Improvement of fungicidal properties and copper fixation of copper-ethanolamine wood preservatives using octanoic acid and boron compounds

Humar, Miha; Žlindra, Daniel; Pohleven, Franc

doi:10.1007/s00107-006-0118-8

Cited by 18 publications

(9 citation statements)

References 6 publications

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“…Moreover, 92% of the WPs decayed by SR were installed before the 1990s and strong decay was not detectable. Accordingly, the WP susceptibility to BR fungi is strongly related to the application of recent wood preservative formulations without an effective co-biocide and only with a weak fixation of Cu in the wood (Humar et al 2007). The finding in the present paper confirms the early observations of Leithoff et al (1995), who demonstrated in a choice test the preference of Antrodia spp.…”

Section: Determination Of Wood Preservatives and Decay Types In Utilisupporting

confidence: 90%

Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes

et al. 2016

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In contact with soil, copper (Cu) formulations as preservatives are expected to inhibit wood decay by fungi and other soil-borne microorganisms. However, Cu-resistant brown-rot (BR) fungi lead to premature failures of utility poles at some sites. In this study, the service lives of 111 utility poles of Norway spruce (Picea abies (L.) H. Karst) (73 from Switzerland and 38 from Germany) impregnated with Cu-based wood preservatives were investigated. Three segments of each utility pole were analyzed. The severity of decay was dependent on the preservative formulation. BR fungi and in particular Antrodia species were predominantly isolated from utility poles that were not treated with a co-biocide, e.g. boron (B). Cu-sensitivity of several isolated BR fungi was confirmed in studies on Cu-amended medium and in Cu-treated wood. Isolates of Fibroporia vaillantii and Serpula himantioides showed a higher Cu-tolerance than the highly Cu-tolerant Empa isolate Rhodonia placenta (Empa 45) or Antrodia serialis.

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Section: Determination Of Wood Preservatives and Decay Types In Utilisupporting

confidence: 90%

Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes

et al. 2016

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“…Many studies have reported that Poria placenta mycelium penetrates inside wood cells and causes enormous impact and thus has a higher fungal activity morphology of the mycelium. Novel inorganic aluminum borate and nano metal compounds could improve the antifungal performance of wood, which is in agreement with previous studies [21,22]. Therefore, aluminum sulfate (Al 2 (SO 4 ) 3 ), boric acid (H 3 BO 3 ) and the amphiprotic surfactant are considered non-toxic, and also has relatively very low-risk to animals and is non-toxic for humans to significantly improve wood against white-rot fungi and termites, including being low-cost and renewable [23].…”

Section: Introductionsupporting

confidence: 93%

Influence of Mesoporous Inorganic Al–B–P Amphiprotic Surfactant Material Resistances of Wood against Brown and White-Rot Fungi (Part 1)

Beaudelaire¹,

Zhuang²,

Aladejana³

et al. 2020

Coatings

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This study describes the application of aluminum sulfate Al2(SO4)3, boric acid H3BO3, phosphoric acid H3PO4 (Al–B–P) and amphiprotic surfactant material synthesis by the sol-gel process, which were adopted as novel precursors for wood modification. The efficacy of Al–B–P-treated wood was tested against Poria placenta and Coriolus versicolor. Untreated wood samples had higher mass losses (>40%) compared to the treated sample, which had the lowest wood mass losses (of 4%) against P. placenta and C. versicolor. To analyze the reaction mechanism of Al–B–P wood, the mechanical properties, chemical structure, crystallinity, thermal analysis, binding energy and wettability was examined by modulus of rupture (MOR), modulus of elasticity (MOE), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Thermogravimetric analysis (TG) and X-ray photoelectron spectroscopy (XPS), respectively. Scanning electron microscopy- energy-dispersive X-ray spectroscopy (SEM-EDS) confirmed the wood colonization by fungi, and was used to identify the microstructures and morphologies changes that occurred in the cells during degradation by white and brown-rot fungi. At the same time, X-ray photoelectron spectroscopy (XPS) was employed to analyze the physical and chemical properties of the samples. Therefore, the study confirmed that Al–B–P and amphiprotic surfactant could replace the traditional wood preservative products, and have the potential to extend the service life of wood, particularly in soil contact and outdoor usage.

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“…The boronbased preservatives are generally not as hard on the environment as copper-based preservatives (Lebow 2004;Przewloka 2004;Humar et al 2007). Due to the newness of the BS solution, a preservative only in use recently in the preserved wood market in Chile (Navarrete 2004), these are the first results described in the literature that show the effect of this new formulation on growth in solid medium of a variety of native and commercial strains of wood-rot fungi, using the impregnated disk test.…”

Section: Discussionmentioning

confidence: 99%

Tolerance to wood preservatives by copper-tolerant wood-rot fungi native to south-central Chile

2008

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Understanding the effect of heavy metals and wood preservatives on the growth of wood-rot fungi native to a certain region may improve reliability in determining the effectiveness of antifungal products, particularly when dealing with new formulations. In this investigation, strains of copper-tolerant wood-rot fungi native to south-central Chile were evaluated against two preservatives: commercial chromated copper arsenate type C (CCA-C) and a new formulation with boron and silicon (BS). Thirteen native strains, mainly white-rot fungi, were selected for their high growth rates in solid medium containing 3 mM of copper. A short-term test was then carried out, consisting of adding cellulose disks impregnated with different concentrations of preservatives to solid culture media inoculated with selected copper tolerant strains. There was a great variability in interspecific and intraspecific responses to the presence of copper and preservatives in culture media. Among the native and commercial strains evaluated, the white-rot fungi Trametes versicolor 38 and mainly Ganoderma australe 100 were notable for their tolerance to all the CCA-C and BS concentrations. The brown-rot fungus Wolfiporia cocos, used as reference strain, showed a high tolerance to CCA-C, but not to BS preservative. T. versicolor 38 and G. australe 100 were selected for subsequent studies on preserved wood degradation.

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Improvement of fungicidal properties and copper fixation of copper-ethanolamine wood preservatives using octanoic acid and boron compounds

Cited by 18 publications

References 6 publications

Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes

Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes

Influence of Mesoporous Inorganic Al–B–P Amphiprotic Surfactant Material Resistances of Wood against Brown and White-Rot Fungi (Part 1)

Tolerance to wood preservatives by copper-tolerant wood-rot fungi native to south-central Chile

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