What is green tea catechins powder antioxidants?
Green tea catechins powder antioxidants (tea polyphenol catechins) is a flavan-3-ol, a natural phenol and antioxidant. It is a secondary plant metabolite. It belongs to the group of flavan-3-ols or simply flavanols, part of the chemical family of flavonoids.
The rearch of green tea
The research aimed at finding the active compounds in green tea revealed that its protective effects are due chiefly to catechins. Tea contains four main catechin substances: EC, ECG, EGC, and EGCg, all of which are inclusively called catechin. Epigallocatechin gallate (EGCG) is the most powerful of these catechins. EGCG as an antioxidant is about 25-100 times more potent than vitamins C and E. One cup of green tea provides 10-40 mg of polyphenols and has antioxidant effects more excellent than a serving of broccoli, spinach, carrots, or strawberries.
Protecting the body from oxidative damage
The high antioxidant activity of green tea makes it beneficial for protecting the body from oxidative damage due to free radicals. Research shows that green tea may help the arterial wall by reducing lipids. Green tea can protect against experimentally induced DNA damage and slow or halt undesirable cell colonies’ initiation and progression. Studies show evidence that green tea provides immunoprotective qualities, particularly in patients undergoing radiation or chemotherapy. White blood cell count appears to be maintained more effectively in patients consuming green tea than non-supplemented patients.
Antioxidants catechins
The oxidation of catechins is minimal, and hence they can serve as antioxidants. Researchers believe that catechin is effective because it easily sticks to proteins, blocking bacteria from adhering to cell walls and disrupting their ability to destroy them. Viruses have ‘hooks’ on their surfaces and can attach to cell walls. The catechin in green tea prevents viruses from adhering and causing harm. Catechin reacts with toxins created by harmful bacteria (many of which belong to the protein family) and harmful metals such as lead, mercury, chrome, and cadmium.
Tannin in green tea
Tannin in green tea is mostly catechin and is a key component in its taste, providing astringency. The amount of catechin tends to increase as the season progresses. Spring tea (first crop) contains 12-13% catechin (13-17% as tannin) while summer tea (third crop) contains 13-14% (17-21% as tannin). If compare the leaf order, younger leaves include more catechin than mature ones. First leaves contain 14%, second 13%, third 12%, and fourth 12%.
Types of Catechins
Green tea catechins powder (tea polyphenol catechins) are a type of polyphenol and are the main astringency component in green tea, There are four main types of catechins found in green tea leaves.
- Epicatechin
- Epigallocatechin
- Epicatechin gallate
- Epigallocatechin gallate
In addition, during the manufacturing process for tea beverages, owing to heat processing, some catechins change form.
- Epicatechin → Catechin
- Epigallocatechin → Gallocatechin
- Epicatechin gallate → Catechin gallate
- Epigallocatechin gallate → Gallocatechin gallate
Catechin content
Fresh green tea has a catechin content of approximately 12-14%, while Nibancha has a catechin content of approximately 14-15%. The catechin content of young shoots is higher than mature leaves.
Green tea catechins powder antioxidants (tea polyphenol catechins) Benefits
- Control of obesity.
- It has a variety of prevention and treatment of cardiovascular disease, cancer prevention and other functions.
- Control blood pressure and blood sugar, lower cholesterol.
- Reducing capillary permeability, antidiarrheal, hemostatic, antiviral, fungicidal, ACE inhibition and prevention of gastric ulcer etc.
- Prevention of tooth decay.
- Used as antioxidants.
- Be used for dyes and tanning industry.
Specifications
Normal Catechins Specifications Sheet
| Tea Polyphenols | Catechins | EGCG | Caffeine | Pb | As |
| ≥ 30% | ≥ 15% | ≥ 5% | ≤ 8% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 40% | ≥ 20% | ≥ 8% | ≤ 8% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 50% | ≥ 30% | ≥ 12% | ≤ 12% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 80% | ≥ 60% | ≥ 30% | ≤ 12% | ≤ 2 ppm | ≤ 1 ppm |
| ≥ 90% | ≥ 65% | ≥ 40% | ≤ 12% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 90% | ≥ 70% | ≥ 40% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 95% | ≥ 70% | ≥ 45% | ≤ 10% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 95% | ≥ 75% | ≥ 45% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 95% | ≥ 75% | ≥ 50% | ≤ 6% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 98% | ≥ 75% | ≥ 45% | ≤ 8% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 98% | ≥ 80% | ≥ 50% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 98% | ≥ 80% | ≥ 60% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
Low Pesticide Residues Catechins Specifications Sheet
| Tea Polyphenols | Catechins | EGCG | Caffeine | Pb | As |
| ≥ 30% | ≥ 15% | ≥ 5% | ≤ 8% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 40% | ≥ 20% | ≥ 8% | ≤ 8% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 50% | ≥ 39% | ≥ 12% | ≤ 10% | ≤ 5 ppm | ≤ 2 ppm |
| ≥ 80% | ≥ 60% | ≥ 30% | ≤ 12% | ≤ 2 ppm | ≤ 1 ppm |
| ≥ 90% | ≥ 65% | ≥ 40% | ≤ 12% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 95% | ≥ 75% | ≥ 45% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 98% | ≥ 80% | ≥ 50% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 98% | ≥ 80% | ≥ 60% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
Remove Bitterness Catechins Specifications Sheet
| Catechins | EGC+EC | EGCG | Caffeine | Pb | As |
| ≥ 40% | ≥ 25% | ≥ 12% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
| ≥ 60% | ≥ 30% | ≥ 20% | ≤ 1% | ≤ 1 ppm | ≤ 1 ppm |
Shelf Life
2 Years
Storage
Store in tightly sealed containers then places in a cool and dry place while away from moisture, light, and oxygen.
Packing
- Packed in paper-drums and two plastic-bags inside. N.W:25kgs .I.D.35×H51cm.
- 1Kg/Bag (aluminum foil bag).
- Sample: double sealed water plastic bags inside with the aluminum bag outside.
Green tea components and effect
| Component | Effect | |
| Catechins | Decreases blood cholesterol Body fat reduction Cancer prevention effect Antioxidant Tooth decay prevention, antibacterial effect Anti-influenza effect Inhibits high blood pressure Anti-hyperglycemic effect Bad breath prevention (deodorizing effect) | |
| Caffeine | Increases alertness (decreases tiredness and drowsiness) Increases stamina Hangover prevention Mild diuretic | |
| L-Theanine | Neuronal cell protection Relaxation effect (promotes α wave production) Lowering of blood pressure | |
| Vitamins | Vitamin C | Maintenance of healthy skin and mucus membrane (collagen formation) Antioxidant |
| Vitamin B2 | Maintenance of healthy skin and mucus membrane | |
| Folic acid | Prevention of fetal neural tube defects (NTD) Prevention of arterial sclerosis | |
| β-carotene | Maintenance of nighttime vision | |
| Vitamin E | Antioxidant | |
| Saponins | Lowering of blood pressure Anti-influenza effect | |
| Fluorine | Prevention of tooth decay | |
| γ-aminobutyric acid (GABA) | Lowering of blood pressure | |
| Minerals (Potassium, calcium, phosphorus, manganese, etc.) | Biological regulators | |
| Chlorophyll | Deodorizing effect | |
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