Your search resulted in 979 documents. Displaying 25 entries per page.
Impregnation of wood with antifungal compounds from low-quality tree biomass
2022 - IRG/WP 22-30763
…stilbenes and flavonoids were prepared for the antifungal assay. The extracts were colorimetrically analyzed on antioxidant properties by measuring free radical scavenging activity. The resistance of with extractives impregnated wood was measured with a so-called mini-block test (modified EN 113). Wood of…
V Vek, I Poljanšek, A Balzano, M Humar, P Oven
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…on its surface or by full-volume impregnation with antifungal chemicals. However, due to environmental and health concerns, the most frequently chosen solution, the use of biocidal preservatives, has become limited and new non-biocidal methods to protect wood against wood-destroying organisms are investigated.…
K Kurkowiak, L Emmerich, H Militz
Steam Pre-conditioning Treatment Prior to Acetylation: Impact on Dimensional Stability, Moisture Response Behaviour, and White-Rot Fungal Resistance of Hevea brasiliensis and Mitragyna ciliata Wood
2022 - IRG/WP 22-40930
The effect of steam pre-conditioning treatment on the dimensional stability, moisture response behaviour, and durability against white-rot fungus P. chrysosporium of acetylated Hevea brasiliensis and Mitragyna ciliata wood species were assessed. Defect-free sp…
E Uchechukwu Opara, J Mayowa Owoyemi, J Adeola Fuwape
Evaluation of different wood by-products for sustainable building biomaterial production using fungal mycelium
2022 - IRG/WP 22-50373
…carried out: first the selection of the fastest growing fungal strains and the process’ temperature; secondly, three different grain spawn media were evaluated for inoculum production and the last one was a qualitative screening of mycelium growth in different wood by-products. G. lucidum, T. versicolor and P.…
C Charpentier-Alfaro, M Poggerini, S Palanti, G Della Rocca, D Pellegrini, A Crisci
Evaluation of decay and energy properties from thermally modified biomasses during fungal deterioration by NIR-spectrometry
2021 - IRG/WP 21-40922
This study is focused on the prediction of fungal weight loss (WL) and high heating value (HHV) from raw and torrefied waste lignocellulosic feedstocks, according to their exposure duration to wood-destroying fungi, using near infrared spectroscopy (NIR) and chemometrics models.
Sugarcane bagasse,…
B de Freitas Homem de Faria, P Santana Barbosa, J Valente Roque, A de Cassia Oliveira Carneiro, P Rousset, K Candelier, R F Teofilo
Profiling fungal degradation of Scots pine sapwood by short wave infrared hyperspectral image analysis
2020 - IRG/WP 20-20667
Hyperspectral image analysis of Scots pine sapwood wood affected by decay fungi has been carried out as part of a Ph.D. thesis within the project Remote Inspection of Wooden Utility Poles (RIWUP).
In a lab experiment, Petri-dishes with Scots pine sapwood samp…
A Jochemsen, G Alfredsen, I Burud
Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation
2020 - IRG/WP 20-40889
Water is an essential parameter for fungal degradation of wood, but degradation primarily occurs at high moisture levels at water potential in the range of -4 to -0.1 MPa, which corresponds to 97-99.9% relative humidity. At these moisture levels, water is present in the wood structure both in…
M Fredriksson, E Engelund Thybring, Ramunas Digaitis
Impact of fungal decay on the bending properties of wood
2020 - IRG/WP 20-20671
Wood used outdoors is generally prone to fungal degradation, and its impact on the structural integrity of wood is an immanent factor for service life planning with timber. Wood decayed to very small mass losses can suffer from a significant reduction in mechanical strength and elastic properties.…
S Bollmus, P B van Niekerk, C Brischke
Fungal colonisations in and on industrially manufactured acetylated glulam in UC 3
2020 - IRG/WP 20-40900
This poster paper describes one of the first cases where industrially acetylated glulam was colonized by wood-destroying fungi after less than 10 years of exposure in use class 3.2. Remarkable is that fruiting bodies of white as well as brown rot fungi were fo…
J Müller, E Melcher, T Potsch
Non-stochiometric oxidation and ROS generation promoted by guaiacol lignin structures and lignocelluose surfaces may be a component of brown rot fungal degradation mechanisms
2019 - IRG/WP 19-10937
…to generate electrons that would promote action by fungal enzymes that require an electron donor. The data also demonstrate how hydroxyl radicals would be generated to promote the generation of low levels of formaldehyde from lignin under conditions when lignin surfaces were exposed.
