Figure 6
Prussian blue staining of native, non-pre-treated corn stover with and without Fe2+ incubation. (A) Prussian blue staining of corn stover (CS) that went through incubation with 0.5 wt% H2SO4 but no Fe2+ (negative control). (B) Prussian blue staining of corn stover that went through incubation with 0.5 wt% H2SO4 and Fe2+. Both incubations were conducted at room temperature. PC = parenchymal cells; VBC = vascular bundle cells.