Green tea extract is an active ingredient extracted from green tea leaves, mainly including tea polyphenols (catechins), caffeine, aromatic oils, moisture, minerals, pigments, carbohydrates, proteins, amino acids, vitamins and the like. Tea polyphenols have anti-oxidation, scavenging free radicals, etc., and significantly reduce the serum total cholesterol, triglyceride, low-density lipoprotein cholesterol content of hyperlipidemia, and at the same time have the effect of restoring and protecting vascular endothelial function. The hypolipidemic effect of tea polyphenols is also one of the main reasons why tea can make obese people lose weight without rebounding.

Tea polyphenols are the main component of green tea, accounting for about 30% of dry matter. GTP is extracted from tea and its by-products (tea, tea, coarse tea or pruned leaves). Since it was extracted only with food grade ethyl acetate, the original structure of GTP was retained and the product was a pale yellow powder. The main component is composed of catechin, which accounts for 60%~80% of the total GTP, including 4%~6% of epicatechin (L-EC) and 6%~8% of gallocatechin (DL). -EC), 10% to 15% epigallocatechin (L-EGC), 50% to 60% epigallocatechin gallate (L-ECG), and 8% to 10% caffeine. The GTP structure is rich in phenolic hydroxyl groups, which can provide active hydrogen to inactivate free radicals, and the free radicals formed by oxidation itself have higher stability due to the catechol structure. Therefore, GTP has the function of scavenging free radicals and inhibiting lipid peroxidation.