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Research article - Peer-reviewed, 2020

Predicting the chemical composition of juvenile and mature woods in Scots pine (Pinus sylvestris L.) using FTIR spectroscopy

Funda, Tomas; Fundova, Irena; Gorzsas, Andras; Fries, Anders; Wu, Harry X.;

Abstract

The chemical composition of wood is one of the key features that determine wood quality. The focus of this study was on identifying differences between juvenile and mature woods in Scots pine (Pinus sylvestris L.) and developing models for predicting the chemical composition of these two wood types. Chemical traits, determined by traditional wet chemistry techniques, included the proportion of lignin, polysaccharides and extractives. Partial least squares regression of Fourier transform infrared (FTIR) spectra was used for model building. The model performance was primarily evaluated by root mean squared error of predictions (RMSEP). High predictive power was attained for the content of lignin (RMSEP of 0.476 and 0.495 for juvenile and mature woods, respectively) and extractives (0.302 and 0.471), good predictive power for cellulose (0.715 and 0.696) and hemicelluloses in juvenile wood (0.719) and low predictive power for hemicelluloses in mature wood (0.823). A distinct band was observed at 1693 cm(-1), and its intensity was strongly associated with the content of extractives (r = 0.968 and 0.861 in juvenile and mature woods, respectively). FTIR has proved suitable for the rapid, non-destructive, cost-efficient assessment of the chemical composition of juvenile and mature woods in Scots pine. The band at 1693 cm(-1) is to be further investigated to unravel its link with individual extractive components.

Published in

Wood Science and Technology

2020, volume: 54, number: 2, pages: 289-311
Publisher: SPRINGER

Authors' information

Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Czech University of Life Sciences Prague
Nanjing Forestry University
Fundova, Irena (Fundová, Irena)
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Fundova, Irena (Fundová, Irena)
Forestry Research Institute of Sweden, Skogforsk
Gorzsas, Andras
Umea Univ
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Beijing Forestry University
Commonwealth Scientific and Industrial Research Organisation (CSIRO)

UKÄ Subject classification

Wood Science

Publication Identifiers

DOI: https://doi.org/10.1007/s00226-020-01159-4

URI (permanent link to this page)

https://res.slu.se/id/publ/104850