The invention relates to application of total flavonoids of
pueraria lobata in preparation of medicines for treating repeated
ischemia. The problem that the total flavonoids of
pueraria lobata are extracted from
pueraria lobata and serve as the unique
active ingredient in the preparation of the medicines for treating repeated
ischemia can be effectively solved. The total flavonoids of pueraria lobata are prepared by the steps:
grinding the pueraria lobata into coarse
powder, performing
reflux extraction with ethyl
ether and
degreasing, and removing the ethyl
ether; volatilizing the ethyl
ether from decoction dregs of the pueraria lobata, adding
ethanol with a
mass concentration of 80% for soaking, performing
reflux extraction filtering, recovering the
ethanol from the filtrate under reduced pressure until any
alcohol does not exist, adding
distilled water to disperse until dispersion equivalent to 0.3g / mL of the raw
drug content is obtained, enabling the dispersion to pass through an AB-8 type
macroporous resin, sequentially eluting with the
distilled water,
ethanol with the
mass concentration of 10% and ethanol with the
mass concentration of 80%, collecting the 80% of ethanol eluent, performing reduced pressure
recovery on the ethanol until any
alcohol does not exist, performing
freeze drying, and
grinding, thereby obtaining the total flavonoids of pueraria lobata. According to the preparation method disclosed by the invention, the total flavonoids of pueraria lobata can be effectively extracted from the pueraria lobata and are effectively used for treating the repeated
ischemia, the novel application and medicinal values of the pueraria lobata are developed, and obvious economic and
social benefits are achieved.