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Tea Polyphenol

  • 98%

  • Brown Powder

  • BH

  • HPLC

  • 1KG

  • ISO/USDA Organic/EU Organic

  • Food Grade

  • 2 Years

  • Drum, Aluminum Foil Bag

  • Available

  • China

  • 5000 Kilograms/ Per Month


What's egc catechin?

Tea polyphenols is the general term for polyphenols in tea leaves. It is a white amorphous powder, easily soluble in water, soluble in ethanol, methanol, acetone, and ethyl acetate, but insoluble in chloroform. The content of tea polyphenols in green tea is relatively high, accounting for 15% to 30% of its mass. The main components of tea polyphenols are: flavanones, anthocyanins, flavonols and anthocyanins, phenolic acids and depsidic acids. Class 6 compounds. Among them, flavanones (mainly catechins) are the most important, accounting for 60% to 80% of the total tea polyphenols, followed by flavonoids, and other phenolic substances are relatively small.

Egcg polyphenol composition

Tea polyphenols are the main components that determine the color, aroma, taste and efficacy of tea leaves, accounting for 20% to 30% of the dry weight of tea leaves. Tea polyphenols are divided into four major categories according to their main chemical components: catechins, flavonoids, anthocyanins, and phenolic acids. Among them, catechins have the highest content, accounting for 60% to 80% of tea polyphenols. The catechins are mainly epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG) and epigallocatechin gallate (EGCG). Among them, gallocatechin (GC), epigallocatechin (EGC), epigallocatechin gallate (EGCG), epicatechin (EC), epicatechin gallate (ECG) 5 A compound is a key ingredient in tea quality control

Green tea epicatechin function

1. Antioxidant

Tea polyphenol is an excellent natural antioxidant, and its antioxidant properties are closely related to the synergistic effect of each component. The best combination is EGCG (epigallocatechin gallate): ECG (epicatechin gallate) gallate):EGC(Epigallocatechin):EC(Epicatechin)=5:2:2:1.

2. Regulate blood lipids

Tea polyphenols can comprehensively adjust blood lipids, especially reduce serum TG (triglyceride), TC (total cholesterol) and low-density lipoprotein cholesterol (LDL-C) levels, and increase high-density lipoprotein.

3. Antiviral and antibacterial effects

Tea polyphenols have been recognized by scholars in many countries in the world as a broad-spectrum, potent and low-toxic antibacterial drug. In numerous antibacterial tests, it has been found that it is effective against many pathogenic bacteria such as Proteus vulgaris, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mutans, botulinum, Lactobacillus, Vibrio cholerae and Streptococcus oralis, especially It has different degrees of inhibition and killing effect on intestinal pathogens. At the same time, it can effectively prevent antibiotic-resistant staphylococcus infection, and also has inhibitory activity on hemolysin. In addition, tea polyphenols also have a strong inhibitory effect on the pathogenic fungi that can cause human skin diseases, such as white ringworm on the head, psoriasis psoriasis, psoriasis white tinea and stubborn tinea. Tea polyphenols can also protect the beneficial bacteria in the gut.

4. Other functions

Tea polyphenol is a natural antioxidant with significant antioxidant effect, which can eliminate excessive free radicals produced in the human body, protect the structure of cell membranes, slow down human aging, and prolong human lifespan. Tea polyphenols have a unique protective and therapeutic effect on the skin, which can effectively prevent the damage of ultraviolet rays to the skin, as well as anti-aging and wrinkle removal, clearing brown spots, preventing acne, preventing edema and anti-allergies. In addition, tea polyphenols also have the effect of improving chronic renal failure and glomerulonephritis, as well as regulating immunity

Green Tea Extract Polyphenols COA

Analysis SpecificationResults
Assay(HPLC)EGCG ≥98%98.43%
Appearance White or off-white fine PowderComplies
Residual solventsEur.Phram.Complies
Heavy metals≤10ppmComplies
OdorCharacteristic Complies
Particle size100%through 80 meshComplies
Total of bacteria ≤1000cfu/gComplies
Yeast & Mold ≤100cfu/gComplies
Coli NegativeComplies
Storage     Store in cool & dry place. Do not freeze.
                 Keep away from strong light and heat.
Shelf life    2 years when properly stored

Egcg polyphenol extraction process

1. Organic solvent extraction method

2. Ion precipitation extraction method

3. Adsorption separation extraction method

4. Supercritical Fluid Extraction

5. Ultrasonic extraction method

6. Microwave leaching method