Abstract Whey, which is a by-product of the production hard, medium and soft cheeses rennet, called sweet whey has pH 5.9-6.6. The inorganic acid precipitated casein produces an acidic with 4.3-4.6. With estimated 180 million tonnes in 2021, global contains around 1.5 ever-increasingly expensive protein 8.6 lactose, important source carbohydrates for world. Recent research shows that proteins a...