Table 2.
Antioxidant activity determined by the DPPH, ABTS, CUPRAC and HRSA assays of the bulb extracts from six Lilium species.
| Species | DPPH (TE µmol/100g) |
ABTS (TE µmol/100g) |
CUPRAC (TE µmol/100g) |
HRSA (%) |
|---|---|---|---|---|
| L. concolor | 455.31 ± 7.21 d | 1143.67 ± 11.28 a | 1025.14 ± 45.68 b | 40.86 ± 0.52 b |
| L. leucanthum | 507.64 ± 6.85 c | 889.38 ± 13.42 b | 799.34 ± 5.81 d | 36.64 ± 0.80 d |
| L. davidii var. unicolor | 404.48 ± 14.59 e | 848.49 ± 9.17 b | 595.61 ± 7.24 e | 22.45 ± 0.60 f |
| L. regale | 600.33 ± 2.24 a | 1173.28 ± 11.41 a | 1438.01 ± 16.56 a | 53.22 ± 0.99 a |
| L. lancifolium | 541.27 ± 3.43 b | 1075.51 ± 2.94 a | 842.04 ± 8.32 c | 26.85 ± 0.79 e |
| L. pumilum | 546.51 ± 9.77 b | 1091.96 ± 5.70 a | 1044.10 ± 11.30 b | 37.47 ± 0.82 c |
TE µmol/100 g represents micromoles of trolox equivalents per 100 grams of dry bulbs from six Lilium species for DPPH and ABTS free radical-scavenging capacity, and cupric-reducing antioxidant capacity (CUPRAC). Hydroxyl radical-scavenging activity (HRSA) was expressed as the percentage of free radical-scavenging activity (%). Values are expressed as means ± SD (n = 3). Means in the same column followed by different letters (a–f) are significantly different (p < 0.05).