Drying technologies refer to various methods used to remove moisture from materials, such as food, textiles, and pharmaceuticals. Common techniques include air drying, freeze drying, and spray drying. Each method has its own advantages and is chosen based on the type of material and the desired quality of the final product. These technologies are essential in preserving products, extending shelf life, and improving storage conditions. For instance, freeze drying helps maintain the flavor and nutrients of food, while spray drying is often used for creating powdered forms of liquids. Overall, drying technologies play a crucial role in various industries.