METHOD FOR PRODUCING A DRY EXTRACT FROM GINKGO BILOBA LEAVES Russian patent published in 2022 - IPC A61K36/16 B01D11/02 A61K127/00 

FIELD: pharmaceuticals.

SUBSTANCE: invention relates to the pharmaceutical industry, namely, to a method for producing an extract of ginkgo biloba leaves. The method for producing a dry extract of ginkgo biloba leaves, including ultrasonic extraction with 70% ethyl alcohol, prior to extraction, ginkgo biloba leaves are ground to a particle size of 2 mm, the raw materials are extracted in an ultrasonic extractor at a raw materials:extractant ratio 1:5 for 90 minutes with ultrasonic oscillation frequency of 22 kHz at a specific power consumption of 22.2 W/l and continuous cooling with cold water supplied to the cooling jacket of the apparatus; after the specified time, the extract is drained, ethyl alcohol is removed by distillation; the residue is concentrated in a ball evaporating apparatus to a moisture content of 40 to 50%; the resulting mass is dried in a vacuum drying cabinet at a temperature of 50 to 55°C and then pulverised in a ball mill.

EFFECT: above method provides a possibility of increasing the content of biologically active compounds in the finished product.

1 cl, 3 ex