Your search resulted in 649 documents. Displaying 25 entries per page.
Real-Time PCR Assays for the detection of the dry rot fungus Serpula lacrymans and its close relative Serpula himantioides
2016 - IRG/WP 16-10867
Prevention of wood decay by fungi of the phylum Basidiomycota is an important issue of wood protection. The most destructive fungus in buildings in Central Europe is the dry rot fungus Serpula lacrymans, which needs more extensive restauration measures than all other wood decay fungi. Its close relative S. himantioides occurs more frequently in outdoor environment. The assessment and remediation o...
K Jacobs, N Rangno
Modifying wood with paraffin wax emulsion impregnation and thermal modification: hydrophobization effect and mechanism of the combined treatment
2016 - IRG/WP 16-40726
The aim of this study was to enhance the water repellency of wood by a combined treatment of paraffin wax emulsion (PWE) impregnation and thermal modification. Two different treating procedures were used to modify the southern pine (pinus spp.). One is first PWE impregnation and then thermal modification, another is first thermal modification and then PWE impregnation. The treated samples were imm...
Wang Wang, Jinzhen Cao, Cong Chen
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 (Elaeis guineensis) and date palm (Phoenix dactylifera) wood were treated with 1 to 10% solutions of acetic acid and propionic acid, respec...
M Bahmani, O Schmidt
The First Description of Soft-rot Cavity in Waterlogged Archaeological Woods by a Japanese Wood Anatomist Prof. F. Onaka in 1935
2017 - IRG/WP 17-10885
The term soft rot, which was caused by Ascomycetes and Deuteromycetes, was first used by J G Savory in 1954. Soft rot decay can be characterized by cavities within secondary cell walls align along the cellulose microfibrils. Our recent literature search revealed, however, that Prof. F. Onaka in Kyoto University described the soft rot cavities in the waterlogged archaeological woods in detail from ...
Yoon Soo Kim, K Yamamoto
Thermal stability of a wood protective biofinish and the influence of flame retardants on Aureobasidium cells
2017 - IRG/WP 17-30716
In general there is an increasing need for sustainable resources, including sustainable building materials. Wood is one of these sustainable resources and is more used as an outdoor building material. Since unprotected wood will usually be degraded during outdoor exposure, many different protection systems are available on the market. Protection systems containing biocides however might create obs...
S Rensink, E A M Klein Rot, M F Sailer
Agar block durability test of plywood made of neem (Azadiracta indica) leaves treated veneer using two white rot fungi
2017 - IRG/WP 17-40782
This study has been undertaken to investigate the durability of plywood made from non-durable wood (simul, Bombax ceiba) veneer treated by neem (Azadiracta indica, A. Juss.) leaves. The veneers were treated with cold and hot water solution of neem leaves of different concentrations (10%, 5%, 2.5%) and treatment durations (1, 2, 3 days) for cold water and 20, 40 and 60 minutes for hot water. The pl...
K Akhter, M A Hashem, S Akhter
Biodegradation of creosote by white rot fungus Phanerochaete chrysosporium and a strains of Pseudomonas
2017 - IRG/WP 17-50329
The aim of this study was to determine degradation effectiveness of polycyclic aromatic hydrocarbons (PAH) contained in creosote by white rot fungus and bacteria. The following two species of bacteria Pseudomonas putida and Pseudomonas sp. as well as Phanerochaete chrysosporium fungus characterised by the ability to decompose aromatic compounds were selected for experiments. Bacterial strains were...
J Zabielska-Matejuk, A Stangierska, A Kropacz, E Kaczorek
Effects of exposure time on detection of the behavior of white-rot fungi on Oriental beech wood properties
2017 - IRG/WP 17-10902
The comparison of fungal degradation of Orientalis beechwood by two white-rot fungi was evaluated in this study. Biological, mechanical, and chemical assessments of beech wood were carried out at 30 day interval for 120 days. The results demonstrated that both fungi have greater effects on beech wood during each exposure time. However, Trametes versicolor degraded beech wood more effectively than ...
