Table 3.
Antioxidant activity of ME from leaves (L) and stems (S) of Helicteres vegae (Hv) and Heliopsis sinaloensis (Hs)a.
| Evaluated by |
||||
|---|---|---|---|---|
| Methanol extract | DPPHb | ABTSb | ORACb | β-carotene discoloration[1 mg/mL]c |
| Helicteres vegae | ||||
| Leaves (ME-LHv) | 32.20 ± 2.43# | 102.96 ± 8.55# | 270.92 ± 19.45* | 22.77 ± 0.03& |
| Stems (ME-SHv) | 176.19 ± 12.55ξ | 304.67 ± 10.25ξ | 1336.6 ± 90.03& | 45.02 ± 0.02ξ |
| Heliopsis sinaloensis | ||||
| Leaves (ME-LHs) | 51.57 ± 2.85& | 286.07 ± 11.20& | 865.63 ± 13.79# | 3.24 ± 0.006* |
| Stems (ME-SHs) | 16.81 ± 0.83* | 90.92 ± 6.84* | 321.83 ± 32.71* | 13.32 ± 1.60# |
| BHT | 88.38 ± 2.06δ | |||
a
Results are the mean ± standard deviation of three independent replicates. Different symbols in the same column show significant differences, p < 0.0001 (LSD: DPPH = 7.904; ABTS = 11.273; ORAC = 59.44; β-carotene discoloration = 5.35).
b
μmoles of Trolox Equivalents/g of flour on a dry weight basis (μmol TE/g d.w.).
c
Percentage of antioxidant activity (% AA).