Fig. 3From: THF co-solvent pretreatment prevents lignin redeposition from interfering with enzymes yielding prolonged cellulase activityInitial and final free protein content (on the left axis) in enzymatic hydrolysis solutions measured before (at 0Â h) and after complete glucan hydrolysis for DSA-pretreated switchgrass at 10Â g/L glucan loading and CELF-pretreated switchgrass at 40Â g/L glucan loading. Initial protein added in both cases was 1.72Â g/L. Residual dry solids after complete glucan hydrolysis for DSA-pretreated switchgrass and CELF-pretreated switchgrass are shown on the right y-axisBack to article page