E Bari, D D Nicholas, K M Ohno
Interactions between wood polyphenols and detoxification enzymes of the white rot Trametes versicolor
2018 - IRG/WP 18-10906
Wood decay fungi have complex detoxification systems that enable them to cope with secondary metabolites produced by plants. Although the number of genes encoding for glutathione transferases (GSTs) is especially expanded in lignolytic fungi, little is known about their physiological target molecules. In this study, by combining thermal shift assay and affinity crystallography we highlighted inter...
M Schwartz, T Perrot, E Aubert, S Dumarçay, F Favier, P Gérardin, M Morel-Rouhier, G Mulliert, F Saiag, C Didierjean, E Gelhaye
Preliminary Investigation into the Natural Decay Resistance of Nigerian Grown Hevea brasiliensis and Mitragyna ciliata wood to Phanerochaete chrysosporium White-Rot Fungus
2018 - IRG/WP 18-10919
Wood is an important and versatile structural building material that finds applications in numerous uses. However, wood is also a biological material vulnerable to degradation by microbial activities; this is especially true in the tropics. Following the scarcity of highly durable species from our natural forests and the introduction of so many lesser used/durable wood species into the booming tim...
J M Owoyemi, U O Emmanuel
The biodegradation of creosote oil by various species of white rot fungi and bacteria isolated from the contaminated soil
2018 - IRG/WP 18-50334
The aim of the study was to determine biodegradation effectiveness of the selected polycyclic aromatic hydrocarbons (PAHs) contained in creosote oil, by two white rot fungal species (Bjerkandera adusta and Irpex lacteus) and three bacterial species (Pseudomonas putida, Pseudomonas sp. OS4 and Rahnella aquatilis). Bacteria were isolated from the soil contaminated with petroleum hydrocarbons from th...
M Sydow, J Zabielska-Matejuk, E Kaczorek, AStangierska, A Kropacz
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 durability of neotropical wood species. Analysis of the interactions between six glutathione transferases of Trametes versicolor and extracts of...
T Perrot, G Salzet, N Amusant, J Duchene, E Gelhaye
Impact of water holding capacity and moisture content of soil substrates on the moisture content of wood in terrestrial microcosms
2019 - IRG/WP 19-20662
Terrestrial microcosms (TMC) are frequently used for testing the durability of wood and wood-based materials as well as the protective effectiveness of wood preservatives. In contrary to experiments in soil ecology sciences, the experimental set-up is usually rather simple. However, for service life prediction of wood exposed in ground, it is of immanent interest to better understand the different...
C Brischke, F L Wegener
The anti-weathering mechanism of extractives in thermally modified Scots pine
2019 - IRG/WP 19-40880
Results from the electron spin-resonance spectroscopy (ESR) analysis indicated that thermally modification of wood can inhibit the generation of phenoxyl radicals during UV irradiation and consequently lead to the increase of the color stability of wood. In order to clarify the evolution and role of extractives in thermally modified wood during the process of weathering, the compositions of aceton...
H Shen, J Cao
Pigment production by the spalting fungus Scytalidium ganodermophthorum and its industry potential
2020 - IRG/WP 20-10957
Scytalidium ganodermophthorum is best known as a pathogen of cultivated mushrooms, with infected cultures turning yellow in color. The fungus is also used in the art form known as ‘spalting’ to produce yellow, green, and purple colors in wood for decorative purposes. Wood colored by fungus in this manner has been traditionally used in the creation of fine art and woodworking since the 16th cen...
R C Van Court, P Vega Gutierrez, S C Robinson
Durability of acetylated Radiata pine: Laboratory tests and performance in practice
2020 - IRG/WP 20-40899
Wood acetylation is an established process to enhance biological durability and dimensional stability of lower valuable wood species without the use of biocides. Acetylated Radiata pine (ACCOYA® wood) has been on the market for more than 10 years now, starting in 2007.
Numerous lab tests have confirmed the high durability of acetylated Radiata pine. Here, additional data with four Radiata pine ...
