Fig. 6From: Comparative study of acid- and alkali-catalyzed 1,4-butanediol pretreatment for co-production of fermentable sugars and value-added lignin compoundsMass balance of biorefinery based on acid-catalyzed BDO organosolv pretreatment to coproduce fermentable sugars and antioxidant lignin (a),  fermentation at different initial glucose concentrations (b), concentrations of enzymatic hydrolysis products (c)Back to article page