Table 1.
Response surface analysis program and results for sumac extract.
| Run | Factor1 A: Ethanol Concentration (%) |
Factor2 B: Extraction Time (min) |
Factor3 C: Liquid-Solid Ratio |
DPPH· Scavenging Rate Y: (%) |
|---|---|---|---|---|
| 1 | 20 | 35 | 10:1 | 82.03 |
| 2 | 40 | 20 | 10:1 | 91.77 |
| 3 | 60 | 35 | 10:1 | 79.62 |
| 4 | 40 | 5 | 15:1 | 90.43 |
| 5 | 20 | 5 | 10:1 | 81.28 |
| 6 | 60 | 5 | 10:1 | 86.37 |
| 7 | 40 | 35 | 15:1 | 88.38 |
| 8 | 40 | 20 | 10:1 | 92.08 |
| 9 | 20 | 20 | 15:1 | 85.97 |
| 10 | 20 | 20 | 5:1 | 77.10 |
| 11 | 40 | 20 | 10:1 | 92.60 |
| 12 | 40 | 35 | 5:1 | 82.95 |
| 13 | 40 | 20 | 10:1 | 91.47 |
| 14 | 40 | 20 | 10:1 | 90.95 |
| 15 | 60 | 20 | 5:1 | 85.17 |
| 16 | 60 | 20 | 15:1 | 85.25 |
| 17 | 40 | 5 | 5:1 | 84.15 |