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DFRC GC analysis of lignin in representative plant taxa. A simplified version of the plant phylogenetic tree is used to indicate the phylogenetic relationships between the plant species whose lignin monomer composition was evaluated by using DFRC lignin analysis. Authentic standards of hydroxycinnamyl alcohol diacetates were used to identify the monomer specific peaks. G/S, guaiacyl/syringyl lignin derivative; c/t: cis/trans; IS, internal standard.
