Effects of Extrusion Pretreatment Parameters on Sweet Sorghum Bagasse Enzymatic Hydrolysis and Its Subsequent Conversion into Bioethanol

Figure 1

Response surfaces for total sugars ((a1), (a2), and (a3)), C6 ((b1), (b2), and (b3)), and C5 ((c1), (c2), and (c3)) generated from sweet sorghum bagasse extruded at different temperatures (50, 75, or 100°C), screws speeds (100, 150, or 200 rpm), and moistures inside the barrel (30, 40, or 50%) hydrolyzed with fiber degrading enzymes expressed in sugars milligrams per gram of bagasse (dw).

(a)

(b)

(c)