Table 2.
Operational conditions assayed (expressed in terms of coded and uncoded independent variables) and experimental values obtained for response variables.
| Experiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Independent Variables | |||||||||||
| EtOH (%) or x1 | 0(−1) | 0(−1) | 0(−1) | 80(1) | 80(1) | 80(1) | 40(0) | 40(0) | 40(0) | 40(0) | 40(0) |
| Et (min) or x2 | 10(−1) | 35(0) | 60(1) | 10(−1) | 35(0) | 60(1) | 10(−1) | 60(1) | 35(0) | 35(0) | 35(0) |
| Dependent Variables | |||||||||||
| TPC or y1 (mg GAE/g dried AP) | 18.1 | 19.9 | 18.0 | 15.0 | 18.9 | 20.1 | 36.4 | 41.8 | 42.3 | 42.9 | 43.6 |
| TFC or y2 (mg RE/g dried AP) | 31.8 | 37.1 | 32.6 | 34.8 | 37.1 | 42.2 | 72.7 | 79.9 | 82.2 | 84.3 | 85.3 |
| DPPH or y3 (mg TE/g dried AP) | 11.1 | 13.0 | 11.9 | 24.8 | 26.2 | 31.0 | 64.2 | 74.9 | 73.4 | 75.3 | 76.1 |
| ABTS or y4 (mg TE/g dried AP) | 54.2 | 64.8 | 67.3 | 73.8 | 87.7 | 83.1 | 114.7 | 138.8 | 146.7 | 148.1 | 149.7 |
| FRAP or y5 (mg TE/g dried AP) | 18.7 | 23.5 | 22.4 | 19.3 | 19.6 | 24.4 | 34.2 | 41.8 | 40.2 | 42.8 | 39.7 |