한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제18권12호
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  • Pages.705-711
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  • 2017
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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비수리(Lespedeza cuneata G.Don) 추출물과 담금주의 이화학적 특성비교

Comparison of Physicochemical Properties between Extracts and Soaked Liquor of Lespedeza cuneata G.Don

  • Jeong, Kap-Seop (Department of Food Science & Nutrition, Tongmyong University)
  • 투고 : 2017.09.11
  • 심사 : 2017.12.08
  • 발행 : 2017.12.31
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초록

전국의 산야에 자생하는 야생 초본의 하나인 비수리(Lespedeza cuneata G.Don)의 천연물 자원으로서의 유용성에 대한 기초자료를 마련하기 위하여 비수리의 물과 에탄올 추출물의 몇 가지 이화학적 특성과 항산화 활성을 측정하고, 비수리 담금주의 결과와 비교하였다. 비수리 추출물의 유리 아미노산은 phosphoethanolamine을 비롯한 22종이 검출되었으며, 백분율 함량은 phosphoethanolamine 20.36>L-proline 18.02>ammonia 14.48>L-aspartic acid 12.96>${\gamma}$-amino-n-butyric acid(GABA) 10.67 % 등의 순서로 측정되었다. 총 플라보노이드와 총 페놀성 화합물의 함량은 담금주>증류수 추출물>에탄올 추출물의 순서로 비교되었다. 항산화 활성으로서 DPPH(1,1'-diphenyl-2-picrylhydrazyl) 라디칼 소거능에 기준한 전자 공여능은 담금주가 ascorbic acid의 81.4%로 가장 높았으며, 에탄올 추출물>증류수 추출물의 순서로 측정되었다. 철 환원력(ferric reducing antioxidant power)과 ABTS(2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) 라디칼 소거능은 담금주>증류수 추출물>에탄올 추출물의 순서로서 추출물 중의 플라보노이드와 페놀성 화합물 함량에 비례하였다. 그리고 아질산염 소거능은 전자 공여능의 순서와 같이 담금주>에탄올 추출물>물 추출물의 순서로 비교되었으며, 담금주의 경우 pH 1.2에서 96.6%로서 물 추출물의 2.6배에 해당되는 높은 소거활성으로 측정되었다.

Lespedeza cuneata (LC) is a herbaceous plant that grows throughout Korea. To investigate the physicochemical properties and the antioxidant activities of LC extracts and LC-soaked liquor (s. liquor), extraction with distilled water (DW) and ethanol was conducted and the extracts were compared with s. liquor. A total of 22 free amino acids from LC extract were detected, with the main ones being phosphoethanolamine 20.36>L-proline 18.02>ammonia 14.48>L-aspartic acid 12.96>${\gamma}$-amino-n-butyric acid 10.67%. The total flavonoid contents (TFC) and total phenolics contents (TPC) were in the order of s. liquor>DW>ethanol extract. The electron donating ability based on DPPH radical scavenging ability was highest for s.liquor, which equivalents 81.4% ascorbic acid in the order of s. liquor>ethanol>DW extract. The orders of ferric reducing antioxidant power and ABTS radical scavenging ability were proportional to the TFC and TPC of extracts, and in the order of s. liquor>ethanol>DW extract. The nitrite scavenging ability of s. liquor was highest among the three extracts (96.6% at pH 1.2), which was 2.6 times greater than that of DW extract.

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