Table 2.
The main experimental design for the selected factors. The completed plan is a “Complete Factorial Plan” with 4 Factors in 2 levels and 16 trials plus 3 points in the center. This plan made it possible to calculate the following and perform a Curvature test: The 4 Main Effects, the 6 Interactions of order 2, the 5 Interactions of order 3, the only Interaction of order 4
| Sample | Space type | Sodium caseinate %(A) |
Starch %(B) |
Lactose %(C) |
Ferment lg/l(D) | Dry matter % |
|---|---|---|---|---|---|---|
| 1 | Factorial | 3 | 0 | 4 | 0.2 | 7 |
| 2 | Factorial | 3 | 0 | 4 | 0.5 | 7 |
| 3 | Factorial | 3 | 0 | 9 | 0.2 | 12 |
| 4 | Factorial | 3 | 0 | 9 | 0.5 | 12 |
| 5 | Factorial | 3 | 2 | 4 | 0.2 | 9 |
| 6 | Factorial | 3 | 2 | 4 | 0.5 | 9 |
| 7 | Factorial | 3 | 2 | 9 | 0.2 | 14 |
| 8 | Factorial | 3 | 2 | 9 | 0.5 | 14 |
| 9 | Factorial | 8 | 0 | 4 | 0.2 | 12 |
| 10 | Factorial | 8 | 0 | 4 | 0.5 | 12 |
| 11 | Factorial | 8 | 0 | 9 | 0.2 | 17 |
| 12 | Factorial | 8 | 0 | 9 | 0.5 | 17 |
| 13 | Factorial | 8 | 2 | 4 | 0.2 | 14 |
| 14 | Factorial | 8 | 2 | 4 | 0.5 | 14 |
| 15 | Factorial | 8 | 2 | 9 | 0.2 | 19 |
| 16 | Factorial | 8 | 2 | 9 | 0.5 | 19 |
| 17 | Center | 5.5 | 1 | 6.5 | 0.35 | 13 |
| 18 | Center | 5.5 | 1 | 6.5 | 0.35 | 13 |
| 19 | Center | 5.5 | 1 | 6.5 | 0.35 | 13 |