생명과학회지 (Journal of Life Science)

  • 제19권8호
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  • Pages.1125-1131
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  • 2009
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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진달래꽃(Rhododendron mucronulatum Flos.) 추출물로부터 Helicobacter pylori 억제 효과를 가지는 phenol성 물질의 정제 및 동정

Purification and Identification of Phenol Compounds with Inhibitory Activity on Helicobacter pylori from Rhododendron mucronulatum Flos. Extracts

  • 주인식 (경북대학교 식품공학과) ;
  • 조영제 (경북대학교 식품공학과)
  • Ju, In-Sik (Department of Food Engineering Kyungpook National University) ;
  • Cho, Young-Je (Department of Food Engineering Kyungpook National University)
  • 발행 : 2009.08.30
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초록

진달래꽃을 60% ethanol로 추출하여 추출물의 H. pylori에 대한 저해활성의 측정과 저해물질의 분리 및 동정을 시행하였다. 또한 H. pylori균에 대한 항균활성은 60% ethanol 추출물에서 phenol 화합물을 200${\mu}g/ml$ 이상 주입하였을 때부터 22 mm이상의 clear zone이 관찰되어 H. pylori균에 대한 높은 항균력을 나타내었다. 저해물질의 분리는 Sephadex LH-20 column을 이용하여 분리한 결과 6개의 fraction으로 분리되었으며, H. pylori 저해활성을 나타낸 fraction D를 MCI-gel CHP-20 column을 이용하여 normal phase type인 ethanol 100%에서 0%로 농도를 감소시키며 용출한 결과 5개의 단일 물질 분획을 얻을 수 있었다. 그 중 세 가지의 물질에 대해 H. pylori저해활성이 나타나 FAB-MS, $^1H$와 $^{13}C$ NMR 및 IR spectrum을 사용하여 구조 동정한 결과 quercitrin (quercetin-3-O-rhamnopyranoside), myricitrin (myricetin-3-O-rhamnopyranoside) 및 quercetin인 것으로 확인되었다.

The antimicrobial activities of Helicobacter pylori as a functional food source with water and 60% ethanol extracts from Rododendron mucronulatum Turcz. flowers were examined. The total phenol content of 60% ethanol extracts (30.6${\pm}$0.14 mg/g) from Rododendron mucronulatum Turcz. flowers was higher than that of water extracts (23.2${\pm}$0.21 mg/g). The inhibitory activities of Rododendron mucronulatum Turcz. extracts on H. pylori was determined to clear zone of 15 mm in 80% ethanol extracts. Purification of inhibitory compounds was carried out in Sephadex LH-20 and MCI-gel CHP-20 column chromatography using a gradient procedure, with increasing ethanol(0${\rightarrow}$100%) in $H_2O$. The chemical structure of the purified inhibitory compounds of H. pylori was identified to be quercitrin (quercetin-3-O- rhamnopyranoside), myricitrin (myricetin-3-O-rhamnopyranoside), quercetin by FAB-MS, NMR and IR spectra.

키워드

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