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The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Differential Inhibitory Effect of Artemisia Extract between Staphylococcus aureus and vaginal Lactobacillus spp

쑥 추출물의 포도상구균과 질 유산균에 대한 선택적 저해효과

  • Jung Hyun-Soo (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University) ;
  • Cha Min-Kyung (Department of Textile Engineering, Konkuk University) ;
  • Kwon Yoon-Jung (Department of Textile Engineering, Konkuk University) ;
  • So Jae-Seong (Department of Biological Engineering and Center for Advanced Bioseparation Technology, Inha University)
  • 정현수 (인하대학교 공과대학 생물공학과) ;
  • 차민경 (건국대학교 섬유공학과) ;
  • 권윤정 (건국대학교 섬유공학과) ;
  • 소재성 (인하대학교 공과대학 생물공학과)
  • Published : 2005.06.01
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Abstract

In this study, Artemisia mongolica fischer extract was examined for its possible differential inhibitory activity against pathogenic bacteria including Staphylococcus aureus and Lactobacillus spp. isolated from women's vagina. First, seven lactobacillus spp. were selected based on their in vitro high anti-staphylococcal activity. Various samples extracted using different concentrations of organic solvents (acetone, ethanol, methanol) were examined for optimal anti-staphylococal activity. When the Artemisia extract obtained using $100\%$ solvents was added to the cell suspension at $17\%$ (vol/vol), Lactobacillus sp. KLB 224 maintained its viability for 48 hr, whereas S. aureus was completely inactivated showing differential antimicrobial activity of the extract. Using scanning electron microscopy the effect of the extract on the cell morphology was observed: S. aureus showed markedly distorted cell morphology while Lactobacillus sp. KLB 224 appeared to remain intact.

본 연구에서는 우리나라 민속약이나 한방의 약재로 널리 사용되어 온 참쑥 (Artemisia mongolica fishcher)으로부터 추출한 쑥 추출물이 포도상구균 (Staphylococcu aurues)과 유산균 (Lactobacillus spp.)에 대해 선택적 저해 효과를 갖는지 조사하였다. 우선 항균 활성 실험을 통해 포도상구균을 저해하는 우수한 항균력을 가진 유산균 7균주를 선별하였다. 그리고 쑥을 추출한 용매의 종류, 농도 그리고 추출시간을 달리하여 쑥 추출물의 최적 농도 조건을 결정하였다. 생존율을 측정하기 위해 배양액에 각각 3일 동안 용매 $100\%$ (아세톤, 에탄올, 메탄올)로 추출한 쑥 추출물을 $17\%$ 첨가하였고, 이때 항균 활성 있는 유산균 KLB 224은 배양 48시간까지 생존하였다. 그러나 포도상구균은 동일한 조건에서 모두 사멸되었다. 또한 주사전자현미경 관찰을 통해 쑥 추출물이 세포 형태에 미치는 영향을 확인하였다. 그 결과, 포도상구균은 세포 형태가 심하게 손상되었지만 유산균은 저해를 받지 않고 세포형태를 유지함을 관찰하였다.

Keywords

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