| abstract |
(57) [Problem] To provide a method for producing an isoflavone compound, particularly isoflavone aglycone, with a high yield. SOLUTION: (1) Solvent extraction of a raw material containing an isoflavone compound using a hydrophilic organic solvent, and (2) liquid-liquid separation of a hydrophilic organic solution obtained by extraction using a hydrophobic organic solvent, (3) The hydrophilic organic solution obtained by liquid-liquid separation is subjected to liquid-liquid separation using a hydrophobic organic solvent, and (4) if necessary, the hydrophobic organic solution obtained by liquid-liquid separation is concentrated or A method for producing an isoflavone compound represented by the following formula (II), comprising drying: Embedded image [Wherein, R 1 represents a glycoside group, a hydroxyl group, or an alkoxyl group, R 2 represents a hydrogen atom, a hydroxyl group, or an alkoxyl group, and R 3 represents Represents a hydrogen atom, a hydroxyl group, or an alkoxyl group] |