Your search resulted in 158 documents. Displaying 25 entries per page.
Antifungal properties of metabolites produced by Trichoderma isolates from sawdust media of edible fungi against wood decay fungi
1994 - IRG/WP 94-10051
…medium of Pholiota nameko produced filtrates which had antifungal activities to four wood decay fungi tested on the agar plates. Filtrates produced from another isolate, from a sawdust medium of Lentinus edodes, had antifungal activities only to the white rot fungi, Coriolus versicolor and Pycnoporus coccineus.…
S Doi, M Mori
Antifungal activity in metabolites from Streptomyces rimosus
1991 - IRG/WP 1495
The objective of this study was to evaluate the efficacy of antifungal metabolites from Streptomyces rimosus for controlling the growth of sapwood-inhabiting fungi: sapstain fungi - Ceratocystis coerulescens, Ceratocystis minor, Ceratocystis pilifera, and Aureobasidum pullulans; mold fungi - Aspergillus niger,…
S C Croan, T L Highley
The antifungal efficacy of Guayule resin
1987 - IRG/WP 3429
The Naval Research Laboratory is evaluating the non-rubber-producing portion of guayule (Parthenium argentatum) resin as a protectant for wood in terrestrial and marine service. This study phase, in collaboration with the universities of Arizona and Mississipp…
J D Bultman, R L Gilbertson, T L Amburgey, J E Adaskaveg, S V Parikh, C A Bailey
Characterisation and evaluation of various chitosan oligomers, and decay resistance
2011 - IRG/WP 11-30562
…Aldrich and China (industrial grade). Subsequently their antifungal activies were evaluated using both agar nutrient medium and wood decay bioassays. The nutrient medium bioassay results showed that chitosan(s) and chitosan oligomers affected mycelial growth to different magnitudes. Nevertheless, two of the low-MW…
I Hussain, C Chittenden, T Singh
Discovering anti-fungal agents in New Zealand native plants for use in wood protection
2009 - IRG/WP 09-10692
…dentatus) leaves were tested in the laboratory for antifungal activity. In addition, the anatomical structure of the leaf was also examined by a combination of light and scanning electron microscopy. Chemical characterisation of the extracts and investigation into potential use of its components for wood…
C Rickard, T Singh, A Singh, R Newman
Methods for Determining the Role of Extractives in the Natural Durability of Western Redcedar Heartwood
2007 - IRG/WP 07-20356
…of extractives with high fungal toxicity, a micro-bioassay has been developed for measuring the fungal toxicity of extractive fractions. Two additional assays quantify the anti-radical and metal chelating properties of cedar extracts. Eight known WRC heartwood extractives were used to evaluate these methods.…
R Stirling, C R Daniels, J E Clark, P I Morris
Detection of Anti-Fungal Sapwood Extractives in Non-Durable Scots Pine (Pinus sylvestris), Rubberwood (Hevea brasiliensis) and Jelutong (Dyera costulata)
2007 - IRG/WP 07-10634
A general laboratory bioassay method of Woodward and Pearce (1985) was adopted to detect anti-fungal activity of sapwood or heartwood extractives of 5 Malaysian hardwoods [dark red meranti heartwood (Shorea spp.), red balau heartwood (Shorea spp.), kulim heartwood (Scorodocarpus…
A H H Wong, R B Pearce
Synthetic Oxalate/ß-glucan Fungal Extracellular Matrix Demonstrates Potential Inhibition of Extracellular Enzyme Diffusion into Wood Cell Walls, and Calls into Question the Role of Enzymes in Wood Decay
2025 - IRG/WP 25-11053
…to make fungi more susceptible to drug treatments with antifungal compounds in the medical realm. Discussion is provided on how wood treatment to alter the ECM could provide novel strategies for the development of new wood preservatives.
Portions of this research have previously been published in the Peer…
B Goodell, G A Tompsett, G Perez-Gonzalez, K Mastalerz, M Timko
Synergistic effect of the association of Prosopis juliflora polyphenolic extractives with tebuconazole on the growth inhibition of brown and white rot fungi: a solution to increase the naturality and safety of wood preservation treatment
2025 - IRG/WP 25-20732
The antifungal effect of catechin and extractives from Prosopis juliflora was studied against one white rot fungus, Trametes versicolor (TV), and one brown rot fungus, Rhodonia placenta (PP). The extractives from Prosopis julilfora were crude mesquitol and pure…
J Owino, J Tuimising, F Mangin, P Gérardin, A Kiprop, C Gérardin-Charbonnier
Are we barking up the right tree? - the use of bark residues in wood protection
2025 - IRG/WP 25-20742
…properties. Despite the eco-friendly benefits, such as antifungal and antioxidative properties, challenges like low extraction yields, poor fixation, and limited supply hinder their practical application. Recent advancements in alkaline extraction and chemical modifications show promise in enhancing bark-derived…
A Treu, M Altgen, M Sipponen, M Borrega
Evaluation of oak bark extracts as bio-based preservative agents in wood protection
2025 - IRG/WP 25-30833
…this study, selected bark extracts were explored for their antifungal activity against common wood-degrading fungi to assess their suitability for eco-friendly wood preservation strategies. Residual wet outer oak bark (Quercus robur) was dried, milled and subjected to three extractions methods: aqueous, organic…
R Herrera, A Selmanovic, F Poohphajai, C Peña, A Sandak
Bio-Based but Toxic? The Neglected Ecotoxicity of Leachates from Wood Preservatives—A mini-review
2025 - IRG/WP 25-50403
Bio-based Wood preservatives, derived from renewable biomass, are emerging as promising alternatives to traditional synthetic wood preservatives. Research groups all around the world are studying the development of bio-based – environmentally friendly – wo…
