Principle objective of this lecture is to presentation on Digestive Enzymes. There are 3 main types of digestive enzymes: Amylase breaks starch down into glucose; Protease breaks protein down into amino acids and Lipase breaks fats down into fatty acids and glycerol. Digestive enzymes are enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body. Finally describe on Egestion.