METHOD FOR PRODUCTION OF LUTEOLINE Russian patent published in 1995 - IPC

FIELD: medicine. SUBSTANCE: flowers of dandelion are degreased by mixture of petroleum ether and acetone at ratio 9:1, ratio of raw materials and said mixture being 1:(2.5-3.5). Then extraction by 70 aqueous acetone is carried out, ratio raw materials and extragent being 1:3-4. The process is followed by washing sorbent with 20 acetic acid, extraction of sorbent which contains desired product and eluation by 96 ethanol. Then eluate is evaporated and its purification on polyamide takes place, mixture of chloroform and ethanol at ratio 8:2 being used as elutriating agent. EFFECT: simplifies the method, decreases its duration. 5 tbl