Table 2.
Comparative analysis of total phenolic compounds and flavonoid content and DPPH radical scavenging of the crude extracts from leaves of Buchenavia tetraphylla.
| BTFA | BTFB | BTFC | BTFD | BTFE | BTFF | BTFG | BTFH | BTFI | |
|---|---|---|---|---|---|---|---|---|---|
| Yields (%) | 0.10 | 0.29 | 1.22 | 2.53 | 2.04 | 0.96 | 0.46 | 0.56 | 0.98 |
| Phenolic contents (μg GAE/μg) | 49.44 ± 1.86 a | 107.20 ± 7.23 b | 155.67 ± 3.40 c | 168.98 ± 1.81 c | 49.80 ± 6.52 a | 72.83 ± 1.13 d | 127.62 ± 15.60 e | 55.61 ± 3.01 a | 110.10 ± 0.62 b |
| Flavonoid contents (μg QE/μg) | 16.80 ± 1.76 a | 12.65 ± 0.76 a | 68.27 ± 2.35 b | 56.01 ± 4.52 c | 14.01 ± 1.72 a | 4.28 ± 0.11 d | 45.27 ± 3.37 e | 0.86 ± 0.21 d | 39.29 ± 2.36 e |
| DPPH (EC50 μg/mL) | 2480.22 | 562.75 | 50.41 | 237.76 | 4132.98 | 2355.09 | 294.38 | 2578.18 | 376.25 |
Legend: BTFA-BTFI: Fractions obtained from Buchenavia tetraphylla methanolic extract. In each row, the values with significant differences (p < 0.05) are indicated by different superscript letters (a, b, c, d, e). The results are expressed as the mean ± standard deviation calculated from three independent assays performed in triplicate (n = 3).