Process for producing an antioxidant extract from the bearberry plant
AssigneeUniversity of Saskatchewan Technologies Inc.
InventorsRonald Bruce Pegg, Branka Barl, Ryszard Amarowicz
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Abstract
An antioxidant extracted from the bearberry plant (Arctostaphylos uva-ursi), particularly for use as a food preservative, and a process of extracting it from the bearberry plant are disclosed. The process includes grinding the leaves of the bearberry, mixing the ground leaves with ethanol, shaking the resulting slurry, filtering the slurry, evaporating the supernatant to dryness and dechlorophyllyzing the resulting precipitate using a silicic acid column with hexane as the mobile phase and recovering the dechlorophyllyzed extract using ethanol as the mobile phase.
Claims8
A process for producing a plant extract for use as an antioxidant, comprising the steps of:
- extacting an intermediate extract from plant tissue obtained from the bearberry plant (Arctostaphylos uva-ursi) with a solvent containing at least approximately 95% ethanol by volume;
- loading the intermediate extract on a chromatographic column, comprising silicic acid;
- and
- eluting chlorophyll from the column with a mobile phase comprising hexane.
Dependencies are inferred from the claim text.