Isolation and purification of orientin and vitexin from Trollius chinensis Bunge by high-speed counter-current chromatography

Abstract

Orientin and vitexin are the two main bioactive compounds in Trollius chinensis Bunge. In this study, a rapid method was established for the isolation and purification of orientin and vitexin from T. chinensis Bunge using high-speed counter-current chromatography in one step, with a solvent system of ethyl acetate–ethanol–water (4:1:5, v/v/v). A total of 9.8 mg orientin and 2.1 mg vitexin were obtained from 100 mg of the ethyl acetate extract, with purities of 99.2% and 96.0%, respectively. Their structures were identified by UV, MS and NMR. The method was efficient and convenient, which could be used for the preparative separation of orientin and vitexin from T. chinensis Bunge.

Keywords::

• HSCCC
• orientin
• vitexin
• isolation
• purification
• Trollius chinensis Bunge

Acknowledgements

This work was supported by Guangdong Province Special Major Science and Technology Project (No. 2011A080503001) and the Industry-University-Research Cooperation Program from the Science and Technology Department of Qingyuan City (No. 2012D021211001).