Degradation of nonphenolic lignin by the laccase/1-hydroxybenzotriazole system.

Abstract

Phenolic and nonphenolic (permethylated) synthetic [14C]lignins were depolymerized by Trametes villosa laccase in the presence of a radical mediator, 1-hydroxybenzotriazole (HOBT). Gel permeation chromatography of the treated lignins showed that approximately 10% of their substructures were cleaved. The system also cleaved a beta-O-4-linked model compound, 1-(4-ethoxy-3-methoxy-ring-[14C]phenyl)-2-(2-methoxyphenoxy)-propane- 1,3-diol, and a beta-1-linked model, 1, 2-bis-(3-methoxy-4-[14C]methoxyphenyl)-propane-1,3-diol, that represent nonphenolic substructures in lignin. High performance liquid chromatography of products from the oxidized models showed that they were produced in sufficient yields to account for the ability of laccase/HOBT to depolymerize nonphenolic lignin.

4 Figures and Tables

02040'02'04'06'08'10'12'14'16
Citations per Year

88 Citations

Semantic Scholar estimates that this publication has 88 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Srebotnik2000DegradationON, title={Degradation of nonphenolic lignin by the laccase/1-hydroxybenzotriazole system.}, author={Ewald Srebotnik and Kenneth E Hammel}, journal={Journal of biotechnology}, year={2000}, volume={81 2-3}, pages={179-88} }