Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Antimicrobial Effect of Achyranthes japonica Nakai Extracts against Clostridium difficile

우슬 추출물의 Clostridium difficile에 대한 항균 효과

  • Jung, Sun-Mi (Department of Biological Engineering, Inha University) ;
  • Choi, Soo-Im (Department of Biological Engineering, Inha University) ;
  • Park, Sang-Min (Department of Biological Engineering, Inha University) ;
  • Heo, Tae-Ryeon (Department of Biological Engineering, Inha University)
  • 정선미 (인하대학교 생물공학과) ;
  • 최수임 (인하대학교 생물공학과) ;
  • 박상민 (인하대학교 생물공학과) ;
  • 허태련 (인하대학교 생물공학과)
  • Published : 2007.10.31
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Abstract

In this study, the ethanolic extracts of 40 species of traditional herbal medicines were examined for their antimicrobial activities against Clostridium difficile. Among the 43 screened traditional herbal medicines, Achyranthes Japonica Nakai (AJN), Siegesbeckia glabrescens Makino, and Phelloedendron amurense Ruprecht showed antimicrobial activities greater than 90% at a concentration of 500 ppm. According to the minimum inhibitory concentration (MIC) test the ethyl acetate soluble fraction of the AJN ethanolic extracts (AJNEA) showed the highest growth inhibitory activity against C. difficile, with a MIC of $625{\mu}g/mL$. In addition, the effect of AJNEA on the growth of lactic acid bacteria was investigated. AJNEA did not inhibit the growth of the tested Bifidobacterium spp. or Lactobacillus spp., with the exception of B. longum, Streptococcus thermophilus, and L. helveticus. These results indicate that AJNEA can be utilized as a potential antimicrobial agent against C. difficile related disease.

본 연구에서는 대장염 유발균인 C, difficile에 대한 항균활성이 우수한 천연항균물질을 검색하기 위하여 40여 가지 생약재 에탄올 추출물에 대하여 C. difficile에 대한 생육저해활성을 측정하였다. 결과, 우슬, 희첨, 황백은 1,000 ppm농도에서 90% 이상의 높은 항균 활성을 나타내었고, 우슬 에틸아세테이트분획물(AJNEA)은 가장 높은 활성을 나타내었으며 이의 최소저해농도(MIC)는 $625{\mu}g/mL$였다. 또한 기능성 소재로의 활용가능성을 확인하기 위하여 AJNEA의 유산균 생육에 미치는 영향을 조사한 결과, B. longum, L. helveticus와 S. thermophilus를 제외한 나머지 균주들에 대해서 생장 억제 효과를 나타내지 않았다. 이들 결과로부터 우슬 추출물은 C. difficile 관련 질환에 대하여 우수한 항균제제로 이용될 수 있을 것으로 확인되었다.

Keywords

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