Disaccharidases are enzymes that break down disaccharides, which are carbohydrates made up of two sugar molecules linked together. Common disaccharides include sucrose, lactose, and maltose. These enzymes are essential for digestion, as they help convert disaccharides into simpler sugars, like glucose, that the body can easily absorb and use for energy. These enzymes are produced in the small intestine and play a crucial role in the digestive process. For example, lactase is a disaccharidase that specifically breaks down lactose, the sugar found in milk. A deficiency in disaccharidases can lead to digestive issues, such as lactose intolerance.