Fig. 3From: Pretreatment of sweet sorghum straw and its enzymatic digestion: insight into the structural changes and visualization of hydrolysis processSEM images (×1000 magnification) of sweet sorghum straw. a Untreated. b–d NaOH, H2SO4 and H2O2 pretreated, respectively. e Untreated and enzyme hydrolyzed. f–h NaOH, H2SO4 and H2O2 pretreated and enzyme hydrolyzed, respectively. Scale bars: 100 µmBack to article page