Doc:FL63AC
From Metabolomics.JP
Catechins refer to a subgroup of Flavan 3-ol derivatives (FL63AC). In a stricter sense, it means (+)-Catechin and its stereoisomer (-)-Epicatechin, both of which are naturally abundant.
| Structure | 
|
|
|
|
|---|---|---|---|---|
| Name | (+)-Catechin or D-Catechin |
(-)-Epicatechin or L-Epicatechin |
ent-Catechin or (-)-Catechin |
ent-Epicatechin or (+)-Epicatechin |
| B-ring stereo | ↓ | ↓ | ↑ | ↑ |
| 3-Hydroxyl stereo | ↑ | ↓ | ↓ | ↑ |
| Gallocatechins | (+)-Gallocatechin | (-)-Epigallocatechin | (-)-Gallocatechin |
Green Tea Composition
| Compound | Green tea | Black tea | Infusion (3min) |
|---|---|---|---|
| Proteins | 15 | 15 | trace |
| Amino acids | 4 | 4 | 3.5 |
| Fiber | 26 | 26 | 0 |
| Others, carbohydrates | 7 | 7 | 4 |
| Lipids | 7 | 7 | trace |
| Pigments | 2 | 2 | trace |
| Minerals | 5 | 5 | 4.5 |
| Phenolic compounds | 30 | 5 | 4.5 |
| Oxidized phenolics | 0 | 25 | 4.5 |
