Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Antioxidant Activity of Ripe Fruit Components of Rubus coreanus: Extraction Using Porous Polymer Resins

다공성 합성흡착제를 이용한 복분자 딸기(Rubus coreanus) 농축액의 항산화 효과

  • Choi, Se-Jin (Department of Food Science and Nutrition, Hallym University) ;
  • Lee, Yeon-Sil (Center for Efficacy Assessment and Development of Functional Foods and Drugs, Hallym University) ;
  • Kim, Jin-Kyu (Institute of Natural Medicine, Hallym University) ;
  • Chung, Cha-Kwon (Department of Food Science and Nutrition, Hallym University) ;
  • Kang, Il-Jun (Department of Food Science and Nutrition, Hallym University) ;
  • Lim, Soon-Sung (Department of Food Science and Nutrition, Hallym University)
  • 최세진 (한림대학교 식품영양학과) ;
  • 이연실 (한림대학교 식의약품 효능평가 및 기능성 소재개발센타) ;
  • 김진규 (한림대학교 천연의약연구소) ;
  • 정차권 (한림대학교 식품영양학과) ;
  • 강일준 (한림대학교 식품영양학과) ;
  • 임순성 (한림대학교 식품영양학과)
  • Received : 2010.10.25
  • Accepted : 2011.01.11
  • Published : 2011.04.30
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Abstract

This study was carried out to develop a method of removing unnecessary sugars and high-molecular weight soluble components from water extract by using various highly porous polymer resins: these resins are widely used as adsorbents for polyphenolic compounds. Each anthocyanin-rich fraction (ARF) that was eluted from column packed with 4 different resins (SEPABEADS SP207, 700, 850 and Diaion HP 20) was obtained from an aqueous extract of the ripe fruits of Rubus coreanus, which is well-known in Korea as "Bok-bun-ja". Among the above mentioned resins, Diaion HP20 had the highest efficacy and provided maximum yield of the ARF. The ARF eluted from the column packed with HP 20 exhibited the strongest antioxidant activity in vitro. Bioactive phytochemicals extracted from Rubus coreanus were investigated using the on-line HPLC-$ABTS^{{\cdot}+}$ system, and the resulting 6 peaks were identified as radical-scavenging components. By using liquid chromatography-mass spectrometry, 5 peaks were obtained, and these were identified as cyanidin-3-sambubioside, cyanidin-3-glucoside, cyanidin-3-xylosylrutinoside, cyanidin-3-rutinoside and pelargonidin-3-rutinoside. These results indicate that the use of appropriate porous resin (Diaion HP 20) leads to an increase in the yield of bioactive components and enhancement of their biological properties.

4종류의 다공성 합성흡착제(Sepabeads 207, 700, 850, Diaion HP 20)를 사용하여 Rubus coreanus 과실의 물 추출물로부터 과당 및 비polyphenol성분을 효과적으로 제거하여 DPPH라디칼 소거능 및 화학발광법을 이용한 superoxide 라디칼 소거능이 증가된 농축물을 효율적으로 얻을 수 있었다. 또한, 실시간 HPLC $ABTS^{{\cdot}+}$ 활성분석 시스템을 활용하여 6개의 항산화 능력을 갖는 활성피크를 확인할 수 있었으며 이들 대상으로 LC-MS/MS분석을 실시하여 5개의 anthocyanin인 cyanidin-3-sambubioside, cyanidin-3-glucoside, cyanidin-3-xylosylrutinoside, cyanidin-3-rutinoside, pelargonidin-3-rutinoside를 mass pattern 및 분자량 확인 과정을 통해 잠정적 화학구조 동정을 하였다. 수율과 항산화 효능을 고려해 볼 때, 4종의 합성흡착제 중에서 Diaion HP 20이 가장 우수한 결과를 나타내었다. 이처럼 적절한 합성흡착제의 선택으로 표적물질에 대한 polyphenol성 물질의 농축뿐만 아니라 생리학적 활성증대효과를 가져올 수 있어 적절한 합성흡착제의 선택은 식품 및 의약품의 정제 및 분리에 유용하게 활용될 수 있음이 확인되었다.

Keywords

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