Table 4.

Values of coefficients, and statistical analysis of multienzyme activity, based on central composite design experiments.

	FPase		Endoglucanase		Xylanase
	Coefficient	P value	Coefficient	P value	Coefficient	P value
Mean	0.13**	0.025	33.56*	0.000	39.39*	0.000
Inlet air humidity X 1 (L)	0.01	0.401	−1.35*	0.022	−1.15	0.155
Inlet air humidity X 1 (Q)	0.00	0.804	−0.39	0.245	−0.79	0.325
Substrate initial moisture X 2 (L)	0.01	0.375	2.14*	0.009	0.53	0.410
Substrate initial moisture X 2 (Q)	0.05**	0.092	0.37	0.268	4.57*	0.017
X 1 (L) ×  X 2 (L)	0.01	0.708	0.54	0.198	0.66	0.460
R	0.61511		0.77479		0.46473
F value	1.60		13.76		0.87
F cal/F listed	0.46		3.09		0.17

*Significant at 0.05 level; **Significant at 0.1 level; R: coefficient of determination.