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Predicting the chemical composition of juvenile and mature woods in Scots pine (Pinus sylvestris L.) using FTIR spectroscopy
Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, Sweden; Department of Genetics and Breeding, Faculty of Agrobiology and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic; Key Laboratory of Forest Genetics and Biotechnology, Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China.ORCID iD: 0000-0003-1275-9906
Umeå University, Faculty of Science and Technology, Department of Chemistry.ORCID iD: 0000-0002-2298-8844
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2020 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225Article in journal (Refereed) Epub ahead of print
Abstract [en]

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.

Place, publisher, year, edition, pages
Springer, 2020.
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Wood Science
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URN: urn:nbn:se:umu:diva-168869DOI: 10.1007/s00226-020-01159-4ISI: 000516040300001OAI: oai:DiVA.org:umu-168869DiVA, id: diva2:1415724
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Swedish Research Council Formas, 2014-00171Available from: 2020-03-19 Created: 2020-03-19 Last updated: 2020-03-19

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Funda, TomasGorzsás, András

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