| Journal: | Maderas : ciencia y tecnología |
| Database: | |
| System number: | 000534518 |
| ISSN: | 0718-221X |
| Authors: | Mahmoud Kia, Morad1 Tarmian, Asghar1 Karimi, Ali Naghi1 Gholamiyan, Hadi1 Abdulkhani, Ali1 Mastri Farahani, Mohamad Reza2 |
| Institutions: | 1University of Tehran Faculty of Natural Resources Department of Wood and Paper Science and Technology, Karaj. Iran 2Gorgan University of Agricultural Sciences and Natural Resources Department of Wood Engineering and Technology, Gorgan. Iran |
| Year: | 2020 |
| Volumen: | 22 |
| Number: | 4 |
| Pages: | 457-466 |
| Country: | Chile |
| Language: | Inglés |
| English abstract | 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. |
| Keyword: | Fungal resistance, Oil-heat treated wood, Penicillium expansum, Pistacia atlantica, Populus deltoids, Trametes versicolor. |
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