Fig. 5
From: Coupled enzymatic hydrolysis and ethanol fermentation: ionic liquid pretreatment for enhanced yields
Sugar yield (g sugars released/g available sugars) obtained from the hydrolysis of lignocellulose materials. Blue bars represent glucose and yellow bars represent total reducing sugars. a Reed canary grass; and b Pine bark. Enzymatic hydrolysis experiments were performed with either non-treated or H2SO4-treated (SF 4.1), or (S)IL-treated lignocelluloses. (S)IL treatments were performed at (A) SF 2.5 (B) SF 3.7 and (C) SF 4.1. AH is acid hydrolysate, i.e., liquid fraction obtained from the acid pre-hydrolysis and EH is enzymatic hydrolysate of acid-treated solids