K Jacobs, W Scheiding, B Weiß
Mechanical and biological durability properties against soft-rot and subterranean termite in the field (grave-yard test) of beech wood impregnated with different derivatives of glycerol or polyglycerol and maleic anhydride followed by thermal modification in an opened or in a closed system
2021 - IRG/WP 21-40917
This paper presents mechanical and biological durability properties in soil beg test (soft-rot test) and field test (grave-yard test) against subterranean termite of the wood modified with an aqueous vinylic derivative of glycerol/polyglycerol or maleic anhydride cured in an opened or in a closed system. Wood modification was performed through impregnation of European beech (Fagus sylvatica) with ...
M Mubarok, H Militz, S Dumarcay, I W Darmawan, Y S Hadi, P Gerardin
Decay capacity and degradation patterns of Xylaria hypoxylon on different wood species
2022 - IRG/WP 22-10985
A host of physical and environmental factors may influence fungal decay including the wood substrate, temperature, moisture, oxygen, light, pH, and nitrogen. Understanding the effects of these factors on fungal decay is important for the effective utilization of wood decay fungi in biotechnological processes and for understanding the role of these organisms in global carbon cycling. The ascomycete...
E Bari, G Daniel, A Singh, J J Morrell
Changes in topochemistry and mechanical properties of Beech (Fagus orientalis L.) by natural fungus infestation
2022 - IRG/WP 22-10986
Beech is one of the major hardwood species in Europe. It is, however, highly susceptible to fungal attack both in the fresh state and during the storage. Understanding the alteration in chemical and mechanical properties of beech wood during the initial degradation state can lead to improved raw material utilization. Therefore, UV-microspectrophotometer (UMSP) and High-Performance Liquid Chromatog...
H Sivrikaya, M Rehbein, F Divos, S Adamopoulos, R Hosseinpourpia
In Vitro Growth of the Basidiomycetes Physisporinus vitreus strains in various conditions in comparison with some white rot fungi
2022 - IRG/WP 22-10987
The paper has preliminary test results to select Pysisporinus vitreus fungal strains for further experiments in a large research project on copper tolerance of P. vitreus by chemotropic test, choice test, and agar plate toxicity tests and determination of the effect of various ions on oxalic acid secretion by these white rot fungi. In the project, it is also aimed to run fungal decay tests to dete...
E E Soytürk, S N Kartal
Studies into the effect of soil type and soil layer on the in-ground decay of European beech
2022 - IRG/WP 22-20681
In this study, European beech (Fagus sylvatica L.) specimens were exposed to three different soil types; Podsol (Podzol), Braunerde (Cambisol), and Pararendzina (Regosol), in adapted terrestrial microcosm (TMC) tests according to CEN/TS 15083-2 (2005). Soils were sampled (250 mm deep) from field sites and separated into their constituent layers to deliver three TMC setups; mineral soil layer only ...
B N Marais, S Kovacs, M Jansen, C Brischke
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 specimens of both species from the top, middle, and base positions were selected, prepared according to ASTM D143-09 & ASTM D-2017 standards a...
E Uchechukwu Opara, J Mayowa Owoyemi, J Adeola Fuwape
Evaluation of Decay Resistance for the Larch Wood Heat-treated with Superheated Steam
2022 - IRG/WP 22-40956
Heat-treatment of wood is a process that involves applying heat ranging 160–260°C to improve its physico-mechanical properties and resistance against wood rot fungi. The level of the changes in the wood properties by heat-treatment differs depending on the temperature and duration of heat-treatment, as well as the types of heat transfer media used for heat-treatment. The heat-treatment on wood ...
Y Park, S-M Yoon, H Kim, W-J Hwang
Characterization of cell wall morphology and water-soluble extractives in Japanese larch decayed by white-pocket-rot fungi
2024 - IRG/WP 24-11034
Porodaedalea chrysoloma (Fr.) Fiasson & Niemelä is a basidiomycete that can cause white-rot decay in Japanese larch (Larix kaempferi) heartwood. P. chrysoloma is a white-rot fungus with a unique pattern that causes white-pocket-rot in the xylem of Japanese larch. However, the mechanism by which P. chrysoloma yields the pattern of white-pocket-rot in Japanese larch heartwood remains unclear. Thus,...
Y Mori, H Arai, T Ito, H Hashitani, K Yamashita, Y Ota, M Kiguchi