Optimized Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) Production by Moderately Haloalkaliphilic Bacterium Halomonas alkalicola Ext

Table 8

Analysis of variance (ANOVA) for the quadratic model of interactive effects of galactose concentration (A) and NaCl concentration (B) on PHA concentration (g/L).

Source of variation	Sum of squares	Degrees of freedom	Mean square	value	value
Model	3.48	4	0.8699	668.78	<0.0001 S
A-Galactose concentration	0.4842	1	0.4842	372.27	<0.0001 S
B-NaCl concentration	0.4857	1	0.4857	373.41	<0.0001 S
A^2	0.6634	1	0.6634	510.01	<0.0001 S
B^2	2.11	1	2.11	1624.01	<0.0001 S
Residual	0.0104	8	0.0013
Lack of fit	0.0088	4	0.0022	5.50	0.0637 NS
Pure error	0.0016	4	0.0004
Cor total	3.49	12

, , , , . S: significant; NS: not significant.