 연구를 종합해 볼 때, 4종 농축콩단백의 각 기능적 특성을 고려하여 대체육 제품 산업에 적용한다면, 식품소재로서 활용가치가 있을 것으로 판단된다.

Keywords

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