Enhancement of Antibacterial Activity of Paludifilum halophilum and Identification of N-(1-Carboxy-ethyl)-phthalamic Acid as the Main Bioactive Compound

Table 2

Independent variables and their levels for Box–Behnken design.

Factor	Independent variables	Coded levels
		−1	0	+1
X 1	Temperature (°C)	36	40	44
X 2	pH	7.8	8.3	8.8
X 3	% MgSO4·7H2O (w/v)	0.8	1.2	1.6