Optimization of Process Parameters for ε-Polylysine Production by Response Surface Methods

Table 2

Factors and levels in orthogonal array test for HZD-3B and D155 resins.

Level		HZD-3B			D155
		1	2	3	1	2	3
Factor	: HCl concentration (mol/L)	0.3	0.4	0.5	0.2	0.3	0.4
	: desorption time (h)	8	9	10	8	9	10
	: desorption temperature (°C)	20	25	30	20	25	30