Table 5.

ANOVA for the entire quadratic model of response (2) concentration of biomass.

Source	Sum of squares	Mean square	F -value	p -value
Model	0.0382	0.0042	27.80	0.0001	Significant
A-potato wastes concentration	0.0071	0.0071	46.33	0.0003
B-fermentation period	0.0064	0.0064	41.78	0.0003
C-peptone concentration	0.0001	0.0001	0.8376	0.3905
AB	0.0032	0.0032	20.89	0.0026
AC	0.0016	0.0016	10.21	0.0152
BC	0.0005	0.0005	3.31	0.1115
A2	0.0187	0.0187	122.49	<0.0001
B2	0.0009	0.0009	6.06	0.0434
C2	0.0003	0.0003	1.91	0.2095
Residual	0.0011	0.0002
Lack of fit	0.0007	0.0002	2.97	0.1600	Not significant
Pure error	0.0003	0.0001
Cor. total	0.0393