Fig. 2

168-h glucose, xylose, and glucose plus xylose yields from enzymatic hydrolysis of each section of pretreated aspen wood chips, as well as milled pretreated aspen. Shown are results from chips and milled wood pretreated at 180 °C for 4 (a), 8 (b), 12 (c), and 18 min (d). Yields reflect the amount of each sugar released in enzymatic hydrolysis as a percent of the maximum available of that type of sugar left in the pretreated biomass, as measured by compositional analysis. Error bars the standard deviation of triplicate runs