What Is Ginkgo Biloba Extract Used For?
Ginkgo biloba leaf extract is the dried leaf extract of Ginkgo biloba, a plant of Ginkgo family. The main components are flavonoids and terpene lactones. It has many health functions and is widely used in food and cosmetics.
Apperance:Ginkgo biloba leaf extract is a light yellowish brown flowable powder, with its inherent aroma and bitter taste.
Specification: the common ratio of extract is 10:1, 20:1 or others.
Assay: According to the dry product, the total flavonoid content of Ginkgo biloba ≥24.0%.
chemical properties: The dry leaf extract of the genus Ginkgo biloba, the main components are flavonoids and terpene lactones.Chemical composition The chemical composition of Ginkgo biloba is complex, and flavonoids and terpene lactones are the two main active components of Ginkgo biloba.
Source: Ginkgo has been growing on the earth for about 200 million years and is known as a "living fossil". China is home to about 70 percent of ginkgo biloba, the seed of which is known as ginkgo and is commonly used as a Chinese herbal remedy for coughs, asthma and inflammation. Warm and humid conditions in summer and autumn are suitable for its growth, and it is prone to freezing in winter. It is mainly distributed in central and western China. There are also introductions in Japan and the United States.
Application fields: used in food,supplement and cosmetics.
Function: With a variety of health functions.
Beneficial for angina
Ginkgo biloba extract can activate blood, dilate blood vessels, increase blood flow, thereby promoting blood circulation and protecting brain cells. Decrease the content of high density lipoprotein and increase the activity of red blood cell enzyme.
Has certain antithrombotic effect
Ginkgo biloba extract has an inhibitory effect on platelets, has a certain antithrombotic effect, can remove free radicals, thus protecting the cell membrane, and produce a certain artery relaxation effect.
Skin whitening effect
Ginkgo biloba leaves contain flavonoid components to prevent the formation and deposit of pigment in the dermis, so as to whiten and prevent pigment. Trace elements in Ginkgo biloba leaves can remove oxygen free radicals and inhibit melanin growth.
Improve eye problems
Flavonoids in Ginkgo biloba can alleviate retinopathy. There are many possible causes of retinal damage, including diabetes and macular degeneration. Ginkgo helps maintain vision in patients caused by retinopathy.
5. It also has a certain adjustment effect on the circulatory system
It also promotes circulation to the brain and body. The primary health care function is to inhibit a substance called platelet activating factor (PAF), ginkgolide and ginkgolactone protect nerve cells of the central nervous system from damage during periods of ischemia. It has therapeutic effect on stroke patients. Ginkgo biloba extract regulates blood vessel tone and elasticity, which can make blood vessel circulation more efficient. This effect has the same effect on the arteries and capillaries in the circulatory system.
9. Improve arterial relaxation
Ginkgo biloba extract has an excellent tonic effect on the nervous system. The efficacy of Ginkgo biloba extract is useful for problems such as mental decline in elderly patients. Ginkgo biloba also has good effects on anxiety and depression, memory impairment, reduced alertness, mental decline, and dizziness.
Extraction Method:
The most widely used method is organic solvent extraction.Generally, ethanol is used as the extractant
Ethanol extraction-macroporous resin adsorption separation method.
Remove the impurities and moldy leaves, clean them and cut them up, extract them with 70% ethanol, separate the extract, filter them, recover the ethanol, separate the residue by centrifugation, and dilute them with pure water. To achieve the effect of color talk, then eluate with a certain concentration of ethanol, through hand collection, compression, vacuum drying these steps to complete
Acetone extraction-lead hydroxide precipitation method.
Ginkgo biloba leaves were extracted with 60% acetone, cooled and filtered, followed by extraction method, mixed with butyl ketone, separated to obtain ketone phase, mixed with solid ammonium sulfate, filtered out solid, evaporated under reduced pressure to obtain solid substance above 20% and below 60%, then diluted with 50% ethanol to 10% solid substance, added lead hydroxide to filter and precipitate. The liquid was compressed to half of the volume, and then the concentrated liquid was stirred by adding Chemicalbook into ammonia sulfate and butanone, and the butanone ethanol phase was precipitated after stirring. The butanone-ethanol phase is precipitated, evaporated under reduced pressure, and dried under vacuum.
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