Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Antibacterial Activities of Suaeda maritima Extract.

제주도 해홍나물(Suaeda maritima) 추출물의 항균활성

  • Moon, Young-Gun (Faculty of applied Marine Science & Marine and Environmental Research Institute, Cheju National University) ;
  • Song, Chang-Young (Faculty of applied Marine Science & Marine and Environmental Research Institute, Cheju National University) ;
  • Yeo, In-Kyu (Faculty of applied Marine Science & Marine and Environmental Research Institute, Cheju National University) ;
  • Kim, Gi-Young (Faculty of applied Marine Science & Marine and Environmental Research Institute, Cheju National University) ;
  • Heo, Moon-Soo (Faculty of applied Marine Science & Marine and Environmental Research Institute, Cheju National University)
  • 문영건 (제주대학교 해양과학대학 해양과학부, 해양과환경연구소) ;
  • 송창영 (제주대학교 해양과학대학 해양과학부, 해양과환경연구소) ;
  • 여인규 (제주대학교 해양과학대학 해양과학부, 해양과환경연구소) ;
  • 김기영 (제주대학교 해양과학대학 해양과학부, 해양과환경연구소) ;
  • 허문수 (제주대학교 해양과학대학 해양과학부, 해양과환경연구소)
  • Published : 2008.06.30
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Abstract

To develop natural food preservatives, methanol and water extracts were prepared from the Suaeda maritima and their antibacterial activities were examined against 12 microorganisms which were food borne pathogens bacteria, food poisoning microorganisms and food-related bacteria. Methanol extracts exhibited antibacterial activities for the 5 Gram positve and 7 Gram negative bacteria by agar diffusion method, The antibacterial activities and cell growth inhibition were investigated on each strain with the different concentrations of Suaeda maritima extracts. Antibacterial activities were shown in root, stem, furit extracts of Suaeda maritima. However stem and fruit extracts showed weak antibacterial activity against the tested microorganisms. Root extracts showed the highest antibacterial activities against microorganisms tested, such as Bacillus cereus,Bacillus subtilis, Vibrio parahaemolyticus, Staphylococcus aureus. The highest antibacterial activity against bacteria test was found in the methanol extract.

천연 항균소재로서의 천연물 연구는 대부분 식품으로 쓰이는 식물이나 약용식물을 대상으로 하여 많은 연구가 진행되어 왔으나 각 지방에 자생하는 식물에 대해서는 아직 연구가 미흡한 실정이다. 본 연구는 명아주과 식물에 속하는 제주도 자생식물인 해홍나물(Suaeda maritima)을 대상으로 하여 부위별로 물 추출물과 메탄올 추출물을 조제하여 식품유해미생물을 12종을 대상으로 하여 항균활성, 최소저해농도 및 생육저해율을 분석하였다. 해홍나물의 부위별 항균활성을 보았을 때 줄기나 열매 추출물보다는 뿌리 추출물에서 강한 항균활성이 나타남을 알 수가 있었다. 또한 물 추출물보다는 메탄올 추출물에서 더 강한 항균활성이 나타나는 것을 확인 할 수가 있어서 해홍나물의 주 항균성 물질이 물 보다는 메탄올 더 잘 녹는 물질로 추정된다. 특히 메탄올 추출물에서 그람 양성균인 B. cereus (61 %), B. subtilis (62%)와 그람 음성균 V. parahaemolyticus (62%), V. alginolyticus (59%), V. cholerae (56%)에서 55% 넘는 저해율을 나타내었다.

Keywords

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