Considerando o texto abaixo, qual alternativa está correta?

“Peptone comes from the Greek and means to digest. Peptones are a mixture of water-soluble polypeptides, peptides, amino acids and other substances remaining after the digestion of protein material. Peptones are termed after the origin of raw material and often the process of hydrolysis is also used. The digestion of the protein material occurs enzymatic or by acid treatment. For the enzymatic hydrolysis of protein material proteolytic enzymes such as pepsin, papain, pancreatin which contains trypsin and chymotrypsin or trypsin. The enzymes are of animal (pancreatin or pepsin) or vegetable origin (papain from papaya), or proteases from microbial origin.” (Merck Microbiology Manual, 12th edition)