Table 1.
Cathecin profile and gallic acid content of tea leaf extract treated with tyrosinase.
| Treatment | Tyrosinase activity (U) | Gallic acid (%) | EGC (%) | ECG (%) | EC (%) | EGCG (%) |
|---|---|---|---|---|---|---|
| Control | 8.12 ± 0.19 | 13.42 ± 0.23 | 22.45 ± 0.08 | 9.42 ± 0.31 | 9.41 ± 0.14 | |
| Tyrosinase | 111 | 8.19 ± 0.25 | 9.65 ± 0.38 | 12.66 ± 0.17 | 9.33 ± 0.13 | 9.37 ± 0.15 |
| 446 | 7.58 ± 0.29 | 8.84 ± 0.34 | 9.85 ± 0.2 | 9.04 ± 0.19 | 9.91 ± 0.19 | |
| 1785 | 6.82 ± 0.27 | 9.35 ± 0.26 | 13.21 ± 0.09 | 0.00 | 9.28 ± 0.03 | |
| Commercial black tea (BOP) | 11.05 ± 0.3 | 7.35 ± 0.31 | 7.56 ± 0.3 | 7.54 ± 0.1 | 7.84 ± 0.14 | |
Values are expressed as mean ± standard deviation of three replications.