Purification of Three Flavones from Chamaecyparis obtusa by Multi-Phase Extraction using Anion-Exchange Imidazolium Silica

摘要

This paper reports the application of a multi-phase extraction (MPE) method for the purification of three flavones from Chamaecyparis obtusa using silica-confined ionic liquids as the sorbent. 0,1 g silica, SilprlmCl, SilprMImCl, SilprEImCl and SilprBImCl sorbents were packed into separate empty polypropylene cartridges with 0.1 g C. obtusa powder. The multi-phase extraction conditions was water using a washing step and methanol using an elution step. When using different SilLs, SilprBImCl showed the best recovery. The amounts of quercetrin, myricetin and amentoflavone obtained were 33.69, 4.09 and 27.38 μg g~(-1), respectively.