Equol-containing extract, method for production thereof, method for extraction of equol, and equol-containing food

摘要

The present invention relates to an extract obtained by extracting useful components containing equol from an equol-containing fermented soybean hypocotyl, and to a method for producing the same.;The present invention makes it possible to efficiently obtain useful components containing equol from the fermented soybean hypocotyl by subjecting an equol-containing fermented soybean hypocotyl to extraction using an ethanol aqueous solution as an extractant. The present invention reduces the content of saponin, which causes an unpleasant taste, by sequentially subjecting the equol-containing fermented soybean hypocotyl to extraction using an ethanol aqueous solution and ethanol, while efficiently extracting equol and glycitein.

主权项

1. A method for producing an equol-containing extract from equol-containing fermented soybean, comprising Steps II-1 and II-2:
Step II-1 of suspending the equol-containing fermented soybean in water, adding acid in such a manner that the resulting aqueous solution has a pH of 2 to 6, and collecting insoluble residue; and Step II-2 of subjecting the insoluble residue obtained in the Step II-1 to extraction using an ethanol aqueous ethanol solution containing between 70-90% ethanol as an extractant, and then collecting the resulting liquid extract.