The first steps towards the use of astaxanthin in lipidprotein matrices have already been started in dairy foods, liquids and semi-liquids, such as flavored milks and yogurts; for instance: Immunoglobulin-rich milk ; aggregates of astaxanthin from 1 to 20 ppm in dairy products ; dairy products in generally ; milks with different fats contained as well as plain and diet yoghurt