Table 2.
Radical scavenging activity (DPPH assay), ascorbic acid equivalent antioxidant capacity (AEAC) and chelating activity (FIC assay) of the bark and leaves of C. pyramidalis Tul. and S. glandulosum (L.) Morong.
| Control/Species Name | Part used | Yield | Antioxidant activity (AOA) | ||
|---|---|---|---|---|---|
| DPPH free radical scavenging | FIC assay IC50 (µg/mL) | ||||
| IC50 (µg/mL) | AEAC (mg AA/100 g) | ||||
| Rutin | - | - | 22.96 ± 1.99 b | 70.65 ± 6.09 a | - |
| EDTA | - | - | - | - | 15.26 ± 0.58 a |
| Caesalpinia pyramidalis Tul. Catingueira | Bark | 11.54% | 16.98 ± 1.34 a | 95.40 ± 7.75 b | 527.44 ± 37.73 b |
| Leaves | 26.78% | 38.93 ± 0.71 c | 41.41 ± 0.76 c | 62.49 ± 10.77 c | |
| Sapium glandulosum (L.) Morong. Burra-leiteira | Bark | 16.30% | 183.45 ± 7.60 d | 8.80 ± 0.37 d | 2152.98 ± 490.38 d |
| Leaves | 24.28% | 58.55 ± 6.35e | 34.11 ± 2.39 c | 127.10 ± 9.44 e | |
Means followed by the same letter in a column do not differ significantly (n = 6, p <0.05).