Herbicidal and bacteriostatic compounds from centaurea maculosa

Details Herbicidal and bacteriostatic compounds from centaurea maculosa Herbicidal and bacteriostatic compounds from centaurea maculosa

A - Human Necessities

01

N

A01N 43/16 (2006.01) A01N 65/00 (2006.01)

Patent

CA 2460540

The present invention provides environmentally friendly herbicidal and bacteriostactic compositions based on exudates of the invasive Centaurea maculosa (spotted knapweed). The active components are the two enantiomers of the flavonol catechin. The (-) enantiomer is used as a broad spectrum herbicide while the (+) enantiomer is used for its bactericidal and bacteriostatic activities against soil borne bacteria. Methods of isolating and using the catchin-containing compounds are also disclosed.

La présente invention concerne des compositions herbicides et bactériostatiques écologiques à base d'exsudats de Centaurea maculosa envahissante (centaurée maculée). Les composants actifs sont les deux énantiomères de la flavonol catéchine. L'énantiomère (-) sert d'herbicide à large spectre, tandis que l'énantiomère (+) est utilisé pour son action bactéricide et bactériostatique contre les bactéries telluriques. L'invention a également trait à des procédés d'isolation et d'utilisation des composés contenant de la catéchine.

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