SEARCH Articles Figures Tables Distribution of Guaiacyl and Syringyl Lignins Guaiacyl glyceryl ether Guaiacyl group Guaiacyl groups, oxidation Guaiacyl lignin Guaiacyl structures Guaiacyl unit Guaiacyl-syringyl lignins Guaiacyl-type Lignin guaiacyl units Lignin structure guaiacyl Polyacylhydrazones having guaiacyl units Polyacylhydrazones having guaiacyl units with alkylene groups Quantitative Determination of Noncondensed and Condensed Guaiacyl Nuclei in Softwood Protolignins Syringyl/guaiacyl ratio