Table 3: Analysis of variance and regression coefficients of
independent variables for fermentation condition: Response pH
Term Regression coefficient F-value P value
B0 4.00 29.72 0.011
A - 0.20 0.72 0.4184
B - 0.35 220.22 0.0001
C - 0.040 2.88 0.1241
Quadratic effects
A2 -0.045 1.01 0.3110
B2 + 0.2 20.57 0.0014
C2 + 0.055 1.47 0.2567
Interaction effect
AB - 0.037 2.02 0.1887
AC + 0.038 2.02 0.1887
BC - 0.012 0.22 0.6468
Lack of fit 0.05
A = Mass of root; B = Fermentation time; C= Fermentation temperature