Digestive enzymes break down the food we eat into smallerparticles. In the mouth, there is salivary amylase which starts thebreak down of carbohydrates. Next, the stomach has pepsin whichstarts breaking down proteins. In the small intestine the pancreasreleases pancreatic amylase (carbohydrates), trypsin (proteins),and several other important enzymes. Things that may affect thefunction of these enzymes may be pH and temperature changes.Enzymes can be denatured if they are placed in an unsuitable pH ortemperature and therefore are unable to work.Hailey Amstrong