Microwave Assisted-extraction of Flavonols from Acanthopanax Senticosus Harms and High-performance Liquid Chromatography Analysis

Flavonols were extracted from Acanthopanax Senticosus Harms by Soxhlet extraction(SE),atmospheric pressure microwave-assisted extraction(AMAE) and pressurized microwave-assisted extraction(PMAE).The influences of experimental conditions,such as concentration of ethanol in the eluent,microwave irradiation time,etc.on the extraction yield were studied.Four flavonols(hyperin,rutin,quercitrin and quercetin) in the extracts were determined quantitatively by HPLC method.The experimental results demonstrate the ad...