Method of producing enriched flavonoid aglycone concentrates from plant material using aqueous solvents

摘要

A method of producing a flavonoid aglycone concentrate from plant material containing a suitable flavonoid glycoside and/or conjugate thereof is described, comprising the steps of: (i) disrupting the cellular structure of the plant material; (ii) permitting enzymatic conversion in the disrupted plant material of the flavonoid glycoside or conjugate thereof into the flavonoid aglycone wherein the enzymatic conversion is effected primarily by endogenous enzymes; and (iii) adjusting the pH to render the flavonoid aglycone relatively insoluble and forming a concentrate containing the same.