Figure 1.

Yield in main lignin-derived thioacidolysis monomers recovered from extract-free wood of 1-year-old transgenic and control poplars grown together in the greenhouse and individually analyzed. For each tree, the main stem was collected, debarked, ground, and solvent extracted. Data are means of duplicate experiments (se 3% to 5%) and expressed in micromoles of G, S, and 5-OH G monomers recovered per gram of lignin (evaluated as Klason lignin). This yield is a close reflection of the frequency of units involved only in labile β-O-4 bonds in the lignin.