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

Table 4

Analyses of variance (ANOVA) for response surface quadratic model for the production of xylitol using Box-Behnker design.

Source	Sum of square	df	Mean square value	𝐹 value	𝑃 value
Model	0.40	14	0.028	26.29	<0.0001
𝐴-peptone	0.034	1	0.034	31.67	<0.0001
𝐵-xylose	3.675𝐸−003	1	3.675𝐸−003	3.41	0.0861
𝐶-MgSO4 ⋅ 7H2O	0.039	1	0.039	35.75	<0.0001
𝐷-yeast extract	0.035	1	0.035	32.67	<0.0001
𝐴𝐵	0.034	1	0.034	31.76	<0.0001
𝐴𝐶	2.500𝐸−005	1	2.500𝐸−005	0.023	0.8811
𝐴𝐷	4.000𝐸−004	1	4.000𝐸−004	0.37	0.5521
𝐵𝐶	3.025𝐸−003	1	3.025𝐸−003	2.81	0.1160
𝐵𝐷	0.024	1	0.024	22.29	0.0003
𝐶𝐷	6.400𝐸−003	1	6.400𝐸−003	5.94	0.0288
𝐴^2	0.045	1	0.045	41.63	<0.0001
𝐵^2	0.16	1	0.16	148.20	<0.0001
𝐶^2	0.037	1	0.037	34.46	<0.0001
𝐷^2	0.074	1	0.074	68.80	<0.0001
Residual	0.015	14	1.078𝐸−003
Lack of fit	0.015	10	1.501𝐸−003	75.04	0.0004
Pure error	8.000𝐸−005	4	2.000𝐸−005
Cor total	0.41	28