Extraction and determination of tiliroside from Loropetalum chinense / 中草药

ABSTRACT

Objective: To research the separation, extraction, and quality control of tiliroside from Loropetalum chinense. Methods: The herbs were extracted using ethanol reflux extraction, and then through macroporous resin, depressure silica gel column chromatography, and elution, tiliroside monomer was obtained. Content was determined by the C18 column, mixture of methanol-0.1% phosphoric acid (5545) as mobile phase at 1.0 mL/min, and UV detection wavelength at 320 nm were used for the determination. Results: Tiliroside can be a good separation of the monomer, with the content of 98%; Tiliroside was better in linear relationship in the range of 0.041-0.513 μg (r = 0.9997). The recovery rate was 100.05%, RSD = 1.50%. Conclusion: Using this method, tiliroside can be better extracted and separated, Meanwhile the determination method is very stable and accurate, and has good repeatability, which can be used for the quality control of tiliroside from L. chinense.