Patent ID: 9572849
Date: 2017-02-21
CPC Classifications: A61K

Claim:
1. A method for obtaining one or more substances from plant material, comprising: (a) providing post-distillation plant material from which essential oils have been removed by water or steam distillation; (b) contacting the post-distillation plant material with a first solvent under conditions permitting extraction of at least one of the one or more substances from the plant material into the first solvent, wherein the first solvent is a polar solvent, thereby producing a first extract and a polar solvent-extracted plant material; (c) separating the first extract from the polar solvent-extracted plant material; (d) contacting the polar solvent-extracted plant material with a second solvent, which is different from the first solvent, under conditions permitting extraction of at least another one of the one or more substances from the polar solvent-extracted plant material into the second solvent, thereby producing a second extract; and (e) obtaining the one or more substances from the first extract or the second extract, or from the first extract and the second extract.