SciELO - Scientific Electronic Library Online

 
vol.22 issue4Durability of Eucalypts wood in soil bed and field decay testsEnhancing mechanical and surface properties of Eucalyptus wood author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Maderas. Ciencia y tecnología

On-line version ISSN 0718-221X

Abstract

MAHMOUD KIA, Morad et al. The efficiency of Pistacia atlantica gum for increasing resistance of rapeseed oil-heat treated wood to fungal attacks. Maderas, Cienc. tecnol. [online]. 2020, vol.22, n.4, pp.457-466. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2020005000404.

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.

Keywords : Fungal resistance; oil-heat treated wood; Penicillium expansum; Pistacia atlantica; Populus deltoids; Trametes versicolor..

        · text in English     · English ( pdf )