Effect of C/N Ratio and Media Optimization through Response Surface Methodology on Simultaneous Productions of Intra- and Extracellular Inulinase and Invertase from Aspergillus niger ATCC 20611

Table 4

Analysis of variance (ANOVA).

Responses	Model	Lack of fit
Extracellular inulinase (U/mL)
P value	0.0002	0.1120
F value	10.21	3.70
𝑅^2	0.93	—
Extracellular invertase (U/mL)
P value	<0.0001	0.1536
F value	19.22	2.99
𝑅^2	0.96	—
Biomass (mg/mL)
P value	<0.0001	0.0601
F value	17.54	5.46
𝑅^2	0.96	—
C/N%
P value	<0.0001	0.1704
F value	18.84	2.77
𝑅^2	0.96	—