title: Exhaustive laccase-catalysed oxidation of a lignin model compound (vanillyl glycol) produces methanol and polymeric quinoid products.
abstract: Laccase-catalysed oxidation of the lignin-related phenol vanillyl glycol results in the initial formation of dimers and subsequent polymerization. The polymerization is accompanied by a liberation of methanol corresponding to 15-20% demethylation. Visible spectra together with reduction experiments suggest the simultaneous formation of o-quinones. The participation of quinone formation in the polymerization process and the possible role of such intermediates in lignin biodegradation is discussed.
mesh_terms: D042845:Laccase; D000432:Methanol / Q000378:metabolism; D010084:Oxidation-Reduction; D010088:Oxidoreductases / Q000378:metabolism*; D011108:Polymers; D011409:Propylene Glycols / Q000378:metabolism*; D011809:Quinones / Q000378:metabolism; D013053:Spectrophotometry
chemical_list: D011108:Polymers; D011409:Propylene Glycols; D011809:Quinones; C046183:4-hydroxy-3-methoxyphenyl-1-propane-1,2-diol; D010088:Oxidoreductases; D042845:Laccase; D000432:Methanol