Digestive enzymes main function is to target a specific nutrient, splitting it up into a form that can eventually be absorbed by the body. The most significant digestive enzymes are: Amylase, Maltase, Lactase, Lipase and Protease.For example, Amylase breakdown carbohydrates into simple sugars. Maltase breakdown maltose into glucose. Lipases convert fats into fatty acids and glycerol. And Proteases convert proteins into amino acids.