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Isolation of Antimicrobial Active Substance from Aristolochia tagala Champ. against Sclerotial Rot (Sclerotinia sclerotiorum)

이엽마두령(Aristolochia tagala Champ.)추출물로부터 균핵병 병원균(Sclerotinia sclerotiorum)에 대한 항균 활성물질 탐색

  • 김현상 (경북대학교 대학원 생태환경시스템학과) ;
  • 손진한 (한국한방산업진흥원 한방제품개발팀) ;
  • 최용화 (경북대학교 생태환경대학 생태환경시스템학부)
  • Received : 2015.11.06
  • Accepted : 2015.11.16
  • Published : 2015.12.31

Abstract

To develop environment-friendly agricultural products with anti-microbial activity against Sclerotinia sclerotiorum as a pathogen of sclerotium disease, Aristolochia tagala Champ. was extracted by methanol and its extract was fractionated into several solvent fractions. The chloroform fraction, which showed the highest antimicrobial activity, was separated by column chromatography and obtained forty three subfractions. The forty three fractions were searched the anti-fungal activities by bioassay. The most active No. 26 subfraction was analyzed by GC-MS. Each mass spectra, corresponding to each peak of chromatogram, was compared to MS database of Wiley library. As a result, 2,4-di-tetra-butyl-phenol, 2-mono-palmitin, 1-mono-stearin were profiled as maine compounds in No. 26 subfraction. Bioassay using commercial 1-mono-stearin to test for the anti-microbial activity conformed the antimicrobial active compound. In conclusion, 1-mono-stearin identified from Aristolochia tagala Champ. was antimicrobial chemical against Sclerotinia sclerotiorum.

본 연구는 균핵병의 원인균인 Sclerotinia sclerotiorum에 대해 항균활성을 갖는 친환경 유기농자재를 개발할 목적으로 이엽마두령(Aristolochia tagala Champ.)으로부터 활성물질 분리하였다. 이엽마두령을 MeOH로 추출하여 용매분획을 하였고, 용매분획 중에서 가장 강한 활성을 나타낸 $CHCl_3$ fraction을 column chromatography로 분리하여 43개의 subfraction을 얻었다. 43개의 subfraction을 bioassay한 결과 MYHS26 subfraction에서 강한 활성을 나타내었다. MYHS26 subfraction을 GC-MS로 분석하여 chromatogram 상의 주요 peak에 해당하는 mass spectrum과 Wiley library를 비교하여 profiling한 결과, 2,4-di-tetra-butyl-phenol, 2-monopalmitin, 1-mono-stearin이 주요 물질로 검출되었다. 항균활성물질로 추정되는 1-mono-stearin 화합물의 항균활성을 검정하기 위하여 표준품을 사용하여 생물검정한 결과 이 화합물이 강한 활성을 나타내었다. 따라서 이엽마두령으로부터 분리한 1-mono-stearin 화합물이 균핵병의 원인균인 Sclerotinia sclerotiorum에 대한 항균 활성물질인 것으로 추정되었다.

Keywords

References

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