Fig. 3From: 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 materialsChange in the yields of compounds I: filled circle, III: open circle, and IV: double circle, and the total yields of these 3 compounds: multi symbol on the basis of the initial amount of compound I, when compound I was treated in solutions 1, 2, and 3 at 120 °C: 3 figures in the upper line, 130 °C: 3 figures in the middle line, and 140 °C: 3 figures in the lower line Back to article page