Your search resulted in 44 documents. Displaying 25 entries per page.
Inhibitory effects of leachates from Scots pine wood on germination of some wood rotting fungi
1986 - IRG/WP 1282
Leachates from sapwood of Pinus sylvestris inhibited or reduced the germination of basidiospores of the wood decay fungi tested. The fungi were selected among those preferentially colonizing hardwood or softwood, representatives for brown rot and white rot fungi, early basidiomycete colonizers and late basidiomycete colonizers in above-ground parts of pine as well as fungi found in high frequencie...
J Bjurman
Gaseous treatment of timber with allyl isothiocyanate. Fungicidal and insecticidal effects
1996 - IRG/WP 96-30108
Gaseous treatment with allyl isothiocyanate (AIT) was tested for its effects on the growth of microorganisms on the wood substrate and the mortality of subterranean termites and powder-post beetles. Toxic limits of AIT were determined as concentrations in the air when an AIT-treated filter paper was placed in a sealed container with fungus-inoculated wood specimens. Those were <3.8 ppm for Aure...
K Tsunoda, T Yoshimura
Analysis of volatile organic compounds (VOC's) from Trichoderma spp.: effect of media composition on VOC production and level of inhibition of wood decay fungi
1997 - IRG/WP 97-10207
Production of volatile organic compounds (VOC's) by two Trichoderma isolates grown on either malt extract or minimal media was examined and statistically assessed to identify which VOC's were predominantly produced on each of the two media types. The VOC's were captured onto chromatographic absorbent from above the cultures of the fungi before being analysed by integrate...
A Bruce, R E Wheatley, C Hackett, A Kundzewicz
Screening of bacteria, yeasts and Trichoderma isolates for antagonism toward stain and mould fungi on agar media and wood
1999 - IRG/WP 99-20159
A screening programme of soil bacteria for antagonism toward mould and wood stain fungi was undertaken on 8 types of agar-based media by application of several bacteria to each plate. The rapid screening method was subsequently verified by testing antagonism of the most promising bacteria on Scots pine sapwood. Most of the 64 bacterial showed antagonistic effects on certain media against individua...
C Payne, A Bruce
The influence of timber species and preservative treatment on spore germination of some wood-destroying Basidiomycetes
1988 - IRG/WP 2300
Basidiospores from six wood decay fungi exhibited varying germination rates on untreated softwood and hardwood blocks. Germination inhibition of all test fungi was recorded on pine sapwood. No preference for a certain timber species by a particular fungus was evident. Whereas almost complete inhibition of germination occurred on wood treated with a quarternary-ammonium based wood preservative, mos...
B M Hegarty, G Buchwald
Algal growth resistance of paints for coating of wood; a laboratory study
1997 - IRG/WP 97-10213
Twelve paints were tested for resistance against algae. In addition, one algicidal compound commercially used for remedial treatments of algal growth on paints was tested for its effectiveness for prevention of algal growth. An agar diffusion bioassay was employed in which paint films on filter paper discs were placed on mineral salt medium and sprayed with an algal suspension containing a mixture...
J Bjurman
Antagonistic effects of Dacrymyces stillatus against growth of other fungi
1991 - IRG/WP 2363
The antagonistic effects in dual cultures on malt extract agar of 5 wood decay fungi and the antagonistic effects of Dacrymyces stillatus against 1 mould fungus and 1 blue stain fungus were determined. Dacrymyces stillatus was the only fungus which exhibited clear antagonistic effects. The effects of Dacrymyces stillatus against the different test fungi varied however to a great extent. Dacrymyces...
J Bjurman
Inhibition of the biodegradation of coniferous and broadleaved wood by new imidazolium salts
2003 - IRG/WP 03-30320
Studies were carried out on fungicidal values of fourteen potential wood preservatives – modified quaternary heteroaromatic compounds using the screening agar-block. The vacuum treated blocks (22mm x 17mm x 12mm) of Scots pine (Pinus sylvestris L.), spruce (Picea excelsa L.), beech (Fagus silvatica L.) and birch (Betula verrucosa Ehrh.) with testing compounds were exposed to Coniophota puteana a...
J Zabielska-Matejuk, J Pernak, W Wieczorek
Social and economocal impact of an extension of service life resulting of an adequate preventive treatment. Application to wooden components used in urban areas with a high density of population
1993 - IRG/WP 93-50001-15
Le document évalue les problèmes rencontrés en zone urbaine pour le sauvetage des constructions: coordination de la lutte, délimination des chantieres et des périmètres d'investigation, nuisances causées par les interventions, risques pour la santé, risques pour l'environnement. Coûts. Comparaison socio-économique du traitement préventif et des interventions à posteri...
A T De Lelis, G A C Lopez
Inducing and Stimulating Spalting in Sugar Maple
2008 - IRG/WP 08-10652
Spalted wood has gained popularity in recent years as consumer preference has shifted towards unique and custom products. The process by which spalting is induced in clear lumber has evolved over time, and now involves much more than beer drinking and outdoor burial. Our work on the process of reliably producing spalted wood began in 2004 and involved testing a wide variety of white rot fungi on...
