Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Composition and Antioxidant Activity of Dried Laver, Dolgim

돌김의 조성 특성 및 산화방지 활성

  • Oh, Sujeong (Department of Food and Nutrition, Inha University) ;
  • Kim, Jeongin (Department of Food and Nutrition, Inje University) ;
  • Kim, Hyangsuk (Department of Food and Nutrition, Chungbuk National University) ;
  • Son, Soojeong (Department of Food and Nutrition, Inha University) ;
  • Choe, Eunok (Department of Food and Nutrition, Inha University)
  • 오수정 (인하대학교 식품영양학과) ;
  • 김정인 (인제대학교 식품영양학과) ;
  • 김향숙 (충북대학교 식품영양학과) ;
  • 손수정 (인하대학교 식품영양학과) ;
  • 최은옥 (인하대학교 식품영양학과)
  • Received : 2013.02.19
  • Accepted : 2013.06.10
  • Published : 2013.08.31
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Abstract

The composition and antioxidant activity of three kinds of dried laver were compared (ondolgim, bandolgim, and paraegim). Dolgim was high in protein (>35%), carbohydrates (>41%), and minerals (>7.5%). Lipid content in dolgim was very low (<1%); eicosapentaenoic acid was the most abundant fatty acid. There were higher levels of carotenoids than phycobilin in dolgim, and chlorophyll among pigments was present at the least amount. Porphyran content was high (>110 g/kg), while tocopherol content was very low (<12.0 mg/kg). Ondolgim had the lowest levels of carotenoids, phycobilin, and chlorophyll, however, polyphenol content was higher in ondolgim. The antioxidant activity was the same among the three kinds of dolgim, and both water and a 20% ethanol extract of dolgim showed higher antioxidant activity than did a 100% ethanol extract. The results suggested that dried laver dolgim was a good food and that all varieties provided both food and health functionality.

돌김은 단백질, 탄수화물 및 조회분 함량이 매우 높았으며, EPA가 전체 지방산 함량 중 53-55%를 차지하였다. 돌김의 색소 중 ${\beta}$-카로틴과 루테인을 포함하는 카로티노이드 함량이 피코에리트린과 피코시아닌을 포함하는 피코빌린 함량보다 높았으며 클로로필 a는 가장 적게 함유되었고 모든 색소는 반돌김과 파래김보다 온돌김에 적게 함유되었다. 돌김의 산화방지 성분 중 포피란 함량이 가장 높았으며 토코페롤 함량은 가장 낮았다. 파래김에 비해 온돌김과 반돌김의 폴리페놀 화합물 함량이 유의하게 높았으며 포피란 함량은 돌김의 종류에 관계없이 비슷하였다. 돌김의 종류 에 따른 큰 차이없이 물 또는 20% 에탄올 추출물은 100% 에탄올 추출물에 비해 유의하게 높은 라디칼 소거 활성을 나타냈다.

Keywords

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