Table 2.
Assays on antioxidant activity of GSE and PSE
| GSE | PSE | |
|---|---|---|
| Sample concentration (mg/L) | DPPH radical scavenging activity | |
| 100 | 70.29 ± 0.59 a | 31.90 ± 0.36 a |
| 200 | 77.23 ± 0.84 b | 38.79 ± 0.59 b |
| 300 | 85.01 ± 0.86 c | 51.46 ± 0.96 c |
| 400 | 86.05 ± 0.30 cd | 55.65 ± 0.49 d |
| 500 | 87.02 ± 0.44 d | 61.43 ± 0.59 e |
| Sample concentration (mg/L) | ABTS•+ radical scavenging | |
| 50 | 26.99 ± 12.58 a | 4.77 ± 2.92 a |
| 100 | 308.66 ± 11.81 b | 21.16 ± 4.40 b |
| 200 | 600.05 ± 4.59 bc | 44.49 ± 3.81 c |
| 300 | 607.55 ± 6.03 cd | 61.72 ± 2.54 d |
| 400 | 617.27 ± 6.31 cd | 84.22 ± 8.00 e |
| 500 | 618.94 ± 1.27 d | 138.38 ± 2.92 f |
| 600 | 622.99 ± 2.40 d | 149.22 ± 2.09 g |
| Sample concentration (μg/mL) | Ferric reducing antioxidant power | |
| 100 | 0.24 ± 0.005 a | 0.07 ± 0.003 a |
| 200 | 0.37 ± 0.040 b | 0.08 ± 0.001 a |
| 300 | 0.55 ± 0.007 c | 0.10 ± 0.004 b |
| 400 | 0.72 ± 0.006 d | 0.12 ± 0.001 c |
| 500 | 0.84 ± 0.022 e | 0.13 ± 0.005 d |
| Sample concentration (mg/mL) | Metal chelating activity | |
| 0.5 | 15.45 ± 0.49 a | 6.28 ± 0.44 a |
| 1.0 | 28.30 ± 0.70 b | 14.24 ± 0.83 b |
| 1.5 | 45.24 ± 0.57 c | 29.27 ± 1.02 c |
| 2.0 | 55.30 ± 0.08 d | 40.22 ± 0.92 d |
| 2.5 | 63.11 ± 0.31 e | 51.91 ± 1.47 e |
| 3.0 | 76.92 ± 1.56 f | 62.31 ± 0.30 f |
| Sample concentration (mg/L) | Lipid peroxidation inhibition (%) | |
| 500 | 67.67 ± 0.56 a | 46.43 ± 0.84 a |
| 750 | 73.22 ± 0.15 b | 53.13 ± 0.45 b |
| 1000 | 81.20 ± 0.22 c | 65.04 ± 0.40 c |
Mean ± sd, n = 3
a-fValues in the same rows for each concentrations are followed by different letters are significantly different (p < 0.05)