Table 1.
Total phenolic content and antioxidant activity of P. friedrichsthalianum fractions.
| Fraction | Amount Isolated (g) | Concentration of Total Phenolics (mg GAE/100 g Fruit ± SD) * | Antioxidant Activity (mM Trolox Equivalent/kg Fruit ± SD) * |
|---|---|---|---|
| F.Ether | 6.9 | 25.94 ± 0.05 a | 0.16 ± 0.09 a |
| F.EtOAc | 5.9 | 138.08 ± 0.07 b | 0.85 ± 0.05 b |
| F.BuOH | 29.1 | 71.95 ± 0.05 c | 0.14 ± 0.01 a |
| F.aqueous | 200.8 | 92.32 ± 0.02 d | 0.02 ± 0.00 c |
| F.EtOAc.1 | 3.4 | - | 2.08 ± 0.11 d |
| F.EtOAc.2 | 1.0 | - | 10.99 ± 1.09 e |
| F.EtOAc.3 | 0.8 | - | 0.66 ± 0.01 f |
| F.EtOAc.4 | 0.6 | - | 0.40 ± 0.21 g |
| F.EtOAc.2.1 | 0.186 | - | 3.19 ± 0.13 h |
| F.EtOAc.2.2 | 0.199 | - | 0.22 ± 0.01 i |
| F.EtOAc.2.3 | 0.406 | - | 4.76 ± 0.22 j |
| F.EtOAc.2.4 | 0.226 | - | 3.09 ± 0.15 h |
| F.EtOAc.2.5 | 0.044 | - | 3.14 ± 0.04 h |
| F.EtOAc.2.6 | 0.020 | - | 2.76 ± 0.35 h |
| F.EtOAc.2.7 | 0.003 | - | 2.84 ± 0.46 h |
- Not determined. * Values are expressed as mean ± SD (n = 3); GAE: gallic acid equivalents. a–j Values in the same column/group followed by different letters are significantly different by ANOVA test (p < 0.05). F.Ether (ether fraction), F.EtOAc (ethyl acetate fraction), F.BuOH (butanol fraction), and F.aqueous (aqueous fraction).