Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Pharmacognostical Studies on Korean 'Ho-Jang'(II) -Seasonal Variation of Oxyanthraquinones-

호장(虎杖)의 생약학적(生藥學的) 연구(硏究)(II) -Oxyanthraquinone의 계절적(季節的) 함량(含量) 변화(變化)-

  • Chi, Hyung-Joon (Natural Products Research Institute, Seoul National University) ;
  • Im, Dong-Su (Natural Products Research Institute, Seoul National University)
  • Published : 1975.03.15
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Abstract

The rhizomes of Polygonum cuspidatum, P. sachalinense and P. ellipticum which grow in Korea and which can be used for medicinal purpose were collected monthly from April to October and were analyzed for the contents of the free and combined derivatives of oxyanthraquinones. On the basis of the total oxyanthraquinone contents, the suitable month for collecting the rhizome of the former can be April or May, since it contained 0.46% in May and 0.05% in August. The rhizomes of the latter two species should be collected in June or July, since they contained $0.72{\sim}3%$ and $0.31{\sim}2%$ in April.

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