Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Antioxidative Compounds in Aerial Parts of Potentilla fragarioides

양지꽃(Potentilla fragarioides) 지상부의 항산화물질

  • Choi, Yong-Hwa (Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology) ;
  • Kim, Myong-Jo (Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology) ;
  • Lee, Haeng-Soon (Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology) ;
  • Yun, Bong-Sik (Cell Function Regulator Research Unit, Korea Research Institute of Bioscience and Biotechnology) ;
  • Hu, Changxu (Phytopharmaceutical Laboratory, Institute of Botany, Academia Sinica) ;
  • Kwak, Sang-Soo (Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology)
  • 최용화 (생명공학연구소 식물생화학 Research Unit) ;
  • 김명조 (생명공학연구소 식물생화학 Research Unit) ;
  • 이행순 (생명공학연구소 식물생화학 Research Unit) ;
  • 윤봉식 (생명공학연구소 세포기능제어 Research Unit) ;
  • 호창서 (중국과학원 식물연구소) ;
  • 곽상수 (생명공학연구소 식물생화학 Research Unit)
  • Published : 1998.06.30
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Abstract

Six antioxidative compounds in the aerial parts of Potentilla fragarioides were isolated by a bioassay guided purification using a DPPH free radical. They were identified as (+)-catechin, isoquercitrin, quercitrin, $quercetin-3-O-{\beta}-D-glucopyranosyl-{\beta}-D-xylopyranoside$, caffeic acid, and 4-O-caffeoyl-L-threonic acid on the basis of $^{1}H$ and $^{13}C-NMR$ and MS data. The DPPH radical scavenging activity of five compounds $(RC_{50}:\;7.5{\sim}10.5\;{\mu}g)$ except for quercitrin $(16\;{\mu}g)$ was more effective than those of ${\alpha}-tocopherol$ $(12\;{\mu}g)$ and BHA $(14\;{\mu}g)$.

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