Research article - Peer-reviewed, 2009
Comparison between 10,000-year old and contemporary spruce lignin
Christiernin, Maria; Notley, Shannon M.; Zhang, Liming; Nilsson, Thomas; Henriksson, GunnarAbstract
Wood from white spruce Picea glauca that had been preserved by rapid burial in lake sediments 10,000 years ago, was investigated and compared to a contemporary reference white spruce wood. The 10,000-year old sample appeared to have an intact primary cell wall and middle lamella, whereas the carbohydrate monomer distribution, and microscopic images showed that the secondary wall was at least partially removed, indicating that this structure had been selectively attacked by bacteria. The Klason lignin amount in the aged spruce was found to be 60%. The relative lignin monomer content in the aged spruce was 9% lower than that of the reference wood, showing that there were fewer beta-O-4' linkages in the aged sample. This finding was supported by SEC analysis of the thioacidolysed samples as a larger proportion of lignin oligomers were observed in the aged spruce than in the reference material. This indicates a somewhat greater number of condensed bonds in the aged spruce than in the reference spruce sample. Quantitative (13)C NMR analysis and HSQC techniques applied on milled wood lignins (MWL) revealed no significant structural differences between the aged spruce and the reference.Published in
Wood Science and Technology2009, volume: 43, number: 1-2, pages: 23-41
Publisher: SPRINGER
Authors' information
Christiernin, Maria
AstraZeneca
Notley, Shannon M.
Zhang, Liming
Royal Institute of Technology (KTH)
Nilsson, Thomas
Swedish University of Agricultural Sciences, Department of Forest Products
Nilsson, Thomas
Henriksson, Gunnar
Royal Institute of Technology (KTH)
UKÄ Subject classification
Wood Science
Publication Identifiers
DOI: https://doi.org/10.1007/s00226-008-0222-5
URI (permanent link to this page)
https://res.slu.se/id/publ/44577