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Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment

Building structures made from fir wood are often attacked by wood-destroying insects for which the terpenes it contains serve as attractants. One of the possibilities for extending the lifetime of structures is to use older wood with a lower content of terpenes and/or thermally modified wood. The st...

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Autores principales: Kačík, František, Veľková, Veronika, Šmíra, Pavel, Nasswettrová, Andrea, Kačíková, Danica, Reinprecht, Ladislav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268138/
https://www.ncbi.nlm.nih.gov/pubmed/22910123
http://dx.doi.org/10.3390/molecules17089990
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author Kačík, František
Veľková, Veronika
Šmíra, Pavel
Nasswettrová, Andrea
Kačíková, Danica
Reinprecht, Ladislav
author_facet Kačík, František
Veľková, Veronika
Šmíra, Pavel
Nasswettrová, Andrea
Kačíková, Danica
Reinprecht, Ladislav
author_sort Kačík, František
collection PubMed
description Building structures made from fir wood are often attacked by wood-destroying insects for which the terpenes it contains serve as attractants. One of the possibilities for extending the lifetime of structures is to use older wood with a lower content of terpenes and/or thermally modified wood. The study evaluated the levels of terpenes in naturally aged fir wood (108, 146, 279, 287 and 390 years) and their decrease by thermal treatment (the temperature of 60 °C and 120 °C, treatment duration of 10 h). Terpenes were extracted from wood samples by hexane and analyzed by gas-chromatography mass-spectrometry (GC-MS). The results indicate that recent fir wood contained approximately 60 times more terpenes than the oldest wood (186:3.1 mg/kg). The thermal wood treatment speeded up the release of terpenes. The temperature of 60 °C caused a loss in terpenes in the recent fir wood by 62%, the temperature of 120 °C even by >99%. After the treatment at the temperature of 60 °C the recent fir wood had approximately the same quantity of terpenes as non-thermally treated 108 year old wood, i.e., approximately 60–70 mg/kg. After the thermal treatment at the temperature of 120 °C the quantity of terpenes dropped in the recent as well as the old fir wood to minimum quantities (0.7–1.1 mg/kg). The thermal treatment can thus be used as a suitable method for the protection of fir wood from wood-destroying insects.
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spelling pubmed-62681382018-12-12 Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment Kačík, František Veľková, Veronika Šmíra, Pavel Nasswettrová, Andrea Kačíková, Danica Reinprecht, Ladislav Molecules Article Building structures made from fir wood are often attacked by wood-destroying insects for which the terpenes it contains serve as attractants. One of the possibilities for extending the lifetime of structures is to use older wood with a lower content of terpenes and/or thermally modified wood. The study evaluated the levels of terpenes in naturally aged fir wood (108, 146, 279, 287 and 390 years) and their decrease by thermal treatment (the temperature of 60 °C and 120 °C, treatment duration of 10 h). Terpenes were extracted from wood samples by hexane and analyzed by gas-chromatography mass-spectrometry (GC-MS). The results indicate that recent fir wood contained approximately 60 times more terpenes than the oldest wood (186:3.1 mg/kg). The thermal wood treatment speeded up the release of terpenes. The temperature of 60 °C caused a loss in terpenes in the recent fir wood by 62%, the temperature of 120 °C even by >99%. After the treatment at the temperature of 60 °C the recent fir wood had approximately the same quantity of terpenes as non-thermally treated 108 year old wood, i.e., approximately 60–70 mg/kg. After the thermal treatment at the temperature of 120 °C the quantity of terpenes dropped in the recent as well as the old fir wood to minimum quantities (0.7–1.1 mg/kg). The thermal treatment can thus be used as a suitable method for the protection of fir wood from wood-destroying insects. MDPI 2012-08-21 /pmc/articles/PMC6268138/ /pubmed/22910123 http://dx.doi.org/10.3390/molecules17089990 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Kačík, František
Veľková, Veronika
Šmíra, Pavel
Nasswettrová, Andrea
Kačíková, Danica
Reinprecht, Ladislav
Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title_full Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title_fullStr Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title_full_unstemmed Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title_short Release of Terpenes from Fir Wood during Its Long-Term Use and in Thermal Treatment
title_sort release of terpenes from fir wood during its long-term use and in thermal treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268138/
https://www.ncbi.nlm.nih.gov/pubmed/22910123
http://dx.doi.org/10.3390/molecules17089990
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