Collect news from news papers about milk production and impurities in milk.
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Milk is obtained from milch animals such as cows and buffaloes. ... Milk is adulterated using water, starch, urea, detergents etc. These are the impurities present in milk.In general, the gross composition of cow's milk in the U.S. is 87.7% water, 4.9% lactose (carbohydrate), 3.4% fat, 3.3% protein, and 0.7% minerals (referred to as ash). Milk composition varies depending on the species (cow, goat, sheep), breed (Holstein, Jersey), the animal's feed, and the stage of lactation.Later, in 1932, plastic-coated paper milk cartons were introduced commercially. In 1863, French chemist and biologist Louis Pasteur invented pasteurization, a method of killing harmful bacteria in beverages and food products.Before about 10,000 years ago or so, hardly anybody drank milk, and then only on rare occasions. The first people to drink milk regularly were early farmers and pastoralists in western Europe – some of the first humans to live with domesticated animals, including cows.
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