DECOLOURISING FATTY ESTERS BY PASSING A SOLUTION IN AN APOLAR SOLVENT THROUGH A COLUMN OF A MIXTURE COMPRISING MONTMORILLONITE, SILICA GEL AND/OR ACTIVE CARBON

摘要

In order to decolour a highly coloured fatty acid ester intended for food or cosmetic use which it is not possible to decolour satisfactorily for the envisaged applications by conventional decolourising, a fatty acid ester in solution in a nonpolar solvent is made to pass through a column charged with a mixture of montmorillonite, silica gel and/or active charcoal.