Patent ID: 8580557

Claim:
A casein hydrolysate obtained by hydrolyzing animal milk casein with a group of enzymes, said hydrolysate comprising free amino acids and peptides, wherein the average amino acid chain length of said free amino acids and peptides in said hydrolysate is not longer than 2.1 amino acid residues, wherein said group of enzymes comprise peptidases capable of cleaving a peptide bond Pro-Xaa and leucine amino peptidases, and further comprises at least one of neutral protease I and neutral protease II, wherein said peptides comprise in vivo indigestible peptides consisting of dipeptides having a sequence Xaa-Pro and tripeptides having a sequence Xaa-Pro-Pro, wherein Xaa in Xaa-Pro and Xaa and Xaa-Pro-Pro is any amino acid present in animal milk casein, and wherein a content of said dipeptides having a sequence Xaa-Pro is not lower than 5 wt % of a total amount of the free amino acids and the peptides in the hydrolysate, and a content of said tripeptides having a sequence Xaa-Pro-Pro is not lower than 1 wt % of a total amount of the free amino acids and the peptides in the hydrolysate.