Table 4: Analysis of variance and regression coefficients of
independent variables for fermentation condition: Response TTA
Term Regression coefficient F-value P value
B0 2.19 3.64 0.0338
A 0.039 0.18 0.6814
B 0.064 0.48 0.5046
C 0.29 9.89 0.0118
Quadratic effects
A2 0.22 1.14 0.2475
B2 0.45 1.14 0.0328
C2 - 0.051 2.08 0.7785
Interaction effect
AB - 0.11 1.53 0.3139
AC + 0.11 6.35 0.3139
BC - 0.15 0.084 0.1827
Lack of fit 0.05
A = Mass of root; B = Fermentation time; C= Fermentation temperature