A composition for enhancing protein digestion is disclosed, which includes at least one acid component, at least one base component and a protein digestion enhancer, wherein the at least one acid component is one selected from a group consisting of an organic acid, a phosphoric acid and a combination thereof, the at least one base component is one selected from a group consisting of an organic base, a phosphate and a combination thereof, the at least one acid component and the at least one base component conjugate with each other to form a buffer formulation, and the protein digestion enhancer is one selected from a group consisting of an ascorbic acid, a salt of the ascorbic acid and a combination thereof.

A composition for enhancing protein digestion is disclosed, which includes at least one acid component, at least one base component and a protein digestion enhancer, wherein the at least one acid component is one selected from a group consisting of an organic acid, a phosphoric acid and a combination thereof, the at least one base component is one selected from a group consisting of an organic base, a phosphate and a combination thereof, the at least one acid component and the at least one base component conjugate with each other to form a buffer formulation, and the protein digestion enhancer is one selected from a group consisting of an ascorbic acid, a salt of the ascorbic acid and a combination thereof.

The invention relates to a process for dephosphorylation of skim milk, ultra-filtered milk (UF milk) or micellar casein isolate (MCI) comprising (i) acidification of a skim milk, UF milk or MCI preferably not lower than pH 6.0, preferably between 6.0 and 6.7, (ii) cooling the acidified skim milk, UF milk or MCI to the temperature between 0 C. and 15 C., (iii) adding gluconate and/or maleate to the cooled skim milk, UF milk or MCI and, (iv) washing the skim milk, UF milk or MCI, to remove phosphorus, thus dephosphorylating the skim milk, UF milk or MCI, preferably to an extent that the total phosphorous content of the skim milk, UF milk or MCI is reduced with at least 20%, preferably 20-40%, more preferably 30-40% compared to the material provided to step (i). The invention also relates to dephosphorylated MPC, MPI or MCI obtainable by the process of the invention, and to a liquid heat-sterilized enteral nutritional composition comprising 2.0-3.0 kcal/ml wherein 16-35 en % is provided by protein, the combination of caloric content and relative protein caloric content selected such that there is 10-18 g/100 ml protein, preferably 12-18 g/100 ml protein in the composition, wherein the protein comprises micellar casein (MC), whey protein (WP) and optionally caseinate (CAS), wherein there is at least 70 wt % MC and less than 15 wt % WP, based on total protein content, and wherein the composition has a total amount of phosphorous less than 192 mg/100 ml and/or 30-80 mg/100 kcal, preferably at least 30-80 mg/100 kcal, most preferably less than 192 mg/100 ml and 30-80 mg/100 kcal.