Effects of tea catechins, epigallocatechin, gallocatechin, and gallocatechin gallate
, on bone metabolism.
The total ester-type catechins (TETC) is the total amount of ester-type catechins, including EGCG, epicatechin gallate (ECG), catechin gallate (CG), and gallocatechin gallate
Analysis of the phenolic constituents of shea kernels has demonstrated the presence of quercetin, trans-cinnamic acid, and eight catechins (gallic acid, catechin, epicatechin, epicatechin gallate, gallocatechin, epigallocatechin, gallocatechin gallate
, and epigallocatechin gallate), many of which are also found in green tea.
Condensed tannins are ogliomers or polymers (short or long chains) of flavan-3-ols, a family of small phenolic compounds including (+) catechin, (-) epicatechin, gallocatechin and gallocatechin gallate
, the four most commonly found in tannin chains.
The natural catechin components in green tea are epigallocatechin-3-gallate epicatechin epigallocatechin epicatechin-3-gallate and gallocatechin gallate
(Wang et al.
Green tea (Camellia sinensis) is a rich source of bioactive ingredients including a specific type of flavonoid known as catechins (GTCs) which include catechin, epicatechin, epigallocatechin, epicatechin-3-gallate, epigallocatechin gallate (EGCG), gallocatechin, catechin gallate and gallocatechin gallate
. Of these, EGCG has been the subject of much research and has in previous studies been shown to exert antidiabetic effects.
Our data showed that, in Green tea extract, there were 15 [micro]g/mg epigallocatechin, 95 [micro]g/mg epigallocatechin gallate, 20.8 [micro]g/mg epicatechin gallate, and 4.9 [micro]g/mg gallocatechin gallate
Plandai currently extracts gallate catechins from green tea, catechin gallate (CG), epigallocatechin gallate (EGCG), gallocatechin gallate
(GCG), and epicatechin gallate (ECG); carotenoids (lycopene) from tomatoes, as well as citrus bioflavonoids and limoniods.
Effects of tea catechins, epigallocatechin, gallocatechin and gallocatechin gallate
on bone metabolism.
Catechin components (active pharmaceutical ingredient) used for this study are comprised of epigallocatechin (2.22%), epigallocatechin gallate (57.48%), epicatechin (5.98%), epicatechin gallate (18.33%), gallocatechin (0.65%), catechin (1.74%), and gallocatechin gallate
In addition, four minor catechins are found in green tea leaves, including catechin (C), catechin gallate (CG), gallocatechin (GC), and gallocatechin gallate
To reach the conclusion, scientists exposed a group of cultured bone-forming cells (osteoblasts) to three major green tea components - epigallocatechin (EGC), gallocatechin (GC), and gallocatechin gallate
(GCG) - for several days.