PROCESS FOR OBTAINING GENISTIN MALONATE AND DAIDZIN MALONATE

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专利权人:

NESTEC S.A.

发明人:

FLEURY, YVETTE,MAGNOLATO, DANIELE

申请号：

US19900598247

公开号：

US5141746(A)

申请日:

1990.10.16

申请国别(地区):

美国

年份:

1992

代理人:

摘要：

Genistin and daidzin malonates are obtained by extracting ground soya bean with methanol or ethanol to obtain an extract. The extract is buffered to a pH of 6 to 9 and then extracted with a water-immiscible solvent. The aqueous phase is recovered, acidified to a pH of 2 to 5.4, and then extracted with a water-immiscible solvent. The organic phase is recovered, neutralized to a pH of 6.8 to 7.2, and the malonates are separated therefrom.

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