Plackett–Burman Combined with Box–Behnken to Optimize the Medium of Fermented Tremella Polysaccharide and Compare the Characteristics before and after Optimization

Table 8

ANOVA for the response surface polynomial model of all independent variables.

Factor	FTP yield (Y)			Glucose utilization ratio (U)
	SS	F value	Prob > F	SS	F value	Prob > F
Model	3.55	18.42	0.0004	147.8	10.49	0.0027
A- potato ex.	0.75	35.22	0.0006	10.51	6.72	0.0359
B- glucose	0.86	40.21	0.0004	33.59	21.47	0.0024
C- peptone	0.29	13.57	0.0078	0.17	0.11	0.7537
AB	0.22	10.43	0.0145	0.17	0.11	0.7492
AC	0.036	1.67	0.2377	22.3	14.25	0.0069
BC	8.04 × 10^−4	0.038	0.8519	5.72	3.65	0.0976
A^2	0.86	40.33	0.0004	0.93	0.59	0.4666
B^2	0.18	8.52	0.0224	62.83	40.15	0.0004
C^2	0.22	10.12	0.0155	9.6	6.13	0.0424
Residual	0.15			10.95
Lack of fit	0.11	4.11	0.1027	6.68	2.08	0.2452
Pure error	3.70 × 10^−2			4.28