Table 1.
Extraction yield, total phenolic content (TPC), total flavonoid content (TFC), and antioxidant capacity of I. viscosa leaves and stems methanolic or aqueous extracts. DPPH and ABTS EC50 of L-ascorbic acid are shown for comparison. IVLM: I. viscosa leaves methanolic extract; IVSM: I. viscosa stems methanolic extract; IVLaq: I. viscosa leaves aqueous extract; IVSaq: I. viscosa stems aqueous extract.
| Plant Extract | Extraction Yield (%) | TPC (µg GAE/g) |
TFC (µg QE/g) |
DPPH EC50 (µg/mL) |
ABTS EC50 (µg/mL) |
|---|---|---|---|---|---|
| IVLM | 16.5 | 726.4 ± 1.1 | 303.3 ± 8.8 | 145.7 ± 2.6 | 236.9 ± 22.2 |
| IVSM | 4.4 | 532.0 ± 10.3 | 114.0 ± 4.4 | 229.7 ± 3.1 | 239.0 ± 5.5 |
| IVLaq | 3.5 | 212.0 ± 1.5 | 79.8 ± 2.9 | 155.8 ± 6.1 | 268.9 ± 3.7 |
| IVSaq | 2 | 174.3 ± 0.7 | 45.2 ± 0.1 | 693.8 ± 3.4 | 791.0 ± 14.5 |
| L-Ascorbic acid | ─ | ─ | ─ | 27.5 ± 1.3 | 93.4 ± 0.9 |