Optimization of Polygalacturonase Production from a Newly Isolated Thalassospira frigidphilosprofundus to Use in Pectin Hydrolysis: Statistical Approach

Table 5

Ranges and levels of the factors for CCD matrix.

Factors w/%	Symbol	Coded level
		−2	−1	0	1	2
Orange peel	𝜒1	0.50	0.75	1.00	1.25	1.50
Bactopeptone	𝜒2	0.10	0.15	0.20	0.25	0.30
MgCl2	𝜒3	0.65	0.70	0.75	0.80	0.90
NaCl	𝜒6	0.60	0.70	0.80	1.00	1.10