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Natural durability and phenolic content in dried Scots Pine heartwood
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-3544-8716
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-7711-9267
2010 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 5, no 2, p. 1126-1142Article in journal (Refereed) Published
Abstract [en]

The durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a decay test with a brown rot fungus (Coniophora puteana), and the concentration of total phenolics was measured according to the Folin-Ciocalteu (FC) assay. The relation between mass loss and phenolics in dried heartwood showed a weaker negative correlation at lower levels of phenolics as compared to the strong relationship found in a study on heartwood from standing Scots pine trees. Mass loss in dried heartwood showed a weak negative correlation to density. Heating of extractives-rich green sawdust under moist conditions resulted in a reduction of phenolics with temperature up to 180 oC and with increasing time. The concentration of phenolics in heated, green sawdust was higher in extractives-rich pine heartwood than in heartwood with a normal extractives content.

Place, publisher, year, edition, pages
2010. Vol. 5, no 2, p. 1126-1142
National Category
Bio Materials
Research subject
Wood Physics
Identifiers
URN: urn:nbn:se:ltu:diva-2889Local ID: 09dafa80-5100-11df-a0f4-000ea68e967bOAI: oai:DiVA.org:ltu-2889DiVA, id: diva2:975743
Note
Validerad; 2010; 20100426 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_05_2_1126_SehlstedtPersson_PK_Heating_of_Heartwood/619http://www.bioresourcesjournal.com/

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Sehlstedt-Persson, MargotKarlsson, Olov

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