Plant extracts with herbicidal activity
AssigneeAgrematch Ltd.
InventorsOr BROSHI, Yaniv MIZRAHI, Yosef GEVA, Yael PHILLIP
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Abstract
Plant extracts enriched with Rhein and/or a glycosylated derivative thereof, which exhibit at least a herbicidal activity, processes of preparing same, and uses thereof, are provided.
Claims23
1-51. (canceled)
A plant extract comprising an aqueous extraction medium and at least one anthraquinone compound extracted from the plant, wherein at least 50%, or at least 70%, or at least 80% of a total amount of said at least one anthraquinone consist of Rhein and/or a glycosylated derivative thereof.
A process of preparing a plant extract that comprises at least one anthraquinone and an aqueous extraction medium, wherein at least 50%, or at least 70%, or at least 80% of a total amount of said at least one anthraquinone consist of Rhein and/or a glycosylated derivative thereof, the process comprising contacting a plant or a part thereof with said aqueous extraction medium, wherein:
- said contacting is with a root of Rheum palmatum with said aqueous extraction medium;
- and/or
- said extraction medium comprising a polar organic solvent which further comprises an amine.
Dependencies are inferred from the claim text.