Fig. 5. Formation of low molecular weight ketone/aldehyde products via 2,4-dinitrophenylhydrazine assay (A) and phenolic products via Folin–Ciocalteu assay (B) from conversion of poplar alkaline organosolv lignin by Agrobacterium DyP/1 mM hydrogen peroxide (in orange) vs. Agrobacterium DyP/R. jostii glycolate oxidase/1 mM glycolic acid (in grey). Assay data for conversion of other polymeric lignins are shown in ESI.†.