NEW MECHANISM OF THE C-ALPHA-C-BETA CLEAVAGE IN NONPHENOLIC ARYLGLYCEROL BETA-ARYL ETHER LIGNIN SUBSTRUCTURES CATALYZED BY LIGNIN PEROXIDASE

Authors
LUNDELL T SCHOEMAKER H HATAKKA A BRUNOW G
Citation
T. Lundell et al., NEW MECHANISM OF THE C-ALPHA-C-BETA CLEAVAGE IN NONPHENOLIC ARYLGLYCEROL BETA-ARYL ETHER LIGNIN SUBSTRUCTURES CATALYZED BY LIGNIN PEROXIDASE, Holzforschung, 47(3), 1993, pp. 219-224
Citations number
27
Categorie Soggetti
Forestry,"Materials Science, Paper & Wood
Journal title
Holzforschung → ACNP
ISSN journal
00183830
Volume
47
Issue
3
Year of publication
1993
Pages
219 - 224
Database
ISI
SICI code
0018-3830(1993)47:3<219:NMOTCC>2.0.ZU;2-H
Abstract
The degradation of non-phenolic beta-1 and beta-O-4 dimeric lignin mod el compounds, when catalyzed by lignin peroxidase, is discussed based on published experimental results. The previously neglected but fundam ental differences in the reactions between beta-1 and beta-O-4 models are explained in detail. A novel C(alpha)-C(beta) cleavage mechanism i n the beta-O-4 compounds is presented taking into account the resonanc e forms after one-electron oxidation involving the intramolecular tran sfer of the cation radical center to the C(beta)-ether oxygen.