Amylase is an enzyme that helps to break down starch into sugar. Carbohydrates are polymers made up of a large number of smaller units linked together. It is not possible to directly absorb the polysaccharide. It is first broken down into the simple sugars or monosaccharides that it is made of and these are absorbed to provide a means for the body to produce energy. Amylase is contained in human saliva and it starts of the digestion process of carbohydrates as soon as food is eaten. The presence is amylase in saliva is the reason why many foods like bread are not sweet as soon as they are eaten but as the carbohydrates in bread is broken down into sugar they begin to taste sweet.
Amylase is also found in many cereals and fruits. In addition to this amylase is found in plants, fungi and bacteria.
Amylase is an enzyme and breaks down amylose. It's found in human saliva, certain bacteria, clothing, and dish detergents. What you're looking for in foods is anylose, the sugar. Amylose can be found in starches such as bread, cereal, etc.