Fig. 5From: Steam explosion pretreatment of softwood: the effect of the explosive decompression on enzymatic digestibilitySEM images of pretreated spruce wood chips. a After steam pretreatment without explosion. b After steam pretreatment with explosion. Cavities on the biomass surface are highlighted exemplarily. c After steam pretreatment without explosion and enzymatically hydrolyzed. Pretreatment conditions: log R 0 = 5.0 (T = 235 °C, t = 10 min); hydrolysis conditions: 1 %w/w cellulose, 60 FPU g−1 celluloseBack to article page