Fig. 7

Influence of pretreatment severity and enzyme dosage on glucose yield in enzymatic hydrolysis, expressed as % of pretreated biomass content. Shown are results for spruce wood chips pretreated with and without explosion. Pretreatment conditions: T = 235 °C, t = 2.5–20 min, Δp explosion = 30 bar; hydrolysis conditions: 1 %w/w cellulose, 15/30/60 FPU g⁻¹ cellulose