Glycoside hydrolases are enzymes that break down glycosidic bonds in carbohydrates. They play a crucial role in the digestion of complex sugars, converting them into simpler sugars that can be easily absorbed by the body. These enzymes are found in various organisms, including humans, plants, and microorganisms. These enzymes are classified into different families based on their structure and mechanism of action. Glycoside hydrolases are essential in various biological processes, such as cell wall degradation in bacteria and the metabolism of dietary carbohydrates in animals. Their study is important for applications in biotechnology and medicine.