KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Antimicrobial Activity of Water-soluble Extract from Artemisia princeps var. orientalis

Artemisia princeps var. orientalis 수용성 추출물의 항균효과

  • 조화영 (포항공과대학교 환경공학부) ;
  • 윤성용 (포항공과대학교 환경연구소) ;
  • 박정진 (포항공과대학교 화학공학과) ;
  • 윤경원 (순천대학교 한약자원학과) ;
  • 박종문 (포항공과대학교 환경공학부)
  • Published : 2006.04.28
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Abstract

The importance of natural preservative has increased in recent years. The natural preservatives have been used in the field of foods, cosmetics and pharmacology. In the present work Artemisia sp., well recognized for their effect of antimicrobial activity, were extracted by methanol and water sequentially for selecting only water-soluble compounds that can be used as additives in food and cosmetics. Antimicrobial activities of water extracts from stem and leaf of Artemisia princeps var. orientalis were investigated by the disc diffusion method. Two gram positive bacteria(Staphylococcus aureus and Bacillus subtilis) and three gram negative bacteria(Escherichia coil, Agrobacterium tumefaciens and Pseudomonas putida) were used for antimicrobial activity studies. The water-soluble compounds from methanol extract showed higher antimicrobial activity than only water extract to these bacteria. Comparative evaluation of water-soluble metabolite profiles with caffeic acid that is known as an antimicrobial compound from Artemisia sp. was performed by high performance liquid chromatography with photo-diode array detection.

Artemisia princes var. orientalis의 수용성 추출물이 식품, 화장품, 의약품 등의 항균제로 이용될 수 있는지에 대해 연구 하였다. 순수한 물을 이용한 추출물에서는 항균성을 찾기 힘들었고, 쑥의 줄기와 잎 부분에서 메탄올로 추출한 후 물로 추출한 물이 Staphylococcus aureus에 대해서 항균성을 크게 나타냈으며, 잎이 줄기 부분보다 더 큰 항균성을 나타냄을 확인했다. 항균성을 갖는 물질을 밝혀내기 위해 쑥의 주된 항균 성분이라 알려진 caffeic acid와 비교 실험을 하였다. UV 특성곡선에서 caffeic acid와 유사한 phenolic compound의 profiling은 확인할 수 있었으나 caffeic acid의 disc diffusion method를 이용한 실험에서는 항균능력을 나타내지 않았다. 물질규명을 위해 추출물을 세 부분으로 분획 하였고, 이 중에서 Staphylococcus aureus에 대해 항균성은 UK 2에서 크게 나타났다. 본 연구는 Artemisia princeps var. orientalis 의 메탄올 후 물 추출물이 항균제로써의 가능성을 알아봄으로써 식품 또는 화장품의 보존료나 항균제의 이용성이 있음을 충분히 확인하였다.

Keywords

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