Patent ID: 6824797
Filing Date: 2004-11-30
Classification: A23L,A23V,C07H

Abstract:
A method of obtaining a purified extract comprising polyphenolic compounds from a plant comprising polyphenolic compounds, the method comprising:extracting a plant material in order to obtain a raw plant material extract comprising polyphenolic compounds, wherein extracting comprises: (a) heating the plant material: and (b) submitting the plant material of step (a) to a vacuum: adsorbing the polyphenolic compounds contained in the extract on an adsorbing styrene-divinyl benzene resin that has a high adsorption performance and a high elution performance; eluting the polyphenolic compounds from the resin to obtain a purified extract comprising the polyphenolic compounds, and concentrating the purified extract; wherein the resin is further defined as having pores with an average size in the range from 50 to 110 angstroms, a surface area equal to or higher than 800 m2/g and a pore volume higher than 1 ml/g; and the plant material is all or part of a leafy plant of the Compositae family or a bulb plant of the Liliaceae family.