Studies on the resistance of DMDHEU treated wood against white-rot and brown-rot fungi. Verma, P., Mai, C., Krause, A., & Militz, H. In pages 15, April, 2005.
doi  abstract   bibtex   
Beech wood (Fagus sylvatica) modified with the textile finishing agent 1,3 dimethylol-4,5-dihydroxyethylen urea (DMDHEU) has shown to improve durability against the white-rot fungus Trametes versicolor. In a mini-block test, the weight loss over eight weeks of incubation decreased with increasing weight percent gain (WPG) of DMDHEU. At 25% WPG, no significant weight loss was observed, while untreated beech wood lost 37% of its initial weight under the same conditions. This increase in resistance was shown not to be caused by a biocidal effect of monomeric DMDHEU: the growth of T. versicolor and Coniophora puteana was not significantly reduced, when DMDHEU was added to sterile malt agar plates in concentrations of up to 10%. Poria placenta was not negatively affected up to a DMDHEU concentration of 5%. A solid state fermentation experiment was performed with T. versicolor on milled untreated and DMDHEU modified wood in order to determine the production of extra-cellular protein and the activity of wood-decaying enzymes. T. versicolor was not able to grow on wood treated to the highest WPG (14.9%). The activity of ligninolytic enzymes (laccase, manganese peroxidase) was highest at 7.9% WPG compared to the untreated control and 2.8% WPG. The overall production of hydrolytic enzymes was low in all cases and a clear distinction between untreated and modified wood was not possible.
@inproceedings{verma_studies_2005,
	title = {Studies on the resistance of {DMDHEU} treated wood against white-rot and brown-rot fungi},
	doi = {IRG/WP 05-10566},
	abstract = {Beech wood (Fagus sylvatica) modified with the textile finishing agent 1,3 dimethylol-4,5-dihydroxyethylen urea (DMDHEU) has shown to improve durability against the white-rot fungus Trametes versicolor. In a mini-block test, the weight loss over eight weeks of incubation decreased with increasing weight percent gain (WPG) of DMDHEU. At 25\% WPG, no significant weight loss was observed, while untreated beech wood lost 37\% of its initial weight under the same conditions. This increase in resistance was shown not to be caused by a biocidal effect of monomeric DMDHEU: the growth of T. versicolor and Coniophora puteana was not significantly reduced, when DMDHEU was added to sterile malt agar plates in concentrations of up to 10\%. Poria placenta was not negatively affected up to a DMDHEU concentration of 5\%. A solid state fermentation experiment was performed with T. versicolor on milled untreated and DMDHEU modified wood in order to determine the production of extra-cellular protein and the activity of wood-decaying enzymes. T. versicolor was not able to grow on wood treated to the highest WPG (14.9\%). The activity of ligninolytic enzymes (laccase, manganese peroxidase) was highest at 7.9\% WPG compared to the untreated control and 2.8\% WPG. The overall production of hydrolytic enzymes was low in all cases and a clear distinction between untreated and modified wood was not possible.},
	author = {Verma, P. and Mai, C. and Krause, A. and Militz, H.},
	month = apr,
	year = {2005},
	keywords = {1, 3-dimethylol-4, 5-dihydroxyethylen urea (DMDHEU), enzyme production, mode of action, wood modification},
	pages = {15},
	file = {IRG 05-10566:C\:\\Users\\Eva\\Zotero\\storage\\3IZCAWV4\\IRG 05-10566.pdf:application/pdf},
}
Downloads: 0
About
Documentation
Keywords
Search
Users
Terms and Conditions of Use
Privacy Policy
Sitemap
© BibBase.org 2021