Abstract
The hydrolysis of hydrothermally treated sugarcane bagasse at dry matter (DM) content of 5%, 15%, and 20% using a laboratory-made blend of Trichoderma reesei Rut C-30 and Aspergillus awamori (TrAa) supernatants was compared with that of commercial enzymes: Celluclast-Novozym 188 (Cel188), Cellic CTec2 (CT2), and CT2 blended with HTec2 (CTH2). Although the glucose yields (80–86%) achieved with all the enzymes were similar at 5% DM, CTH2 and CT2 performed better than Cel188 and TrAa at 20% DM, with yields of 72%, 69%, 45%, and 57%, respectively. Noticeably, TrAa promoted faster liquefaction in the early stages of hydrolysis. The superior CT2′s performance at high DM contents might be associated with its improved resistance to end-product inhibition, as this preparation was the least affected in experiments containing initial exogenous glucose. However, the performance of all the enzymes decreased in the presence of exogenous glucose in comparison to experiments without exogenous glucose.
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