Amylase is a common name used for Glycoside hydrolase enzyme, which is found in human saliva. It breaks the glycosidic linkage of the complex carbohydrate molecules and convert them into smaller and simpler sugars. Its found in human mouth/saliva and intestines. For further details, visit the following sites.
en.wikipedia.org
en.wikipedia.org
en.wikipedia.org
en.wikipedia.org