Table 1.
Total polyphenols, total flavonoids, condensed tannins and antioxidant capacity (IC50/DPPH) for crude extract and fractions of V. megapotamica.
| Extract/fraction | TP ± SD (mg GAE/g) | TF ± SD (mg RE/g) | T ± SD (mg CaE/g) | IC50 ± SD (μg/mL) |
|---|---|---|---|---|
| Crude extract | 309.1 b ± 0.88 | 198.09 b ± 0.33 | - | 20.44 b ± 0.37 |
| Dichloromethane | 113.1 d ± 1.30 | 148.44 c ± 0.55 | - | 37.63 a ± 0.34 |
| Ethyl acetate | 522.4 a ± 1.12 | 220.48 a ± 0.30 | 3.86 ± 0.53 | 16.21 c ± 0.38 |
| Butanolic | 216.8 c ± 0.42 | 151.02 c ± 0.46 | - | 14.17 c ± 0.21 |
| Ascorbic acid | - | - | - | 14.86 c ± 0.28 |
Values are expressed as mean ± standard deviation. a–c Means with the different letters in each column are significantly different (p < 0.05) according to the Tukey test (n = 3).