Table 3.
Antioxidant properties of the tested extracts.
| Extracts | DPPH (mg TE/g) |
ABTS (mg TE/g) |
CUPRAC (mg TE/g) |
FRAP (mg TE/g) |
MCA (mg EDTAE/g) |
|---|---|---|---|---|---|
| S. gummiferum-MeOH | 10.24 ± 0.67 a,b | 51.91 ± 0.81 a | 53.20 ± 2.38 a | 33.32 ± 0.57 a,b | 15.93 ± 0.45 c |
| S. gummiferum-Water | 11.45 ± 0.77 a | 46.78 ± 1.03 b | 44.28 ± 1.18 b,c | 34.14 ± 0.14 a | 22.76 ± 0.36 b |
| S. transcaucasicum-MeOH | 5.51 ± 0.94 c | 43.46 ± 0.97 c | 48.07 ± 1.58 b | 32.44 ± 0.99 b,c | 14.38 ± 0.24 d |
| S. transcaucasicum-Water | 8.53 ± 0.38 b | 45.70 ± 0.88 b,c | 41.67 ± 0.33 c | 31.26 ± 0.52 c | 38.57 ± 0.93 a |
Values are reported as mean ± SD. ABTS: 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid; DPPH: 1,1-diphenyl-2-picrylhydrazyl; CUPRAC: Cupric reducing antioxidant capacity; FRAP: Ferric reducing antioxidant power; MCA: Metal chelating activity. MeOH: Methanol; TE: Trolox equivalent; EDTAE: EDTA equivalents. Different letters indicate significant differences among the tested extracts (p < 0.05).