Table 1.
Central composite design arrangement and responses
| Factors | Responses | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Exp.No. | PME,% | PMME,% | BE,% | BME,% | Lightness | PV, cP | WSI,% | WAI, g/g | OAA |
| 1 | 20.00 | 6.00 | 20.00 | 6.00 | 80.45 | 146.50 | 41.08 | 2.72 | 7.80 |
| 2 | 25.00 | 6.00 | 20.00 | 6.00 | 80.4 | 152.00 | 40.35 | 2.75 | 7.95 |
| 3 | 20.00 | 9.00 | 20.00 | 6.00 | 79.79 | 128.00 | 41.25 | 2.66 | 7.90 |
| 4 | 25.00 | 9.00 | 20.00 | 6.00 | 79.29 | 135.50 | 41.23 | 2.63 | 7.90 |
| 5 | 20.00 | 6.00 | 25.00 | 6.00 | 80.6 | 148.20 | 40.69 | 2.78 | 8.00 |
| 6 | 25.00 | 6.00 | 25.00 | 6.00 | 80.39 | 150.50 | 41.50 | 2.86 | 8.10 |
| 7 | 20.00 | 9.00 | 25.00 | 6.00 | 79.87 | 134.00 | 42.12 | 2.56 | 7.75 |
| 8 | 25.00 | 9.00 | 25.00 | 6.00 | 79.35 | 145.00 | 42.68 | 2.69 | 7.90 |
| 9 | 20.00 | 6.00 | 20.00 | 9.00 | 79.87 | 133.50 | 43.66 | 2.53 | 7.95 |
| 10 | 25.00 | 6.00 | 20.00 | 9.00 | 79.68 | 140.00 | 44.06 | 2.56 | 7.80 |
| 11 | 20.00 | 9.00 | 20.00 | 9.00 | 76.8a | 117.00a | 46.01 | 2.36 | 6.65 |
| 12 | 25.00 | 9.00 | 20.00 | 9.00 | 77.67 | 121.50 | 43.95 | 2.43 | 6.95 |
| 13 | 20.00 | 6.00 | 25.00 | 9.00 | 79.13 | 145.50 | 43.91 | 2.54 | 7.45 |
| 14 | 25.00 | 6.00 | 25.00 | 9.00 | 79.95 | 141.00 | 42.11 | 2.53 | 7.80 |
| 15 | 20.00 | 9.00 | 25.00 | 9.00 | 77.8 | 127.50 | 44.19 | 2.44 | 6.85 |
| 16 | 25.00 | 9.00 | 25.00 | 9.00 | 77.69 | 129.00 | 43.30 | 2.51 | 7.95 |
| 17 | 17.50 | 7.50 | 22.50 | 7.50 | 79.88 | 126.00 | 40.04 | 2.61 | 7.60 |
| 18 | 27.50 | 7.50 | 22.50 | 7.50 | 79.53 | 153.00 | 41.14 | 2.68 | 7.70 |
| 19 | 22.50 | 4.50 | 22.50 | 7.50 | 82.17b | 165.00b | 39.65a | 2.91b | 7.90 |
| 20 | 22.50 | 10.50 | 22.50 | 7.50 | 77.12 | 130.50 | 47.25b | 2.31 | 6.60a |
| 21 | 22.50 | 7.50 | 17.50 | 7.50 | 79.13 | 128.50 | 41.10 | 2.60 | 7.80 |
| 22 | 22.50 | 7.50 | 27.50 | 7.50 | 80.6 | 144.00 | 41.10 | 2.69 | 7.90 |
| 23 | 22.50 | 7.50 | 22.50 | 4.50 | 81.39 | 153.50 | 39.80 | 2.89 | 8.00 |
| 24 | 22.50 | 7.50 | 22.50 | 10.50 | 79.13 | 129.00 | 46.99 | 2.30a | 6.70 |
| 25 | 22.50 | 7.50 | 22.50 | 7.50 | 80.21 | 136.50 | 41.23 | 2.54 | 8.00 |
| 26 | 22.50 | 7.50 | 22.50 | 7.50 | 81.04 | 137.50 | 41.91 | 2.53 | 8.05 |
| 27 | 22.50 | 7.50 | 22.50 | 7.50 | 81.17 | 136.00 | 42.03 | 2.54 | 8.19 |
| 28 | 22.50 | 7.50 | 22.50 | 7.50 | 80.61 | 133.50 | 41.41 | 2.56 | 8.20b |
| 29 | 22.50 | 7.50 | 22.50 | 7.50 | 80.79 | 133.50 | 41.68 | 2.52 | 8.10 |
| 30 | 22.50 | 7.50 | 22.50 | 7.50 | 80.41 | 134.50 | 41.19 | 2.60 | 7.95 |
| 31 | 22.50 | 7.50 | 22.50 | 7.50 | 80.35 | 136.50 | 41.38 | 2.58 | 8.15 |
| 32 | 22.50 | 7.50 | 22.50 | 7.50 | 81 | 137.00 | 42.82 | 2.58 | 7.90 |
aMinimum, bMaximum, PME Pearl millet extrudates, PMME Pearl millet malt extrudates, BE barley extrudates, BME Barley malt extrudates, PV Peak viscosity, WSI Water solubility index, WAI Water absorption index, OAA Overall acceptability