"Casein (/\u02C8ke\u026As.\u026An/ or /\u02C8ke\u026A\u02CCsi\u02D0n/, from Latin caseus, \"cheese\") is the name for a family of related phosphoproteins (\u03B1S1, \u03B1S2, \u03B2, \u03BA). These proteins are commonly found in mammalian milk, making up 80% of the proteins in cow milk and between 20% and 45% of the proteins in human milk.Casein has a wide variety of uses, from being a major component of cheese, to use as a food additive, to a binder for safety matches."@en .