Comparative study of different species of Epimedium based on HPLC fingerprint and multi-index assay
Objective:To investigate the source and quality of commercially available Epimedium based on HPLC fingerprint and multi-index assay,so as to provide reference for its quality evaluation and resource development.Methods:Forty batches of commercially available epimedium were collected.Fingerprint analysis and determina-tion of the total flavonoid glycosides were performed by HPLC method.The total flavonoid glycosides were deter-mined by UV method.And the contents of their extracts were determined.Stoichiometric analysis was employed to perform the comprehensive quality evaluation of different medicinal materials of Epimedium.Results:There were 9 different plant sources of Epimedium in the market.The five authentic Epimedium were of good quality,and the local varieties were coarse Epimedium.The contents were high in Epimedium from Hunan,while the contents were low in Epimedium from Qianling and Sichuan.The comprehensive quality ranking of Epimedium indicated that Epimedium Fletchum and Epimedium Fletchum ranked first by the principal component analysis method.The ranking of the same variety varied greatly with different habitats,and the Qianling Epimedium and adulterated Epi-medium ranked last.The results of cluster analysis and principal component analysis were basically consistent.The cluster analysis showed distinguishing significance in plant sources,habitats,processing methods and con-tents.Based on the common pattern of E.brevicornu,a total of 8 common peaks were identified for 9 species of E.Brevicornu,and their similarities ranged from 0.066 to 0.979.Differences were observed among different spe-cies.Conclusion:Both the fingerprint similarity and the chemical model of content determination can be used to evaluate the species and quality of Epimedium.
万方数据
维普
