SOYBEAN SAPONIN-CONTAINING MATERIAL AND PROCESS FOR PRODUCING THE SAME

摘要

It is intended to easily separate saponin from isoflavones extracted from starting soybeans thereby giving highly pure saponin at a high yield on an industrial scale. Saponin can be highly efficiently separated from isoflavones by performing multistage extraction under mild conditions such that malonyl isoflavone glycoside, from among isoflavones contained in the starting soybeans, is not converted into isoflavone glycoside, acetyl isoflavone glycoside or isoflavone aglycon. Thus, highly pure saponin can be obtained at a high yield on an industrial scale.