Optimization of Inulinase Production from Garlic by Streptomyces sp. in Solid State Fermentation Using Statistical Designs

Table 3

Ranges of the independent variables used in RSM.

Variable		Levels (mg/g dry substrate)
	Code	−2	−1	0	+1	+2
NH4NO3	𝑋1	5.0	6.2	7.5	8.7	10.0
MnSO4·7H2O	𝑋2	10.0	20.0	30.0	40.0	50.0
Soya bean cake	𝑋3	40.0	50.0	60.0	70.0	80.0
K2HPO4	𝑋4	2.0	3.2	4.5	5.7	7.0