Pepsin is a digestive enzyme that helps break down proteins into smaller peptides and amino acids. In a mixture of Pepsin powder, egg white, and hydrochloric acid (HCl), the Pepsin powder would help to partially digest the protein in the egg white, breaking it down into smaller molecules that can be more easily absorbed and utilized by the body. The HCl would also help to create an acidic environment in which Pepsin is most effective. Overall, the function of Pepsin in this mixture is to aid in the digestion of proteins.
