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Multivariate modeling of mould growth in relation to extractives in dried Scots pine sapwood
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-7711-9267
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-7864-8091
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: 0000-0003-2247-674X
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2017 (English)In: Proceedings IRG Annual Meetin, 2017, article id 17-20629Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Influence of extractives on mould growth on Scots pine sapwood dried in air or in kiln was studied. Boards were sprayed with water mixtures of spores of the fungal species Penicillium sp., Aspergillus sp., Mucor sp., Paecilomyces sp., Trichoderma sp., treated at a temperature of 22ºC at 90% RH, classified into a percentage of covered area. Acetone and water extracts were isolated and analyzed for sugars, nitrogen, ash, resin/fatty acids, glycerol, and phenols. A multivariate Orthogonal Partial Least Squares (OPLS) regression model was developed to study relations between the extent of mould coverage of boards and chemical content. The model describes 51% variability in X and 69% in Y with prediction power of 55%. The results indicated that total acetone soluble extractives and sugars like glucose contributed to increased mould growth whereas fatty acids prevent mould growth.

Place, publisher, year, edition, pages
2017. article id 17-20629
Keywords [en]
Multivariate analysis, sapwood, fungi
National Category
Materials Engineering Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-63985OAI: oai:DiVA.org:ltu-63985DiVA, id: diva2:1109400
Conference
48th Conference of the International Research Group on Wood Protection, IRG48, Ghent, Belgium, 4-8 Jun 2017
Available from: 2017-06-14 Created: 2017-06-14 Last updated: 2019-06-14Bibliographically approved
In thesis
1. Characterization of Mould Fungi Growth on Scots Pine Sapwood Surfaces
Open this publication in new window or tab >>Characterization of Mould Fungi Growth on Scots Pine Sapwood Surfaces
2019 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2019
National Category
Wood Science Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
urn:nbn:se:ltu:diva-73793 (URN)978-91-7790-380-2 (ISBN)978-91-7790-381-9 (ISBN)
Presentation
2019-06-12, A193, Forskargatan 1, Skellefteå, 09:00 (English)
Opponent
Supervisors
Available from: 2019-05-02 Created: 2019-04-30 Last updated: 2019-06-14Bibliographically approved

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IRG/WP 17-20629(557 kB)74 downloads
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a9ae430fe3ebab24963b460c1a94bb0ec49d35ae6bb79c294dc41c24fb9918cf24b09066ee6a0f5eddc2fd54486c4fb6ed96c2db55b09ff181856836effe4aee
Type fulltextMimetype application/pdf

Authority records BETA

Karlsson, OlovMyronycheva, OlenaSehlstedt-Persson, MargotÖhman, MicaelSandberg, Dick

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CiteExportLink to record
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