A Statistical Approach for Optimization of Simultaneous Production of β-Glucosidase and Endoglucanase by Rhizopus oryzae from Solid-State Fermentation of Water Hyacinth Using Central Composite Design

Table 3

Analysis of variance for β-glucosidase production.

Source	Sum of squares	df	Mean square	F value	P value	Prob > F
Model	31558.5	9	3506.5	43.3151	<.0001	significant
A: sub. conc	5940.86	1	5940.86	73.3863	<.0001
B-pH	7658.88	1	7658.88	94.6087	<.0001
C: temp	2949.85	1	2949.85	36.4389	.0001
AB	312.5	1	312.5	3.86025	.0778
AC	34.7778	1	34.7778	0.4296	.527
BC	34.8613	1	34.8613	0.43063	.5265
A^2	465.899	1	465.899	5.75517	.0374
B^2	9980.03	1	9980.03	123.282	<.0001
C^2	6009.27	1	6009.27	74.2314	<.0001

R²−0.975, Adj R²0.9525, Pred R²−0.8083, C.V. %  −11.13.