| abstract |
The present invention relates to, for example, a method of producing a xanthohumol-containing composition, including: contacting a first mixture of a hop-derived, xanthohumol-containing component and a first solvent containing water and a water-miscible solvent with polyvinylpolypyrrolidone to adsorb xanthohumol on the polyvinylpolypyrrolidone; washing the polyvinylpolypyrrolidone containing xanthohumol adsorbed thereon with a second solvent; and eluting xanthohumol from the polyvinylpolypyrrolidone with a third solvent to obtain a xanthohumol-containing eluate, wherein the second solvent is an aqueous ethanol solution, and the third solvent is ethanol or an aqueous ethanol solution having a higher concentration than the second solvent. |