Patent ID: 6849770

Claim:
Method for obtaining purified hydroxytyrosol from products and by-products derived from the olive tree, characterized in that it comprises the following stages: a) introducing the hydroxytyrosol source into a column of non-activated, ion exchange resin and, after elutriation with water, obtaining a solution containing at least 85% of the hydroxytyrosol present in the source of hydroxytyrosol introduced in the column, therewith obtaining 60-70% rich hydroxytyrosol, b) introducing the solution containing hydroxytyrosol from the previous stage into a second column of non ionic resin and subsequent elutriation with a mixture of methanol or ethanol:water (from 30 to 33%), obtaining a solution containing at least 75% of the hydroxytyrosol present in the source of hydroxytyrosol introduced in the first stage with a minimum purity of 95%.