5 Dietetic foods, food supplements and nutritional beverages for dietetic use, made from macro-algae, micro-algae, plants, plant extracts, probiotics, postbiotics, prebiotics and/or synbiotics; mixtures and preparations based on macro-algae, micro-algae, plants, plant extracts, probiotics, postbiotics, prebiotics and/or synbiotics for preparation of nutritional beverages for dietetic use