Termite-repellent wood extractives

Contribution of Extractives to Fungal and Termite Resistance of Brazilian Wood Bagassa guianensis AUBL

The heartwood of Bagassa guianensis AUBL., which grows widely in South America, is empirically known to be durable against fungal and insects decay. In this study, we evaluated the fungal and termite resistance of B. guianensis wood, and conducted the separation of substances having the antifungal and antitermite properties. As the results, B. guianensis wood has excellent durability against bo...

Chemical extractives of the tropical wood

1 Wallaba (Eperua falcata) is a tropical wood which is known to have naturally low swelling 2 characteristics. Samples of wallaba heartwood were subjected to differential solvent 3 extraction. Wood pieces that were extracted with methanol experienced significantly higher 4 swelling after rehydration from oven dry to 96% relative humidity in comparison to non-5 extracted samples and samples extr...

Phenolic Extractives and Natural Resistance of Wood

Termite Attractant from Fungus-Infected Wood.

Field observations suggested that subterranean termites might follow a concentration gradient of attractive material to find decaying wood. Laboratory cultures of the brown rot fungus, Lenzites trabea Pers. ex. Fr., on pine blocks formed a material attractive to the eastern subterranean termites, Reticulitermes flavipes (Kol.) and R. virginicus Banks, and a Costa Rican termite, Nasutitermes col...

Investigation of Interaction between Wood-extractives and Metal Ions