Figure 4From: Unraveling the structural characteristics of lignin in hydrothermal pretreated fibers and manufactured binderless boards from Eucalyptus grandisMain substructures present. A, β-aryl ether structure formed by β-O-4′ linkages; B, resinol including β-β’ linkages; C, phenylcoumaran including β-5′ linkages; F, p-hydroxycinnamyl alcohol end groups; G, Guaiacyl unit; S, Syringyl unit; S’, Oxidized syringyl units bearing a carboxyl group at Cα.Back to article page