Successive Nonstatistical and Statistical Approaches for the Improved Antibiotic Activity of Rare Actinomycete Nonomuraea sp. JAJ18

Table 3

Low, intermediate, and high levels of three independent variables used in RSM.

Variables		Range and level (g/L)
		+	0	−
	Starch	20	11	2
	NaCl	10	5.5	1
	MgSO4·7H2O	2	0.55	0.2