Method for the extraction of flavanones and chalcones from hops or hop products

摘要

the invention describes a way to discriminate flawanonu00f3w and their chalkonu00f3w with hops or hop products by solvent extraction with that comprises steps: (a) extraction and solvent niemieszaju0105cym with water or with limited mieszalnou015bci with water, (b) purification of extract and the two-phase liquid liquid(c) the extraction of the aqueous alkali metal hydroxide solution ii products, (d) to knock down the crystalline product after acidifying the aqueous phase (extract ii) obtained in stage c).