Modification of Medium Composition for Enhancing the Production of Antifungal Activity from Xenorhabdus stockiae PB09 by Using Response Surface Methodology

Table 4

Experimental ranges and levels of the independent variables.

Variable	Parameter	Ranges and levels
		−1.68	−1	0	1	1.68
X1	Sucrose (g/L)	2.60	2.80	3.10	3.40	3.60
X2	Yeast extract (g/L)	20.45	21.40	22.80	24.20	25.15
X3	Mineral (g/L)	7.60	7.80	8.10	8.40	8.60