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Article

Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi

Lithuanian Research Centre for Agriculture and Forestry, Institute of Forestry, Liepų str. 1, Girionys, LT-53101 Kaunas District, Lithuania
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Academic Editor: Diego Moldes Moreira
Forests 2021, 12(5), 645; https://doi.org/10.3390/f12050645
Received: 5 May 2021 / Revised: 15 May 2021 / Accepted: 17 May 2021 / Published: 19 May 2021
(This article belongs to the Section Wood Science and Forest Products)
Treatment of wood with various physical and chemical factors can change the number of wood parameters, which can also lead to changes in resistance to wood-destroying fungi. This study evaluates the effects of hydrothermal treatments (additives Fe2O3 or FeCl3 with and without commercial tannins, also without additives and fresh wood) on decay and mould fungi resistance of modified wood of Scots pine (Pinus sylvestris), Norway spruce (Picea abies), Douglas fir (Pseudotsuga menziesii), walnut (Juglans regia), and Norway maple (Acer platanoides). For wood samples, the resistance against wood decay fungi Trametes versicolor (white rot) and Coniophora puteana (brown rot) and the resistance against mould fungi Aspergillus niger and Penicillium sp. were assessed. The study findings showed that wood modified with iron compounds could cause a higher resistance to wood-destroying fungi. The weight losses of the modified and control wood, caused by T. versicolor and C. puteana, differed for coniferous and deciduous: the average weight loss of treated pine, spruce, and fir wood caused by C. puteana was higher than that caused by T. versicolor, while these differences on maple and walnut wood were not significant. The wood hydrothermal treatment with Fe2Cl3 with and without tannins significantly reduced the weight loss caused by T. versicolor and C. puteana, and the treatment with Fe2O3 slightly improved the decay resistance. For the wood, hydrothermally modified with FeCl3 and FeCl3 + tannins, the mould area for both tested Aspergillus niger and Penicillium sp. was smallest for the wood of all tested tree species compared to other treatments. A different response was obtained for coniferous and deciduous tree species wood. The spruce wood, followed by fir wood, treated with FeCl3 with and without tannins, was the most resistant against the mould fungi. Relatively low resistance against the mould fungi was fixed for the maple wood treated by various iron compounds, except the treatment with Fe2O3 + tannins, which gave a very positive response against the Penicillium sp. View Full-Text
Keywords: wood modification; iron oxide; iron salt; tannins; decay test; mould test wood modification; iron oxide; iron salt; tannins; decay test; mould test
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MDPI and ACS Style

Aleinikovas, M.; Varnagirytė-Kabašinskienė, I.; Povilaitienė, A.; Šilinskas, B.; Škėma, M.; Beniušienė, L. Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi. Forests 2021, 12, 645. https://doi.org/10.3390/f12050645

AMA Style

Aleinikovas M, Varnagirytė-Kabašinskienė I, Povilaitienė A, Šilinskas B, Škėma M, Beniušienė L. Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi. Forests. 2021; 12(5):645. https://doi.org/10.3390/f12050645

Chicago/Turabian Style

Aleinikovas, Marius, Iveta Varnagirytė-Kabašinskienė, Aistė Povilaitienė, Benas Šilinskas, Mindaugas Škėma, and Lina Beniušienė. 2021. "Resistance of Wood Treated with Iron Compounds against Wood-Destroying Decay and Mould Fungi" Forests 12, no. 5: 645. https://doi.org/10.3390/f12050645

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