(1) Trypsin and chymotrypsinsecreted by pancreas help in thedigestion of proteins, lipase breaksfats into fatty acids and glycerol,and amylase break sugars. Allenzymes of pancreas act in analkaline medium. Pepsin is produced by the stomachand it acts on proteins in an acidicmedium. Salivary amylase isproduced in the mouth and itbreaks starches into sugars.Mucous does not have any enzyme.