Vetiver oil extracts as termite repellent and toxicant

Details Vetiver oil extracts as termite repellent and toxicant Vetiver oil extracts as termite repellent and toxicant

A - Human Necessities

01

N

A01N 35/06 (2006.01) A01N 45/02 (2006.01) A01P 7/04 (2006.01) A01P 17/00 (2006.01)

Patent

CA 2423950

Extracts of vetiver oil were found to significantly repel termites. In one extract, nootkatone was isolated and found to be a significant repellent and toxicant of termites. Nootkatone significantly decreased food consumption, decreased tunneling behavior, and increased mortality in termites. Nootkatone is an effective repellent and toxicant of termites either by itself or as an addition to other materials or substrates, including mulches made from vetiver grass roots or other wood products. Nootkatone can also be used to protect construction wood from attack by Formosan subterranean termites. Nootkatone as a repellent is non-toxic to humans and other mammals and is environmentally safe. In addition, .alpha.-cedrene was found to be a weak termite repellent; and both zizanol and bicyclovetivenol were found to be repellents and toxicants of termites.

Des extraits d'essence de vétiver se sont avérés repousser de manière significative les termites. Dans un extrait, une nootkatone a permis de réduire de manière significative la consommation alimentaire, le comportement de minage, et d'augmenter la mortalité des termites. La nootkatone est un répulsif et un toxique efficace des termites soit seule soit sous la forme d'une addition à d'autres matières ou substrats, notamment des paillis produits à partir de racines de graminacées de vétiver ou d'autres produits alimentaires. La nootkatone peut aussi être utilisée pour protéger le bois de construction contre une attaque par des termites souterrains Formosan. La nootkatone en tant que répulsif est non toxique pour l'homme et pour d'autres mammifères et ne présente pas de danger pour l'environnement. De plus, on a découvert que l'.alpha.-cédrène est un répulsif faible des termites; et l'on a découvert qu'à la fois le zizanol et le bicyclovétivénol sont des répulsifs et des agents toxiques des termites.

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