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Phenolic compound of tea waste
| Compounds | Phenolic content (mg/g DW)a | |
|---|---|---|
| Oven waste | Grade waste | |
| Catechins | ||
| Epicatechin | n.d. | n.d. |
| Epigallocatechin | n.d. | n.d. |
| Catechin | n.d. | n.d. |
| Gallocatechin | 4.6 | 3.9 ± 0.21b |
| Epigallocatechingallate | 1.0 | 0.9 ± 0.08b |
| Gallocatechingallate | n.d. | n.d. |
| Epicatechingallate | 0.2 | 0.31 ± 0.02a |
| Total catechins | 6.01 | 5.21 ± 0.28b |
| Total theaflavins | 16.0 ± 0.59b | 11.5 ± 0.50c |
| Gallic acid | 0.6 | 0.5 ± 0.03b |
| Caffeine | 16.5 ± 0.50b | 16.0 ± 1.29b |
Abbreviation: n.d., nondetected.
