Table 2.
Total tannin content of tea brands, the results were expressed in terms of TAE/g the of sample for three independent measurements (triplicate; n = 3, mean ± SD)
| Tea brands | TPCD1 mg TAE/g DW | TPCE2 mg/g DW | TTCF mg TAE/g DW |
|---|---|---|---|
| Green tea | 42.1 ± 0.41 | 34.6 ± 0.67 | 7.45 ± 0.23d |
| Black lion | 29.6 ± 0.52 | 23.2 ± 1.05 | 6.42 ± 0.53ab |
| Eirmon | 28.5 ± 0.31 | 21.8 ± 1.05 | 6.62 ± 0.77bc |
| Gumero | 33.3 ± 0.32 | 26.5 ± 0.52 | 6.81 ± 0.21bc |
| Abyssinia | 32.2 ± 1.04 | 25.5 ± 0.55 | 6.65 ± 0.84bc |
| Dire | 29.8 ± 0.31 | 24.2 ± 0.17 | 5.64 ± 0.39a |
| Addis | 29.8 ± 0.66 | 23.0 ± 0.67 | 6.90 ± 0.45bc |
| Wushwush | 31.5 ± 0.72 | 25.5 ± 0.48 | 6.0 ± 0.25ab |
Values in the same column that are followed by a different letters (a–d) are significantly different p < 0.05 by Duncan’s multiple range tests
TPCD1 is total polyphenol content expressed in terms of tannic acid equivalent per gram of dry weight before protein precipitation
TPCE2 is total polyphenol content expressed in terms of tannic acid equivalent per gram of dry weight after protein precipitation
TTCF is total tannin content expressed in terms of tannic acid equivalent per gram of dry weight