Fig. 5From: Understanding the structural and chemical changes of plant biomass following steam explosion pretreatmentPhenolic monomers composition (mg/g lignin) of a Miscanthus × giganteus; b poplar and c wheat straw samples without pretreatment and pretreated with increasing severity: red 4-hydroxybenzoic acid; orange vanillyl-type monomers and green syringyl-type monomers. * Not detectableBack to article page