Modeling the Combined Effects of Temperature, pH, and Sodium Chloride and Sodium Lactate Concentrations on the Growth Rate of Lactobacillus plantarum ATCC 8014

Table 4

Regression coefficient results from the results of the central composite rotatable design (CCRD).

Model term	Regression coefficient	Standard error		value
Mean/interaction	0.018	0.001	15.889	<0.0001
1 T (L)	0.015	0.001	12.837	<0.0001
2 pH (L)	0.002	0.001	1.929	0.0688
3 NaCl (L)	−0.006	0.001	−5.227	<0.0001
4 Na-lactate (L)	−0.004	0.001	−3.357	0.0033
1 L by 3 L	−0.005	0.001	−3.649	0.0017
1 L by 4 L	−0.004	0.001	−2.611	0.0172

(L): linear factor. Statistics calculated with a degree of freedom = 19.