Optimization of Sulfide/Sulfite Pretreatment of Lignocellulosic Biomass for Lactic Acid Production

Table 1

Values of independent variables with coded levels during pretreatment steps.

Factor	Name	Units	Type	Minimum	Maximum	Coded
𝐴	Catalyst conc.	%	Numeric	1.00	3.00	−1.000=1.00	1.000=3.00
𝐵	Time	h	Numeric	1.00	3.00	−1.000=1.00	1.000=3.00
𝐶	Temp.	°C	Numeric	90.00	130.00	−1.000=90.00	1.000=130.00