A Barbero-Lopez, A Haapala
A new wood preservative system based on basic copper compound nanosols
2024 - IRG/WP 24-20728
…copper-resistant fungi could be used as dispersants, and antifungal cationic surfactants or neutral azoles could be additionally added without affecting the dispersion stability of the nanosol. Various performance evaluations, including leaching characteristics, decay properties, termite control performance, and…
J O Kim, J-G Kang, Y-S Choi, S-M Yoon, H-M Lee, J-G Park
Structure bioactivity relationships of softwood knot extracts
2023 - IRG/WP 23-11026
Antibacterial, antifungal and radical scavenging activities of knots of three softwood species have been investigated to evaluate the role of higher amounts of extractives present in knots. The results showed than Douglas fir presented higher scavenging activity than fir…
P Gérardin, P Gérardin, D Hentges, S Dumarçay, C Audouin, C Gérardin-Charbonnier
Evaluation of the effectiveness of soaking of high-temperature plywood in low-temperature oil-based wood
2023 - IRG/WP 23-40991
…in the retention of all layers, including the inner layer. Antifungal performance was evaluated using a sand-block laboratory test with Fomitopsis palustris and Trametes versicolor. It was confirmed that sufficient antifungal performance could be achieved by soaking the specimens in a state above a certain…
T Miyauchi, S Isaji, H Shibui, N Furuta, J Miyazaki, H Matusnaga
Efficiency of three resin fractions from Aucoumea Klaineana Pierre, Canarium schweinfurthii Engl and Dacryodes edulis (G. Don) H. J. Lam from Gabon combined with Tebuconazole as wood preservatives
2022 - IRG/WP 22-10998
…oils were combined with tebuconazole to produce both antifungal and anti-termite wood preservatives formulations. Beech and scots pine wood block samples were impregnated by these different formulations and expose to Trametes versicolor and Coniophora puteana, respectively. Treated and control scots pine…
W F Bedounguindzi, K Candelier, P Edou Engonga, S Dumarcay, M-F Thevenon, P Gerardin
A new approach to wood protection: Potential of biologically synthesised CuO and ZnO nanoparticle formulation as a wood preservative
2022 - IRG/WP 22-30758
Even though metal nanoparticles are effective in protecting wood, they are less preferred, as they are synthesised using methods which are expensive and are not environmentally friendly. Biological synthesis of nanoparticles using plants, fungi, yeast, bacteri…
Shiny K S, R Sundararaj, N Mamatha
Wood Protection Using Nano Metal Oxides in Propylene Glycol
2022 - IRG/WP 22-30760
…complete settling of CuO nanoparticles was not observed. Antifungal assay as plate test show that 0.01 to 0.05% of nanoparticle dispersions can prevent white-rot and brown-rot fungal growth. Fungal resistance tests using nanodispersion treated wood specimens shows that nano-ZnO dispersion in propylene glycol…
S Nair, G B Nagarajappa, K K Pandey
Comparative study on the efficacy of biobased wood preservative over conventional wood preservatives against fungi and termites
2022 - IRG/WP 22-30761
…as per Bureau of Indian Standards (BIS) in terms of its antifungal (IS 4873, Part I:2008) and termiticidal activities (IS 4833:1993) through accelerated termite graveyard test and fungal resistance test. The level of impregnation of liquefied wood in wood was estimated by determining the weight percent gain. In…
A Kumar, A John, B N Hazarika
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…coating 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…
K Kurkowiak, L Emmerich, H Militz
Chemical composition and performances of slow pyrolysis by-product from sugarcane bagasse for wood protection
2020 - IRG/WP 20-30752
Pyrolysis distillate or bio-oil, a by-product of biomasses’ slow pyrolysis in the char-making process, has been traditionally used as bio-pesticides by Asian farmers. Due to its large composition of bio-active chemicals, bio-oil obtained from various biomass…
F D Boer, M-F Thévenon, J-M Commandre, M Fournier
Chemical defense of trees and wood natural durability: from protection to valorization
2019 - IRG/WP 19-10943
…woods against fungi, to eventually isolate and identify antifungal compounds that could be used for the treatment of human fungal diseases, in the context of a bio-inspired approach. Lastly, we will show that the use of wood residues obtained from naturally durable trees transformed by the timber industry can be a…
E Houel, D Stien, N Amusant
Coula edulis baill an unknown wood species as an alternative to the main durable wood species used in Gabon
2019 - IRG/WP 19-10945
The Congo Basin hosts an exceptional biodiversity of trees, flora and fauna. However, the immense natural heritage of the forests in this area is increasingly threatened by many anthropogenic factors, due to selective exploitation of certain wood species. In G…
C S A Bopenga Bopenga, S Dumarçay, P Edou Engonga, P Gerardin
Liquefied wood polyols: a bio-based preservative for protection of wood from fungal decay
2018 - IRG/WP 18-30725
…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 effects on growth of fungus and is similar infested as to control samples.
The…
A Kumar, G Vijaylakshmi, S Singh Chauhan
Natural durability of Sextonia rubra, an Amazonian tree species: description and origin
2017 - IRG/WP 17-10887
…isolated from the heartwood of S. rubra, exhibit potent antifungal and termiticidal activities that result in the exceptional natural durability of this species heartwood. Interestingly, we have also described and isolated acylated precursors of these two secondary metabolites from the sapwood. Although the…
E Houël, A Rodrigues, E Nicolini, O Ngwete, C Duplais, D Stien, N Amusant