title: Chemotaxonomic study of medicinal Taxus species with fingerprint and multivariate analysis.
abstract: Species delimitation in Taxus has been controversial and it is very difficult to distinguish yew materials by their morphological characters. In this paper, a valid HPLC fingerprinting method coupled with multivariate analysis was used to define a framework for Taxus species identification and classification. Fingerprint-based similarity was employed for a chemotaxonomic study by hierarchical clustering analysis (HCA) and principal component analysis (PCA). Based on the PCA loadings, twelve chemical constituents were selected as chemotaxonomic markers which can be used to establish a more practical classification. Finally, eight studied species could be divided into six well-supported groups and most samples can be assigned to the correct species. Additionally, twelve markers were tentatively identified by LC/MS.
authors.affiliation: Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China.
authors.forename: Guang-Bo
authors.initials: GB
authors.lastname: Ge
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Zhang
authors.forename: Da-Cheng
authors.initials: DC
authors.lastname: Hao
authors.forename: Ying
authors.initials: Y
authors.lastname: Hu
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Luan
authors.forename: Xing-Bao
authors.initials: XB
authors.lastname: Liu
authors.forename: Yu-Qi
authors.initials: YQ
authors.lastname: He
authors.forename: Zheng-Tao
authors.initials: ZT
authors.lastname: Wang
authors.forename: Ling
authors.initials: L
authors.lastname: Yang
mesh_terms: D002851:Chromatography, High Pressure Liquid; D016000:Cluster Analysis; D015999:Multivariate Analysis; D025341:Principal Component Analysis; D012015:Reference Standards; D013045:Species Specificity; D020946:Taxus / Q000737:chemistry* / Q000145:classification