A Statistical Approach for Optimization of Simultaneous Production of β-Glucosidase and Endoglucanase by Rhizopus oryzae from Solid-State Fermentation of Water Hyacinth Using Central Composite Design

Table 1

Process variables and their levels.

Independent variables	Symbol	Code levels
		−a	−1	0	+1	+a
Substrate conc. (%,w/w)	A	0.24	0.5	0.87	1.25	1.50
pH	B	4.97	6	7.5	9	10.02
Temperature	C	10.50	18	29	40	47.49