COMPOSITION CONTAINING ISOFLAVONE OF HIGH PURITY AT HIGH CONCENTRATION AND PROCESS FOR PRODUCING THE SAME

摘要

It is intended to provide a composition containing isoflavone which has a high purity in a natural state and yet is highly soluble in water without adding any solubilizers or subjecting to chemically modification. It is found out that a composition containing isoflavone with a high purity and a high solubility in water can be obtained by extracting soybean hypocotyl with a water-containing alcohol within a specific temperature range, then allowing a synthetic adsorbent resin to adsorb the obtained extract and eluting with a water-containing alcohol at a specific concentration.