METHOD FOR OBTAINING PURIFIED HYDROXYTYROSOL FROM PRODUCTS AND BY-PRODUCTS DERIVED FROM THE OLIVE TREE

摘要

The present addendum certificate relates to a method for obtaining purified hydroxytyrosol from products and by-products derived from the olive tree by means of two-step chromatographic treatment. The invention uses a non-activated ion exchange resin chromatographic method, followed by a second treatment on an XAD-type absorbent non-ionic resin which concentrates and completely purifies the hydroxytyrosol by means of elution with a methanol or ethanol:water dissolution (from 30 to 33%). The inventive method can also be applied to two-phase pomaces, three-phase pomaces and stones if they are subjected to a steam explosion process.