A method of extracting and purifying an active substance from gingko leaf

摘要

The present invention relates to a method for extracting and purifying an effective physiologically active substance from ginkgo leaf. More particularly, the present invention relates to a method for extracting effective physiologically active substances which can be used for treatment of blood vessels and blood circulation disorders and geriatric diseases from ginkgo leaves without using harmful substances And extracting and purifying the active substance at a high concentration in a simple and economical manner.