| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Candelier, Kévin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Heat treatment of poplar plywood: modifications in physical, mechanical and durability propertiescitations
- 2021Assessment of catalytic torrefaction promoted by biomass potassium impregnation through performance indexescitations
- 2021A potassium responsive numerical path to model catalytic torrefaction kineticscitations
- 2020Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woodscitations
- 2019Termite and decay resistance of bioplast-spruce green wood-plastic compositescitations
- 2018Comparative study of local Tunisian woods properties and the respective qualities of their charcoals produced by a new industrial eco-friendly carbonization processcitations
- 2017Some physical and mechanical characterization of Tunisian planted #Eucalytus loxophleba# and #Eucalyptus salmonophloia# woods
- 2017Developing biocomposites panels from food packaging and textiles wastes: Physical and biological performancecitations
- 2017Resistance of thermally modified ash (#Fraxinus excelsior# L.) wood under steam pressure against rot fungi, soil-inhabiting micro-organisms and termitescitations
- 2016Study on chemical oxidation of heat treated lignocellulosic biomass under oxygen exposure by STA-DSC-FTIR analysiscitations
- 2016Control of wood thermal treatment and its effects on decay resistance: a reviewcitations
- 2015Heat treatment of tunisian soft wood species: effect on the durability, chemical modifications and mechanical propertiescitations
- 2015Impact of location and forestry conditions on some physical and mechanical properties of northern Tunisian #Pinus pinea# L. woodcitations
- 2015Mechanical characterization of heat-treated ash wood in relation with structural timber standards
- 2015Utilization of temperature kinetics as a method to predict treatment intensity and corresponding treated wood quality: Durability and mechanical properties of thermally modified woodcitations
- 2014Advantage of vacuum versus nitrogen to achieve inert atmosphere during softwood thermal modification
- 2013Utilization of TG-DSC to study thermal degradation of beech and silver fir
- 2013Effect of the nature of the inert atmosphere used during thermal treatment on chemical composition, decay durability and mechanical properties of wood
- 2013Comparison of chemical composition and decay durability of heat treated wood cured under different inert atmospheres: Nitrogen or vacuumcitations
- 2013Comparison of mechanical properties of heat treated beech wood cured under nitrogen or vacuumcitations
Places of action
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article
Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woods
Abstract
Thermal modification of wood is a promising alternative to chemical and biocidal modification processes, increasing the biological durability and dimensional stability of wood. However, the wood-decay resistance properties of heat-treated wood are still not well known. The main objective of this study was to determine the biological resistance of heat-treated ash wood, and assess the antifungal and anti-termite activity of extractive compounds from heat-treated ash woods, depending on the intensity of the modification process (2 hours at 170, 200, 215, 228 (°C) - steam pressure). Untreated and heat-treated wood samples were extracted with water or acetone. The extracts were then used to determine inhibition effectiveness against white-rot (Trametes versicolor) and brown-rot (Rhodonia placenta) fungi. Whatman papers impregnated with extractives were used to evaluate the inhibition of termite feeding. Lastly, the extractives were analyzed by Gas Chromatography - Mass Spectrometry (GC-MS) and compared for their level of anti-termite and antifungal activity. The results showed that the degree of antifungal activity of these extracts depended on the solvent used during the extraction process and varied depending on heat treatment intensity. The extracts were more effective against brown-rot than white-rot fungi. However, the anti-termite activity of heat-treated ash wood extracts was not really significant. A GC-MS analysis showed that the main share of the extractives in untreated wood was removed. In addition, new chemical elements were generated by the thermal degradation of wood polymers (lignin and hemicelluloses), including aliphatic acids, monosaccharides and other products resulting from their dehydration reaction. The most abundant element was syringaldehyde, from lignin derived compounds, which might explain the antifungal activities of thermally treated ash wood extracts.