Table 2.
Plant | Plant Part Used | DPPH (EC50 µg/mL) | # Antioxidant (%) |
---|---|---|---|
Drimia sanguinea | Bulb | 92.6 ± 4.34 d | 64.8 ± 1.05 c |
Elephantorrhiza elephantina | Rhizome | 5.8 ± 0.46 a | 84.7 ± 0.59 a |
Helichrysum paronychioides | Whole plant | 20.1 ± 0.42 b,c | 84.4 ± 0.69 a |
Senecio longiflorus | Stem and leaves | 12.1 ± 0.35 a,b | 75.3 ± 0.25 b |
Positive controls, Ascorbic acid = 3.9 ± 0.18 µg/mL (for DPPH assay); BHT = 89.8 ± 0.29% (for β-carotene-linoleic acid assay). # Extracts and BHT were tested at 400 µg/mL in the β-carotene-linoleic acid assay. In each column, values (mean ± standard error, n = 3) with different letter(s) are significantly (p ≤ 0.05) different based on Tukey’s Multiple Comparison Test.