Reducing Sugar Production from Teff Straw Biomass Using Dilute Sulfuric Acid Hydrolysis: Characterization and Optimization Using Response Surface Methodology

Table 1

Coded and actual value levels of the variables for Box–Behnken design.

Independent variables	Symbol	Coded and actual value levels
		−1	0	+1
Acid concentration (% v/v)	A	0.5	2.25	4
Hydrolysis temperature (^oC)	B	80	100	120
Hydrolysis time (min)	C	30	45	60
Liquid to solid ratio (ml/g)	D	10	20	30