Table 2.
Ginger Halia Bara’s antioxidant activities of FRAP, ABTS•+ and DPPH•.
| Drying | FRAP (mmol Fe (II)/g Dry Extract) |
ABTS•+ (mmol TEAC/g Dry Extract) |
DPPH IC50 µg/mL |
|---|---|---|---|
| Fresh | 1021 ± 29.7 d | 829 ± 44.0 c | 65.82 ± 6.83 a |
| Sun-dried | 4033 ± 29.9 a | 1712 ± 1.7 a | 14.69 ± 2.34 c |
| Oven-dried | 3584 ± 61.1 b | 1428 ± 51.8 b | 27.97 ± 1.92 b |
| Freeze-dried | 3219 ± 72.5 c | 1336 ± 72.8 b | 28.59 ± 0.83 b |
Values are mean (n = 3) ± standard deviation and different superscripts letters within the same column are significantly different at p < 0.05. FRAP = Ferric-Reducing Antioxidant Power, ABTS•+ = radical cation 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), and DPPH• = radical 1,1-diphenyl-2-picryl-hydrazyl.