Fig. 2From: Synergistic contribution of hydrosulfide and carbonate anions to the β-O-4 bond cleavage of lignin model compounds in a green liquor pretreatment for enzymatic hydrolysis of lignocellulosic materialsChemical structure of the lignin model compounds employed as starting materials (I and II) and the identified degradation products (III, IV, VI, and VII)Back to article page