Y Tamarua, M Yoshidaa, L D Eltisb, B Goodell
Identifying the fungal community on western redcedar (Thuja plicata) wood in field tests above and in ground contact exposure: preliminary results
2019 - IRG/WP 19-10939
…redcedar in service, we conducted a study looking at the fungal community on wood that has been in field tests and monitored for decay for many years. We sampled old growth and second growth western redcedar fence posts that have been in ground contact for 17 years, and deck boards that have been in an above ground…
A Dale, S Kus, R Stirling
From fungal detoxification systems to wood durability in neotropical forests
2019 - IRG/WP 19-10946
White-rot fungi are able to mineralize all the wood components due in particular to an efficient detoxification system. We hypothesised that components of this detoxification systems, glutathione transferases, could be used as tools to explore the natural dura…
T Perrot, G Salzet, N Amusant, J Duchene, E Gelhaye
Exploring the use of X-ray micro CT as a tool for the monitoring of moisture production and mass loss during lab-based fungal degradation testing
2019 - IRG/WP 19-20654
…associated with X-ray CT scanning for monitoring of fungal degradation during lab testing. First, dose tests were performed to assess the recovery potential of brown-rot fungus Coniophora puteana after exposure to X-radiation. Then, a set-up was designed allowing for a stack of Petri dishes to be scanned…
L De Ligne, J Van den Bulcke, A De Muynck, J M Baetens, B De Baets, L Van Hoorebeke, J Van Acker
Using X-ray scattering to elucidate the mechanisms behind the moisture and fungal decay resistance of epoxybutene modified wood
2019 - IRG/WP 19-40854
Chemical modification of the hydroxyl groups of wood can improve the properties of wood by providing moisture and biological resistance, as well as dimensional stability. Southern pine solid wood was chemically modified to various weight percentage gains (WPG)…
R E Ibach, N Plaza
Fungal damages in Norwegian massive timber elements – causes and measures
2019 - IRG/WP 19-40879
…construction errors such as faulty fittings or membranes. Fungal growth was observed in all but three cases, while decay was found in six cases. High moisture content within CLT elements did not cause fungal growth if the surfaces were kept dry. The major decaying agent in outdoor exposed CLT was Gloeophyllum…
M S Austigard, J Mattsson
Performance if internal remedial treatments to arrest fungal attack in poles and large timbers
2018 - IRG/WP 18-40834
…remedial treatments have been used to arrest internal fungal attack in utility poles and other large timbers. Water diffusible systems and volatile fumigants have both been used for this purpose. While both work, it is important to understand the performance attributes of each system. This paper reviews the…
J J Morrell
Impact of temperature and relative humidity on spatio-temporal fungal growth dynamics of Basidiomycetes
2018 - IRG/WP 18-10905
…thrive, and how the environmental conditions affect fungal growth characteristics, is therefore of particular interest. In this paper, we use image analysis to assess the impact of the environmental conditions on the growth dynamics of Coniophora puteana. Fungal growth characteristics were tracked over time…
L De Ligne, G Vidal-Diez de Ulzurrun, J Van den Bulcke, J M Baetens, B De Baets, J Van Acker
The Impact of Cryopreservation Techniques and of Water Quality on the Wood Degrading Ability of Fungal Strains: Recommendations for Maintenance and Culturing Procedures
2018 - IRG/WP 18-20636
…-80°C. The main objective was to prevent decrease of the fungal virulence that may occur due to repeated routine sub-culturing procedures and to optimize the reactivation percentage of the strains, which is a particularly challenging issue in the case of Basidiomycetes fungi. In addition, the influence of the…
A Stum, M Montibus, I le Bayon, M Kutnik
Liquefied wood polyols: a bio-based preservative for protection of wood from fungal decay
2018 - IRG/WP 18-30725
…Investigation indicated that phenolated wood inhibited fungal growth in the wood. The fungicidal traits of phenolated wood showed higher antifungal efficacy against both white rot and brown rot of wood whereas wood samples impregnated with liquefied wood in glycerol and polyethylene glycol shows insignificant…
A Kumar, G Vijaylakshmi, S Singh Chauhan
Prevention of fungal damage of oil and date palm wood by organic acids
2017 - IRG/WP 17-10877
Felled palm trunks are susceptible to fungi as long as their moisture content is above fibre saturation. During this period, palm wood has to be protected against mould and rot fungi. Environmental-friendly organic acids are suitable. Small samples of oil palm…
M Bahmani, O Schmidt
Interactions between fungal glutathione transferases and wood extractives
2017 - IRG/WP 17-10894
The interactions between extractives from several tree species of French Guyana and glutathione transferases (GST) from the white-rot Trametes versicolor have been studied. These interactions have been monitored using a thermal shift assay. It appears from the…
T Perrot, F Saiag, N Amusant, S Dumarçay, P Gérardin, M Morel-Rouhier, R SormaniI, E Gelhaye
Fungal growth on coated wood exposed outdoors: influence of coating pigmentation, cardinal direction and inclination of wood surfaces
2017 - IRG/WP 17-10896
…One of the objective of this project was to study fungal growth of the field exposed panels. Two coatings applied in 2 and 3 coats were exposed for one year outdoors at 45° south: one solventborne (alkyd based) and one waterborne (acrylic based) both in clear and pigmented versions. Fungal growth visually…
L Podgorski, C Reynaud, M Montibus
Anti-fungal activity of rutin and rutin-metal complexes as wood protectants
2017 - IRG/WP 17-30708
The anti-fungal activity of Rutin, a flavonoid, alone or complexed with copper or zinc was investigated in a petri dish test with Gloeophyllum trabeum and Trametes versicolor as the test fungi. Rutin and the Rutin-metal complexes showed significant inhibition against…
Li Yan, J J Morrell, Jie Zhong, Xiuzhu Mao
Hybrid green composites manufactured with glass fiber and jute fabric skin by VARTM process: Fungal, mold, and termite resistance tests
2017 - IRG/WP 17-40780
…(VARTM). Petri dish test method was followed to evaluate fungal resistance of produced composite specimens by employing Fomitopsis palustris, Trametes versicolor and Serpula lacyrmans. The specimens were also subjected to mold resistance tests. Test specimens were then bio-assayed against the termites in laboratory…
S N Kartal, E Terzi, M Muin, A H Hassanin, T Hamuoda, A Kilic, Z Candan
NGS analysis of fungal OTUs in Aquilaria sp. from French Guyana, Cambodia, Laos and Thailand
2017 - IRG/WP 17-50328
…produce agarwood in their field. That’s why we wonder if fungal communities inducing agarwood are the same between these countries.
NGS was used to characterize fungal communities associated with agarwood. 693,961 sequences that cover ITS2 estimated about 250 bp have been obtained. These sequences have been…
C Zaremski, C Malandain, O Sibourg, C Andary, G Michaloud, M Ducousso, N Amusant, A Zaremski