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. 2020 Apr 25;6(4):e03852. doi: 10.1016/j.heliyon.2020.e03852

Table 6.

CCD-1 quadratic model individual factor significance, duplicates and combined (Response variable: specific activity at 72 h de culture).

Spec. Act. (UL−1) 72 h
Source Sum of
df Mean
F
p-value
Squares Square Value Prob > F
Quadratic Model 1.84E+05 14 1.31E+04 2.94 0.0345
A-Glucose 1.35E+04 1 1.35E+04 3.02 0.1078∗∗∗
B- isolated soy protein 2.54E+04 1 2.54E+04 5.68 0.0346
C-Malt extract 6.59E+02 1 6.59E+02 0.15 0.7076
D-(NH4)2SO4 1.30E+04 1 1.30E+04 2.91 0.1140∗∗∗
AB 1.75E+04 1 1.75E+04 3.91 0.0715∗∗
AC 1.07E+04 1 1.07E+04 2.40 0.1473
AD 3.71E+03 1 3.71E+03 0.83 0.3800
BC 2.81E+02 1 2.81E+02 0.06 0.8063
BD 9.04E+02 1 9.04E+02 0.20 0.6608
CD 1.19E+02 1 1.19E+02 0.03 0.8729
A2 8.49E+04 1 8.49E+04 19.00 0.0009
B2 1.16E+02 1 1.16E+02 0.03 0.8746
C2 9.22E+01 1 9.22E+01 0.02 0.8882
D2 3.10E+03 1 3.10E+03 0.69 0.4209
Residual 5.36E+04 12 4.47E+03
Lack of Fit 4.59E+04 10 4.59E+03 1.18 0.5418
Pure Error 7.75E+03 2 3.87E+03
Cor Total 2.37E+05 26
R-Squared 0.7740
Adj R-Squared 0.5104
Adeq Precision 7.2192

96–99 % significance.

∗∗

93–95 % significance.

∗∗∗

89–90 % significance.