Table 2.
Antioxidant activity of the stem and marc extracts.
| Sample |
ABTS radical scavenging SC50 (μg/mL) |
Fe
3+
Reducing power RC50 (μg/mL) |
Fe
2+
Chelating capacity CC25 (μg/mL) |
NO Scavenging capacity SC 25 (μg/mL) | |
|---|---|---|---|---|---|
| Marc | Hexane | - | - | 173.3 ± 6.9c | - |
| Chloroform | - | - | 172.6 ± 9.9c | - | |
| Ehtyl acetate | 65.3 ± 0.4c | 160.0 ± 4.7c | - | 437.2± 0.5c | |
| Methanol | 10.6 ± 0.4b | 27.3 ± 0.1a | 426.1 ± 20.9d | 267.3± 32.4b | |
|
| |||||
| Stem | Hexane | - | - | 173.5 ± 4.1c | - |
| Chloroform | 138.7 ± 1.9d | - | 109.2 ± 10.3b | - | |
| Ethyl acetate | 64.2 ± 0.9c | 106.0 ± 1.4b | 124.1 ± 17.9b | - | |
| Methanol | 66.2 ± 2.5c | 140.9 ± 1.3b,c | 661.3 ± 2.3e | - | |
|
| |||||
| Quercetin | 3.6 ± 0.5a | ||||
| Ascorbic acid | 1.9 ± 0.4a | 5.4± 0.03a | 29.9 ± 0.7a | ||
| Na 2 EDTA | 5.0 ± 0.3a | ||||
ABTS·+ radical scavenging concentration (SC), Fe3+ reducing concentration (RC), Fe2+ chelating concentration (CC), NO Scavenging capacity (SC) of marc and stem extracts. Values (mean ± SDE, n = 3) in the same column followed by the same letter are not significantly different (Tuckey's test, p ≤ 0.05).