The present invention provides a process for producing a composition which is preferably a food, food intermediate, dietary supplement, feed or pet food, which comprises mixing together a peptide mixture, comprising a bioactive peptide, and a protein source having a protein quality (expressed as PER) of 2.4 or lower. The composition of the invention can be used to improve the bioavailability of bioactive peptides or used as a food, food intermediate, nutraceutical, dietary supplement, feed, or pet food.
