Optimization of Fermentation Medium for the Production of Atrazine Degrading Strain Acinetobacter sp. DNS32 by Statistical Analysis System

Table 5

ANOVA for the second-order polynomial model.

Source	Degree of freedom	Sum of squares	Mean square	𝐹-value	𝑃>𝐹
Linear	3	0.0106	—	4.420	0.0318
Quadratic	3	0.167	—	69.430	<0.0001
Cross product	3	0.00706	—	2.940	0.0854
Total model	9	0.184	0.0205	25.598	<0.0001
Total error	10	0.008	0.0008	—	—

𝑅²=95.8%; Adj. 𝑅²=92.1%; CV=0.324.