TABLE 4.

Analysis of variance for response surface quadratic model results.

Source	Sum of squares	df	Mean square	F-value	P-value	Significant
Model	2.545E + 07	14	1.818E + 06	59.02	< 0.0001	**
A-Glycerol	3.453E + 06	1	3.454E + 06	112.15	< 0.0001	**
B-Okara	1.631E + 06	1	1.631E + 06	52.95	< 0.0001	**
C-MgSO4⋅7H2O	2.438E + 05	1	2.438E + 05	7.92	0.0138	*
D-CaCl2	65599.57	1	65599.57	2.13	0.1665	–
AB	29131.66	1	29131.66	0.9459	0.3473	–
AC	304.15	1	304.15	0.0099	0.9222	–
AD	1.751E + 05	1	1.751E + 05	5.69	0.0318	*
BC	128.71	1	128.71	0.042	0.9494	–
BD	1982.48	1	1982.48	0.0644	0.8034	–
CD	7490.04	1	7490.04	0.2432	0.6295	–
A2	1.960E + 07	1	1.960E + 07	636.42	< 0.0001	**
B2	2.729E + 05	1	2.729E + 05	8.86	0.0100	*
C2	4.310E + 05	1	4.310E + 05	13.99	0.0022	*
D2	1.948E + 05	1	1.948E + 05	6.33	0.0247	*
Residual	4.312E + 05	14	30797.76	–	–	–
Lack of Fit	3.588E + 05	10	35879.63	1.98	0.2661	Not significant
Pure Error	72372.30	4	18093.07	–	–	–
Cor Total	2.588E + 07	28		–	–	–

*Indicates a significant difference (p < 0.05);

**Indicates an extremely significant difference (p < 0.0001).