Your search resulted in 264 documents. Displaying 25 entries per page.
Antifungal mechanism of dichloro-N-octylisothiazolone
1998 - IRG/WP 98-30183
…potent rapid-acting preservative with a broad spectrum of antifungal and antibacterial activity that is effective at low levels.
J S Chapman, M A Diehl, K B Fearnside, L E Leightley
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
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
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
Chemical defense of trees and wood natural durability: from protection to valorization
2019 - IRG/WP 19-10943
…EN 350-1). This property is due in particular to heartwood extractives. However, the wood natural durability is included in a wider defense system, and other organs such as bark and roots also host protective compounds. Studying the mechanisms on which global chemical defense relies can give insights into the tree…
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
…tests carried out with different concentrations of extractives confirmed their important fungicidal effects. Percentage of the different wood polymers and chemical composition of wood extractives were evaluated to find correlation between durability and wood chemistry. Results indicated that natural…
C S A Bopenga Bopenga, S Dumarçay, P Edou Engonga, P Gerardin
Anti-Fungal Activity on Some Wood extracts as a Wood Protectant
2016 - IRG/WP 16-30684
…blended with potato-agar in order to investigate their antifungal properties. To determine the inhibition effectiveness of extractives, two different fungi; Coniophera puteana and Trametes versicolor were selected. Fungal activity was carefully observed for the duration of seven days. Following biological…
Ö Özgenç, S Durmaz
Wood properties modification by an enzymatic assisted treatment with phenolic extractives
2016 - IRG/WP 16-30696
Extractives of sawdust and bark from P. pinaster and, condensed tannins (CTs) from P. radiata bark were used to treat beech and pine veneers in combination with an oxidative enzyme, in order to stably graft such extractives onto the veneers. First, the…
D Filgueira, C Fernández-Costas, D E García, D Moldes
Chemical composition of extractives of different wood compartments of Pinus merkusii and their potential implication in wood durability
2015 - IRG/WP 15-10841
Amounts and nature of extractives differ strongly according to the compartment of wood and to the nature of the wood species. Previous studies reported that knotwood of several European Pinus sp. contains extractives contents much higher than stemwood consisting mainly of lignans…
A Wijayanto, S Dumarçay, R Kartika Sari, W Syafii, P Gérardin, C Gérardin-Charbonnier
Unexpected natural decay resistance strategies of durable tropical woods Bocoa prouacencis, Vouacapoua americana, Inga alba and relationship with specific gravity and wood extractives
2014 - IRG/WP 14-10832
…highly resistant due to the high specific gravity and the antifungal wood extractive. In Vouacapoua americana heartwood, decay resistance was due to the high synergistic-acting wood extractive content. Conversely, with the least dense wood species Inga alba, we found that decay resistance was due to the antifungal…
N Amusant, M Migg, B Thibaut, J Beauchene
The effects of impregnation with secondary metabolite extracted from Ipe on durability of Japanese cedar and beech wood
2013 - IRG/WP 13-30618
…extracted by a Soxhlet extraction method showed antifungal properties. Therefore, to establish a simpler and more economical extraction method, we investigated extraction by soaking with a solvent. Then, non-durable wood specimens were impregnated with extractives and examined by accelerated fungal tests.…
T Iida, R Konuma, K Kawarada
Antinomic natural self-protection mechanism in long-lasting woods: a case study with three tropical species from French Guiana
2009 - IRG/WP 09-10696
…Wallaba impregnates its wood with large amounts of weakly antifungal compounds acting in synergy, while tatajuba and louro vermelho woods are naturally impregnated with antifungal agents. Comparison of biological activities in vitro and concentrations in the woods indicate that these compounds alone may account for…
A Rodrigues, M Royer, N Amusant, J Beauchêne, G Herbette, V Eparvier, A Thibaut, L Salmen Espíndola, B Thibaut, D Stien
Methods for Determining the Role of Extractives in the Natural Durability of Western Redcedar Heartwood
2007 - IRG/WP 07-20356
…redcedar heartwood is influenced by a number of different extractives operating by different mechanisms. In order to guide a systematic isolation 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…
R Stirling, C R Daniels, J E Clark, P I Morris
Potentiality of use extracts from Tetraclinis articulata like biocide against wood destroying organisms: Reticulitermes santonensis
2007 - IRG/WP 07-30418
…trials were conducted to determine the antitermitic and antifungal properties of essential oil and methanolic extractives obtained from Tetraclinis articulata heartwood. Extract-treated cellulose pads were used to evaluate antitermitic activity and complete termite mortality was obtained with the essential oil:…
F El hanbali, N Amusant, F Mellouki, M Akssira, C Baudasse
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
…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 borneensis), jelutong sapwood (Dyera costulata) and rubberwood sapwood (Hevea brasiliensis), including the…
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
Multifactorial analysis of the reasons behind wood natural durability
2025 - IRG/WP 25-11065
…different lignin monomers like syringyl/guaiacyl ratio. Extractives contents were obtained after Soxhlet extraction with four solvents of increasing polarities: dichloromethane, acetone, toluene/ethanol (2/1, v/v) and water. Decay durability of the different wood species studied was carried out on extracted and…
L-F E Nkogo, M S M Mouendou, S Dumarçay, P E Engonga, F Zannini, E Gelhaye, P Gérardin
Durability and molecular analysis of fungal communities in wood exposed above ground
2025 - IRG/WP 25-11068
…esters, epoxidized linseed oil (ELO)-modified, citrus extractives and thermally modified wood) were accessed according to the standard ENV 12037. Molecular methods were employed to identify the variety of fungi in the wood.
Siberian larch showed better performance compared to the species grown in Sweden after…
N Högberg, D Panov, G Daniel, N Terziev
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
Evaluation of moisture exclusion ability of wood using double-layer outdoor exposure tests
2025 - IRG/WP 25-41021
…to decay must be due to the combined effects of heartwood extractives and the moisture content state. Evaluating the moisture exclusion ability of wood is important for assessing its durability in outdoor use. We conducted previously double-layer outdoor exposure tests and investigated the relationship between…
T Osawa, R Noda, K Yamamoto
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
Valorisation of bark extractives for wood and plant protection: the Extrabark project
2025 - IRG/WP 25-50415
The Extrabark project is an Interreg collaborative project between Lorraine in France, Wallonia in Belgium, the Saarland in Germany and Luxembourg. The objectives of the project are to develop a complete value chain of valorisation of bark generated by wood in…
P Gérardin, C Gérardin-Charbonnier, S Dumarçay, F Obounou Akong, E Fredon, R Martha, J V Dorini Falavinha, W Donck, Z Nys, A Lepretre, L Taguimjeu, M-L Fauconnier, J Renaut, K Sergeant, S Saker, E Strilin, J Tchoumtchoua, M C Detroz, G Beauchamp
Characterization of cell wall morphology and water-soluble extractives in Japanese larch decayed by white-pocket-rot fungi
2024 - IRG/WP 24-11034
…the changes in the cell wall morphology, water-soluble extractives such as arabinogalactan, and cell wall chemical components of Japanese larch decayed by P. chrysoloma in the natural environment. P. chrysoloma caused a distinct decay pattern characterized by white-pocket-rot in Japanese larch heartwood. The…
Y Mori, H Arai, T Ito, H Hashitani, K Yamashita, Y Ota, M Kiguchi