The dairy products such as cheese, yogurt, kefir, etc. contain a lower level of lactose as compared to milk. Thus, they are known as low-lactose dairy foods. The manufacturers have developed low-lactose dairy foods in powder form to extend their shelf-life and to increase their applications in the end-use industries. The low-lactose dairy foods have applications in several industries such as food, beverage, animal nutrition, cosmetic, and animal nutrition.