Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Biological activity of water-soluble polysaccharides from Cedrela sinensis according to extraction methods

참죽의 추출방법에 따른 수용성 다당류의 생리기능성

  • 오민희 (영남대학교 식품영양학과) ;
  • 황여진 (영남대학교 식품영양학과) ;
  • 윤경영 (영남대학교 식품영양학과)
  • Received : 2016.10.28
  • Accepted : 2016.11.25
  • Published : 2017.04.30
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Abstract

The biological activity of water-soluble polysaccharide (WSP) fractions extracted from Cedrela sinensis was examined in this study. Cedrela sinensis was extracted using hot water, ultrasonication, and enzymes (Viscozyme, Shearzyme) and precipitated using ethanol to produce crude polysaccharides. The yield (3.51%) and total polysaccharide content (28.03 g/100 g) of WSP extracted using Shearzyme (WSPs) were highest compared to other extracts. The antioxidant activity of WSP extracted using hot water was highest and had the lowest $IC_{50}$ values in DPPH, ABTS, hydroxyl radical scavenging activity, reducing power, and superoxide dismutase-like activity. Tyrosinase inhibitory activity increased as the concentration increased. All extracts showed higher retardation effects on glucose and bile acid compared to the control; particularly, WSPs showed a similar glucose retardation effect to carboxymethyl cellulose. This study suggests that WSP from C. sinensis can be used as a functional food material.

다양한 영양성분을 함유할 뿐만 아니라 생리활성이 우수한 참죽으로부터 수용성 다당류를 추출하고 이들의 생리기능성을 측정하였다. 이를 위해 참죽을 열수, 초음파 및 효소(Viscozyme, Shearzyme)를 이용하여 수용성 다당류를 추출하고, 추출법에 따른 수용성 다당류의 기능성을 비교하였다. Searzyme 효소로 추출하여 얻은 수용성 다당류 분획의 수율과 총당 함량이 가장 높았다. 참죽으로부터 추출된 수용성 다당류 분획의 산화방지 활성을 측정한 결과, 열수추출에 의해 얻은 수용성 다당류 분획물의 $IC_{50}$ 값이 가장 낮게 나타나 가장 높은 산화방지 활성을 보였다. Tyrosinase 저해활성은 측정 농도가 증가할수록 모든 추출군의 활성이 증가하였다. 포도당 흡수지연 효과를 확인한 결과, 모든 추출군은 포도당 흡수 지연 효과를 보였으며, 특히, WSPs는 대조구인 CMC의 포도당 흡수지연 효과와 유사한 값을 나타내었다. Bile acid 흡수지연 효과를 측정한 결과, bile acid의 투과율이 CMC에 비해 높아 흡수지연 효과가 낮은 것으로 나타났다. 이상의 연구 결과, 열수에 의해 추출된 수용성 다당류분획이 뛰어난 산화방지 및 미백활성을 보였으며, Shearzyme 효소추출물이 우수한 포도당 흡수저해 효과를 보였다. 이를 통해 참죽으로부터 추출된 수용성 다당류는 향후 기능성 식품 소재로서의 개발 가능성이 높을 것으로 판단된다.

Keywords

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