| abstract |
The invention provides an extract containing prodelphinidin and procyanidin of ginkgo. In the extract, the content of prodelphinidin and procyanidin is 88.7-98.5%, the content of total flavonoids is not higher than 10%, and the content of flavonol glycoside is not higher than 5%. The invention provides a preparation method of the above extract, comprising extracting with an ethanol water solution, hydrolyzing with beta-glucosidase, and adsorbing and separating by using macroporous resin and polyamide resin in sequence. The inventive extract containing prodelphinidin and procyanidin of ginkgo can be used as health food, medicine or cosmetic for preventing or treating cardiovascular and cerebrovascular diseases and ophthalmic diseases, resisting oxidation, caring skin and delaying aging. |