OBJECTIVETo study the technology of extracting flavonoids from Choerospondias axillaris by percolation.

METHODThe optimum extraction process was selected by orthogonal design, and the factors of concentration amount of ethanol and soaking time were investigated. Total flavonoids was determined by spectrophotometer to compare the effect of extraction.

RESULTThe optimum extraction process was that added 8 times 60% ethanol and then impregnated for 48 h.

CONCLUSIONThe technology is stable and feasible, it's suitable for industrial production.

Anacardiaceae ; chemistry ; Chemical Fractionation ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Flavonoids ; analysis ; isolation & purification