Enhanced Production of Xylitol from Corncob by Pachysolen tannophilus Using Response Surface Methodology

Table 7

Analyses of variance (ANOVA) for response surface quadratic model for the production of xylitol using CCD.

Source	Sum of square	df	Mean square value	𝐹 value	𝑃 value
Model	0.63	20	0.031	15.58	<0.0001
𝐴 temperature (°C)	0.026	1	0.026	13.07	<0.0001
𝐵-substrate concentration (g/L)	0.079	1	0.079	38.99	<0.0001
𝐶-pH	0.10	1	0.10	51.74	<0.0001
𝐷-agitation speed (rpm)	0.038	1	0.038	18.76	0.0002
𝐸-inoculum size (mL)	0.061	1	0.061	30.26	<0.0001
𝐴𝐵	0.027	1	0.027	13.42	0.0010
𝐴𝐶	5.281𝐸−004	1	5.281𝐸−004	0.26	0.6125
𝐴𝐷	0.011	1	0.011	5.40	0.0273
𝐴𝐸	1.531𝐸−004	1	1.531𝐸−004	0.076	0.7847
𝐵𝐶	3.003𝐸−003	1	3.003𝐸−003	1.49	0.2319
𝐵𝐷	6.328𝐸−003	1	6.328𝐸−003	3.14	0.0868
𝐵𝐸	9.031𝐸−004	1	9.031𝐸−004	0.45	0.5084
𝐶𝐷	7.812𝐸−005	1	7.812𝐸−005	0.039	0.8452
𝐶𝐸	9.031𝐸−004	1	9.031𝐸−004	0.45	0.5084
𝐷𝐸	3.125𝐸−006	1	3.125𝐸−006	1.552𝐸−003	0.9688
𝐴^2	0.088	1	0.088	43.81	<0.0001
𝐵^2	0.092	1	0.092	45.78	<0.0001
𝐶^2	0.12	1	0.12	58.49	<0.0001
𝐷^2	0.039	1	0.039	19.48	<0.0001
𝐸^2	0.063	1	0.063	31.25	<0.0001
Residual	0.058	29	2.014𝐸−003
Lack of fit	0.053	22	2.400𝐸−003	3	0.0699
Pure error	5.600𝐸−003	7	8.000𝐸−004
Cor total	0.69	49