The antioxidant composition is of vegetal origin and is substantially free of mono-, di- or polysaccharides it is more specifically an extract of pre-processed vegetal material like e.g. pressing residues of fruits or vegetables. The polysaccharides thus afforded can be further converted separately into an energetic substrate like alcohols or biogas.The process for the preparation of said antioxidant composition comprises as key reaction steps an extraction by means of a polar organic solvent as well an elution on polymer resin material suitable for fixing selectively polyphenols or the like while allowing the selective elution of mono-, di- or polysaccharides.Food or beverages, cosmetic or pharmaceutical compositions which contain the said antioxidant composition
