Patent ID: 8993749
Filing Date: 2015-03-31
Classification: A61K,A61P,A61Q,C07H

Abstract:
1. A process for producing an eriocitrin-containing material, comprising the steps of: preparing an eriocitrin-containing citrus extract from a citrus fruit using an extractant; and separating eriocitrin from the citrus extract, wherein the step of separating eriocitrin from the citrus extract comprises the steps of: bringing the citrus extract into contact with a porous synthetic adsorption resin such that eriocitrin in the citrus extract is adsorbed on the porous synthetic adsorption resin, the porous synthetic adsorption resin comprising a phenol-formaldehyde resin as a main framework and having amino and phenolic hydroxyl groups; and eluting the eriocitrin adsorbed on the porous synthetic adsorption resin using an elution solvent to obtain an eluate containing the eriocitrin, wherein the elution solvent is hydrous ethanol having an ethanol concentration of 60-80% by volume.