Green Tea Extract
Botanical Source: Camellia sinensis O. Ktze.
Specifications: Tea Polyphenols 25% to 98%; EGCG 45% to 98%.
Introduction:
A green tea extract is a herbal derivative from green tea leaves (Camellia sinensis). Containing antioxidant ingredients - mainly green tea catechins (GTC) - green tea and its derivatives are sometimes used as dietary supplementsand in alternative medicine.
Types of green tea extracts
1 Strong infusions
During the strong infusion green tea leaves are processed by soaking in the aqueous solution of alcohol (the aspect content is about 2% w/w).
2 Soft extracts
To obtain soft extracts, the solution made by strong infusion beforehand is further concentrated to 20-25% (the catechin content is about 20% w/w).
3 Dry extracts
After the strong infusions have been concentrated to 40-50% solids (the catechin content is above 25% w/w),they are sprayed and then become dehydrated extract and powder. The leftovers - water content, which is less than 5% w/w, and the extract - are usually processed as a powder containing inert processing aids to become suitable for a variety of uses (tablets, capsules, dry mixes, etc.).
4 Partly purified extracts
Further purification processes, for example, solvent extraction or column chromatography techniques, as well as new techniques such as membrane extraction and separation, are utilized in order to acquire a higher content of tea catechins.
Functions:
- Weight loss
- Preventing tooth decay
- Lowering cholesterol and blood pressure
- Fighting cancer
- Preventing inflammation
- Controlling blood sugar levels
- Preventing liver disease
- Slowing the aging process
- Fighting infection
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