Fig. 1
From: Comparison of methodologies used to determine aromatic lignin unit ratios in lignocellulosic biomass
Aromatic region of through-space two-dimensional 13C–13C correlation data on a 13C-enriched poplar woody stems and b 13C-enriched Monterey pine. 13C chemical shifts and approximate linewidths were extracted from the data and listed in grey and red text next to aromatic lignin unit chemical structures shown in c