Table 4.
Results of antioxidant activities.
| Regression Equation | R2 | IC50 (mg/mL) | |
|---|---|---|---|
| DPPH free radical scavenging activity | y = −0.1862x2 + 9.2691x + 2.6819 | 0.9999 | 5.77 |
| Hydroxyl free radical scavenging activity | y = −0.00005x2 + 0.09694x + 17.56407 | 0.9951 | 0.43 |
| Superoxide anion free radical scavenging activity | y = −0.167x2 + 7.8646x + 2.0721 | 0.9991 | 7.19 |
| Iron ion chelation | y = −0.0627x2 + 6.9982x + 0.4071 | 0.9986 | 7.60 |
| Copper ion chelation | y = −0.0476x2 + 5.0688x − 1.0542 | 0.9999 | 11.26 |
| Anti-lipid peroxidation activity | y = −0.1025x2 + 7.2155x + 0.2006 | 0.9986 | 7.76 |
| Iron reduction capacity | y = 0.0387x + 0.0097 | 0.9997 | 12.67 |
| Molybdenum reduction capacity | y = 0.0991x + 0.0592 | 0.9994 | 4.45 |