The activity is concerned with manufacturing of lactose and casein as follows: - Lactose or milk sugar is adisaccharide that results from the bonding of glucose sugar and galactose sugar. It is found mainly in milk and its derivatives. Centrifuges are used as part of a series of washing steps to obtain pure lactose. Lactose is used in many industries, including: • Lactose is used as a suitable medium for the growth of penicillium mushrooms for the purpose of producing penicillin. • Linking flavors and smells in the food industry. • Manufacturing low-sugar foods. • Increase product life, storage capacity for extended periods, and other uses. - Casein is a solid protein found in cow's milk. It is manufactured using the same technology as lactose production. Casein has many uses, including: Weight control, muscle growth, etc.