Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Evaluation of Antimicrobial, Antithrombin, and Antioxidant Activity of Fritillaria thunbergii Miquel

패모(Fritillaria thunbergii Miquel)의 항균,항혈전 및 항산화 활성 평가

  • Shin, Yong-Kyu (Research Institute of Biotechnology, Bion Co., LTD.) ;
  • Jang, Han-Su (Gyeongbuk Institute for Bioindustry) ;
  • Kim, Jee-In (Dept. of Biological Science, Andong National University) ;
  • Sohn, Ho-Yong (Dept. of Food and Nutrition, Andong National University)
  • 신용규 ((주)바이온 생물공학 연구소) ;
  • 장한수 (경북바이오산업연구원) ;
  • 김지인 (안동대학교 생명과학과) ;
  • 손호용 (안동대학교 식품영양학과)
  • Published : 2009.09.30
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Abstract

Beimu (Fritillaria thunbergii Miquel), a bulbous plant of Liliaceae found in Korea, Japan and China, has been used as an antitussive and expectorant agent, and is also useful in alleviating stonsillitis and bronchiolitis. Most researches have been focused on micro-propagation and plant regeneration, component analysis, and dormancy relieving of beimu. Reports regarding the biological activity of beimu, such as anti-Helicobacter pyroli or platelet aggregation inhibition activity, are few and not widely available. In this study, methanol extract and its organic solvent fractions were prepared from Fritillaria thunbergii Miquel and their antimicrobial, antithrombin, and antioxidant activities were evaluated, respectively. The methanol extract contained lots of water-soluble materials (58.98%) and hexane-soluble oils (14.85%). The ethylacetate and butanol fraction at $500{\mu}g$/disc concentration showed strong antibacterial activity against tested bacteria, except Escherichia coli. Antifungal activity was not observed in methanol extract and its fractions. The hexane, ethylacetate and butanol fractions showed strong antithrombin activity at 4.8 mg/ml concentration. Especially, the ethylacetate fraction showed 95.4 sec of thrombin time at a concentration of 1.2 mg/ml, which is comparable to aspirin, a widely used antithrombosis agent. For antioxidation activity, the ethylacetate and butanol fraction showed good 1,1-diphenyl-2-picryl hydrazyl scavenging activity ($IC_{50}$ of $344{\sim}368{\mu}g$/ml). In superoxide dismutase-like activity and reducing power, the fractions showed $20{\sim}25%$ of vitamin C, and $51{\sim}54%$ of butyl hydroxytoluene, respectively.

패모는 한국, 일본, 중국 지역에 분포하는 백합과 인경식물로 오래전부터 진해, 거담제 및 편도염, 기관지염에 이용되어 왔다. 그러나, 오랫동안 진행되어 온 기내배양, 휴면타파, 성분분석에 대한 연구와 달리 생리활성에 대한 연구는 거의 없는 실정이다. 본 연구에서는 패모로부터 메탄올 추출물을 조제하고, 이로부터 다양한 유기용매 분획물을 조제하여 이들의 항균, 항혈전 및 항산화 활성을 평가하였다. 패모의 메탄을 추출물은 다량의 수용성 당을 포함하고 있으며(물 잔류물 58.98%), 지용성 오일도 상당량 포함하였다(헥산 분획물 14.85%). 항균활성의 경우, 에틸아세테이트 및 부탄올 분획물 $500{\mu}g$/disc에서 E. coli를 제외한 실험세균 모두에서 우수한 항세균 활성이 나타났으며, 항진균 활성은 모든 시료에서 나타나지 않았다. 항혈전 활성은 메탄올 추출물에서 우수하였으며, 헥산, 에틸아세테 이트 및 부탄올 분획물은 2.4 mg/ml 농도에서 모두 300초 이상의 연장된 트름빈 타임을 나타내었고, 특히 에틸아세테이트 분획은 1.2 mg/ml 농도에서 95.4초를 나타내어 항혈전제인 아스피린 활성과 유사하였다. 메탄올 추출물 및 분획물의 항산화 활성 평가 결과, 에틸아세테이트 분획 및 부탄올 분획이 368.2 및 $344.0{\mu}g$/ml의 $IC_{50}$를 나타내어 우수한 DPPH 소거능을 나타내었으며, SOD 유사활성은 $55{\sim}63%$로, vitamin C의 20-25%, 환원력의 경우 BHT의 51-54%를 나타내어 우수한 항산화 활성을 가짐을 확인하였다.

Keywords

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