S C Robinson, D L Richter, P E Laks
In vitro evaluation of an integrated approach using Trichoderma harzianum and chitosan for the control of sapstain
2008 - IRG/WP 08-10659
In vitro assays were undertaken to evaluate the control of two sapstain fungi, Leptographium procerum and Sphaeropsis sapinea by a combination of chitosan or chitosan oligomer (CODP-14) and a naturally mutated strain of Trichoderma harzianum. Spore germination and hyphal growth of the test fungi were assessed on media amended with chitosan or chitosan oligomer with and without T. harzianum using ...
C Chittenden, T Singh
Effect of amphiphilic antioxidant alkyl ammonium ascorbate on inhibition of fungal growth: Application to wood preservatives formulation
2008 - IRG/WP 08-30466
Amphiphilic surfactants were synthesized from ascorbic acid and different fatty amines and evaluated for formulation of wood preservation products. Characterization of physicochemical properties of the new compounds indicated classical behavior of cationic surfactants. Antioxidant properties, estimated using methyl linoleate oxidation inhibition method, were similar to that of ascorbic acid teste...
C Gérardin , T Koumbi Mounanga, P Gérardin
Inhibition of Basidiospore Germination by Copper from MCQ, ACQ and CCA Leachates
2012 - IRG/WP 12-10778
The long-term decay resistance of refractory wood shell-treated with chromated copper arsenate (CCA) in above-ground exposures has been attributed to mobile copper that migrates into checks and inhibits the germination of basidiospores. Copper from micronized copper quat (MCQ) has also been shown to migrate into checks suggesting similar performance as a shell treatment, but questions have been ra...
R Stirling, J Drummond, P I Morris
Influence of a pulsed electric field on the growth of surface fungi
2013 - IRG/WP 13-10795
The colonization of mold and staining fungi are not only an aesthetical problem. Blue stain fungi are able to penetrate paint films. Maintenance of coatings on wood are time consuming and costly. A new approach uses a pulsed electric field (PLEOT) in order to protect wood against surface fungi. This technology is evaluated in non-sterile laboratory conditions on different coated and uncoated Scots...
M Starck, A Treu
Investigations on the durability of several Congo basin wood species
2015 - IRG/WP 15-10840
The sawdust of ten wood species was studied to assess their natural resistance to decay. The extractives and lignin contents were primarily determined (between 2.7-16.0% and 26.8-35.9% respectively) to give an overview of the chemical distribution. Then, a phytochemical screening (colorimetric methods) characterized the different chemical functional groups in all extracts studied. Antioxidant act...
S Mounguengui, J-B Tchinda Saha, M Kor Ndikontar, S Dumarçay, C Attéké, D Perrin, E Gelhaye,
Assessing the risk of marine borer attack of the timber trestles and decay of timber above the intertidal zone of the Barmouth Viaduct
2021 - IRG/WP 21-10974
The Barmouth Viaduct is a Grade II* listed structure which carries the single track of the Dovey Junction to Pwllheli line and footway over the Mawddach estuary. It is in a marine environment where timber below the high tide mark is at most risk in Use Class 5 and all timber above in Use Class 3.2, permanently exposed to the risk of wetting. The structure consists of a timber trestle viaduct of ...
J R Williams
Impregnation of wood with antifungal compounds from low-quality tree biomass
2022 - IRG/WP 22-30763
In this paper we have reviewed recent research on the development of bio-based preservative formulations for wood done at the Department of wood science and technology, Ljubljana. Preservative formulations used in this investigation were prepared using plant polyphenols as biocidal agents. These nonstructural components of wood were stilbenes and flavonoids, and were extracted from wood of broken ...
V Vek, I Poljanšek, A Balzano, M Humar, P Oven
Analytical retentions of active ingredients in H2F treated framing over a 12-year period
2023 - IRG/WP 23-20702
The H2F hazard class in Australia was developed to treat internal framing timber with a surface application of an insecticide, to control mainly termites. Two of the actives approved in AS 1604.1-2010 (and subsequent revisions) for this hazard class are bifenthrin and imidacloprid. The penetration zone of both actives is 0 – 2 mm from the wood surface.
Radiata pine sapwood framing timber wa...
A Siraa
Hydrothermal liquefaction of spent mushroom substrate as a source of antifungals
2023 - IRG/WP 23-30791
The aim of this study was to characterize the chemical composition of hydrothermal liquefaction (HTL) products from the spent mushroom substrate (SMS) of Agaricus bisporus (Lange) Imbach and Pleurotus ostreatus (jacq.) P. kumm. using high-resolution 1H nuclear magnetic resonance (NMR), and assess the antifungal properties of these thermal decomposition liquids against wood decaying fungi (Coniopho...
A Barbero-López, Y M López-Gómez, J Carrasco, N Jokinen, R Lappalainen, A Haapala