Study on the optimal harvesting time of Rumex gmelini by analyzing the contents of principal components
Cui, H-Hua.; Wang, Z-Yue.; Wang, Z-Quan.; Li, R-Ming.; Kang, Y-Hua.
Zhongguo Zhong Yao Za Zhi 30(11): 808-811
2005
ISSN/ISBN: 1001-5302 PMID: 16110856 Document Number: 587667
Objective: To establish a method used for optimization of harvesting time and determine the best time for harvesting Rumex gmelini. Method: An HPLC method was applied to determinate the contents of seven active constituents( resveratrol, polydatin, chrysophanol. 1-glucoside, nepodin, emodin, chrysophanol and physcion) of R. gmelini at different development stage. The result was analyzed by principal component analysis. Result: The accumulation of active constituents showed a regular pattern. Conclusion: The best harvesting time of R. gmelini is early July.