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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad del Bío Bío
2020
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=48565177004 https://www.redalyc.org/journal/485/48565177004/ https://www.redalyc.org/journal/485/48565177004/html/ https://www.redalyc.org/journal/485/48565177004/48565177004.epub https://www.redalyc.org/journal/485/48565177004/movil |
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Sommario:
- The efficiency of Pistacia atlantica gum for increasing resistance of rapeseed oil-heat treated wood to fungal attacks Morad Mahmoud Kia Asghar Tarmian Ali Naghi Karimi Hadi Gholamiyan Ali Abdulkhani Mohamad Reza Mastri Farahani Agrociencias oil Populus deltoids Fungal resistance heat treated wood Pistacia atlantica In this research, we used Pistacia atlantica gum during cooling phase of oil-heat treatment of poplar wood (Populus deltoids) to improve its resistance to the white-rot fungus Trametes versicolor and growth of the mold fungus Penicillium expansum. Thermal modification was carried out using rapeseed oil at 180 °C, 200 °C and 220 °C for 2 hours and 4 hours. The modified wood specimens were then directly cooled in the oil containing 0 %, 5 % and 10 % (w/w) of the gum at 25 °C for 30 minutes. The chemical constituents of the essential oil extracted with a Clevenger type apparatus were determined by chromatography-mass spectrometry (GC-MS). The amounts of α-pinene, β-pinene and α-terpinolene of the essential oil were 60,2 %, 8,7 % and 3,9 %, respectively. The mold resistance was greatly improved, while the improvement against the decay fungus was only observed for the specimens modified at 180 °C. Our results confirmed that the enhanced fungal resistance was not only due to the presence of monoterpenes in the essential oil, but also to a further reduction in the hygroscopicity of the treated wood. 2020 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48565177004 https://www.redalyc.org/journal/485/48565177004/ https://www.redalyc.org/journal/485/48565177004/html/ https://www.redalyc.org/journal/485/48565177004/48565177004.epub https://www.redalyc.org/journal/485/48565177004/movil en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.4 Vol.22