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White-rot fungal decay resistance of Teak and Melina wood treated with acetic anhydride

Author:
Pardo, Tatiana, Alfaro, Johnny
Source:
International Biodeterioration & Biodegradation 2014 v.88 pp. 44-47
ISSN:
0964-8305
Subject:
Coriolus versicolor, Gmelina arborea, Tectona grandis, acetic anhydride, decay resistance, hardwood, white-rot fungi
Abstract:
The resistance against white-rot fungus Trametes versicolor was studied for chemically modified samples of hardwood tropical species Teak (Tectona grandis) and Melina (Gmelina arborea), which were treated with acetic anhydride for three different reaction times. Acetylated samples with different weight percent gain (WPG) and untreated solid blocks were exposed to the fungus for ninety days. The weight percent loss (WPL) due to the fungal attack was determined for each treatment, for both treated and untreated samples. It was found that treated Teak samples have good protection against fungal attack, but WPG does not affect significantly this protection. For Melina it was found that at higher values of WPG, a higher protection is achieved.
Agid:
5470251