title: Simultaneous determination of main taxoids in Taxus needles extracts by solid-phase extraction-high-performance liquid chromatography with pentafluorophenyl column.
abstract: A simple and accurate RP-HPLC method with pentafluorophenyl (PFP) column was developed for the simultaneous determination of six taxoids, i.e. paclitaxel, 10-deacetylbaccatin III (10-DAB III), 7-xylosyl-10-deacetyltaxol (7-xyl-10-DAT), 10-deacetyltaxol (10-DAT), cephalomannine and 7-epi-10-deacetyltaxol (7-epi-10-DAT), in the extracts from the needles of three Taxus species. The mobile phase consisted of acetonitrile (A) and water (B), and the extracts were separated using gradient elution program: 30% A at the first 7 min, and then ramped to 42% A at 8 min, held until 38 min. The developed method was validated with satisfactory precision (RSD < 2.61%), repeatability (RSD < 2.92%) and recovery (95.19-104.47%). The above taxoids in the extracts of Taxus cuspidata, T. chinensis and T. media were analyzed with the developed RP-HPLC method, and the results showed that the contents of different taxoids in three mentioned species were distinct. Maximal amounts of 10-DAB III, 7-xyl-10-DAT and 7-epi-10-DAT appeared in T. chinensis, while T. media possessed the highest content of 10-DAT, cephalomannine and paclitaxel. The developed method is accurate and efficient. It can be reliably used in the improved determination of taxoids for the quality control of Taxus species.
authors.affiliation: Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, People's Republic of China.
authors.forename: Yu-Jie
authors.initials: YJ
authors.lastname: Fu
authors.forename: Rui
authors.initials: R
authors.lastname: Sun
authors.forename: Yuan-Gang
authors.initials: YG
authors.lastname: Zu
authors.forename: Shuang-Ming
authors.initials: SM
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Thomas
authors.initials: T
authors.lastname: Efferth
authors.forename: Cheng-Bo
authors.initials: CB
authors.lastname: Gu
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.forename: Hao
authors.initials: H
authors.lastname: Luo
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D015394:Molecular Structure; D052616:Solid Phase Extraction / Q000379:methods*; D043823:Taxoids / Q000032:analysis* / Q000737:chemistry; D020946:Taxus / Q000737:chemistry*
chemical_list: D043823:Taxoids