Table 4.
Antioxidant activities of the isolated compounds.
| Items | ORAC (µmole TE/g) | TEAC (µmole TE/g) | FRAP (µM AAE/g) |
|---|---|---|---|
| 1 | 2588.2 ± 10.1 | 694.0 ±1.6 | 1217.4 ± 2.9 |
| 2 | 2233.9 ± 8.0 | 635.7 ± 0.8 | 2200.9 ± 14.2 |
| 3 | 735.4 ± 2.0 | 124.4 ± 0.6 | 1440.4 ± 9.1 |
| 4 | 559.7 ± 15.2 | 440.1 ± 1.5 | 1257.0 ± 6.7 |
| 5 | 2357.2 ± 0.1 | 862.2 ± 1.4 | 2262.9 ± 11.0 |
| 6 | 1502.5 ± 21.2 | 724.9 ± 1.3 | 1480.0 ± 3.9 |
| 7 | NA | NA | 347.8 ± 3.7 |
| 9 | NA | NA | 283.4 ± 3.9 |
| 8 | NA | NA | 778.9 ± 6.8 |
| 10 | NA | NA | 412.2 ± 13.0 |
| EGCG | 3976.8 ± 3.8 | 4146.4 ± 19.8 | 7525.0 ± 4.9 |
Not active (NA) at the test concentrations; epigallocatechingallate (EGCG). Trolox equivalent absorbance capacity (TEAC); oxygen radical absorbance capacity (ORAC); ferric-ion reducing antioxidant power (FRAP). The results are expressed as mean ± SEM for n = 3.