Method for extracting Gingko extract from ginkgo leaves

Abstract

The invention discloses a method for extracting ginkgo leaf extract from ginkgo leaves, which includes steps of: mixing ginkgo leaves and solid-phase reagent according to quality ratio of 1 to 0.1-2, fully grinding the mixture in a ball mill, fetching out the grinded powder, adding water to dissolve, filtering, adjusting pH value of supernatant to 2.0-6.0, separating and purifying. The invention has advantages of no pollution, high product purity, less solvent residue, convenient operation, short production period, low production cost, and better popularization and application prospect.

Description

(1) Technical field

[0001] The invention relates to a method for extracting ginkgo extract from ginkgo leaves. (2) Background technology

[0002] The active ingredients in Ginkgo biloba extracts (GBE) are mainly flavonoids and lactones. Ginkgo biloba extract has a variety of physiological activities, among which the flavonoids are mainly quercetin, kaempferol, and isorhamnetin glycosides, which have vitamin P-like effects, not only reducing capillary permeability, but also dilating the crown. Blood vessels can significantly increase coronary flow and cerebrovascular flow, and can improve microcirculation, reduce myocardial oxygen consumption, and scavenge free radicals. It is widely used in the treatment and symptom improvement of cardiovascular and cerebrovascular diseases and senile dementia. Ginkgolide compounds are specific antagonists of platelet activating factor (PAF), and bilobalide has a good therapeutic effect on nervous system diseases.

[0003] There are many t...