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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

From: Syneresis investigations of lacto-fermented sodium caseinate in a mixed model system

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