Process for treatment of anthocyane extracts

摘要

A method of treatment of an anthocyanic extract, characterized in that it mainly comprises an ultrafiltration stage which consists in separating from said extract by ultrafiltration, on the one hand a liquid filtrate which passes through an ultrafilter membrane and on the other hand a first concentrate containing more condensed forms of anthocyanins, and a reverse osmosis stage which consists in separating from said filtrate by reverse osmosis, on the one hand a diffusate which passes through a reverse osmosis membrane and on the other hand a second concentrate which contains less condensed forms of anthocyanins.