Latin Names: Camellia sinensis (L.)
Product Specification :50%~90% EGCG
Product Type: Yellow brown powdered extract
Part of the Plant Used :Leaf
Extract Method: Water/ Ethyl Acetate

What is green tea extract?

Green tea extract is a bioflavonoid rich, potent extract used primarily for fighting free radicals. It contains a high content of polyphenols, which are a class of bioflavonoids. Green tea extract contains a potent antioxidant, EGCG, which is over 200 times more powerful than vitamin E in neutralizing the pro-oxidants and free radicals that attack lipids in the brain. This important ingredient, Epigallocatechin Gallate (EGCG), protects against digestive and respiratory infections, helps to block the cancer promoting actions of carcinogens, protects against high total and LDL cholesterol levels, and blocks the attachment of the bacteria associated with dental cavities to the teeth.

Green tea extract helps with thermogenesis and aids in the metabolism of fat. Known for years as a powerful antioxidant, it may also be helpful in shedding fat. The most obvious benefit to dieters is that it works without increasing the heart rate most often found in diet aids. The increased heart rate leaves dieters jittery and eventually, most dieters stop using the supplement and gain weight back. Now through using green tea extract, dieters get the weight loss benefits without any of the jittery effects, especially in obese individuals with hypertension and other cardiovascular complications.

Tea polyphenols is natural compound extracted from tea. It is composed of more than 30 substance containing phenolic group,its chemical structure can be sorted four types: catechin type, flavone and flavonol type,anthocyanidin and procrypsis anthocyanidin type, phenolic acid type;among of them, type catechin is the most occupying 60%~80% of total phenols. Catechin type is composed of D,L-C,EC,EGC,EGCE,GCG,ECG and so on, the first three types are the simple catechin ( free type),the latter three types are the complex catechin (ester type). Catechin compound is apt to show oxidation,polymerization and condensation for containing more phenolic hydroxyl group, which is doomed to have fine ability of anti-oxidation and ability of clearing free radical.

Tea polyphenols extracted from tea is taken as natural antioxidant of food, it is used for grease and food containing oil, as continual intensive researching, it has been widely suitable for food, medicine,health products, chemical industry commodities. It's function as follows:anti-oxidation, anti-aging, anti- radiation, anti-ultraviolet,reducing blood fat,reducing blood sugar, anticancer and diseases of cardiovascular resisting, remove free radical, restraining pathogen and get ride of smell.

Where will be green tea extract use to?

• anti-oxidation
• anti-aging,
• anti- radiation
• reducing blood fat
• reducing blood sugar,
• anticancer and diseasesof cardiovascular resisting,
• remove free radical
• restraining pathogen

Traditional Usage:

Acute Breathing Disorders, Antibacterial, Anti-caries, Anti-inflammatory, Antioxidant, Antiseptic, Radiation Poisoning, Skin Disorders, Stimulant, Antispasmodic, Astringent, Breathing Disorders, Canker Sores, Cellular Regeneration, Cleansing/Detoxification, Diarrhea, Digestive Disorders, Drowsiness, Emphysema, Gingivitis, Indigestion, Liver Health Maintenance, Sunburn, Tooth Decay (prevention), Ulcers (Peptic), Ultraviolet Radiation (Sun) Protection, Vascular Disorders

Trial Clinical Study Results:

To evaluate the anti-caries effect of green tea, a group of 150 volunteers were randomly divided into 3 groups: A, B and C with 50 persons in each. People in test groups A and B were given a green tea polyphenol tablet whereas placebo was given to group C (tablets were taken three times daily). After 3 weeks, group A was given placebo and group B continued with polyphenols for 6 weeks. After using polyphenol tablets for 2 weeks, the plaque index of test groups were clearly lower than the control group (P < 0.01). After stopping use of the polyphenol tablet, the effect was still kept for 3 weeks. It can be concluded that polyphenol tablets from Chinese green tea have significant anti-plaque effect and can therefore help to prevent dental cavities.

Active Constituents:

Green and black tea leaves contain: methylxanthines - caffeine (theine), up to 4% with smaller amounts of theobromine and theophylline, as well as traces of adenine and xanthine; tannins. Polyphenols: tannins, mainly catechol tannins (10-20%); (-)-epicatechol, 4-gallocatechol, epigallocatechin gallate (EGCG) and other catechol gallates; flavan-3-ols and flavan-3.4-diols, as well as dimeric thea-flavins and oligomeric proanthocyanidins (thearubigenins); phenolic carboxylic acids such as gallic and chlorogenic acids, etc. Flavour substances: alcohols (hex-3-en-1-ol, benzyl alcohol, and 2-phenyl-ethanol, as well as linalool in black tea and geraniol in green tea.); essential oils (monoterpene aldehydes and alcohols); and theanine, the 5-ethylamide of glutamic acid. Other constituents: abundant flavonoids (including the apigenin derivatives isoschaftoside and vicenin-3); triterpenoid saponins; hydroperoxide lyases (anti-oxidant enzymes, and potent inhibitors of lipoxygenase). The accumulation of aluminum in tea leaves and the occasionally high content of fluorine compounds in older leaves are worth noting. Recent studies show that the residual green tea leaves remaining after tea is made are also rich in powerful antioxidants including (ranked according to suppressive activity against hydroperoxide generation): chlorophyll a > lutein > pheophytin a > chlorophyll b > beta-carotene > pheophytin b. [Wichtl and Bisset 1994; and Higashi-Okai K, Yamazaki M, Nagamori H, Okai Y. Identification and antioxidant activity of several pigments from the residual green tea (Camellia sinensis) after hot water extraction. J UOEH. 2001 Dec 1; 23(4): 335-44]
 

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