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Rennet has traditionally been used to separate milk into solid curds and liquid whey, used in the production of cheeses. Rennet from calves has become less common for this use, to the point that less than 5% of cheese in the United States is made using animal rennet today. [1] Most cheese is now made using chymosin derived from bacterial sources.
To produce cheese, rennet or an edible acid is added to heated milk. This makes the milk coagulate or curdle, separating the milk solids (curds) from the liquid whey. [4] Sweet whey is the byproduct of rennet-coagulated cheese, and acid whey (also called sour whey) is the byproduct of acid-coagulated cheese. [5]
Powder milk. Several foods, baked goods, creamers, and toppings all contain a variety of caseinates. Calcium caseinate's nutritional benefits include improving the structure configuration of foods; emulsifying and stabilizing fat; and enhancing foaming and foam stability.
Chymosin / ˈ k aɪ m ə s ɪ n / or rennin / ˈ r ɛ n ɪ n / is a protease found in rennet.It is an aspartic endopeptidase belonging to MEROPS A1 family. It is produced by newborn ruminant animals in the lining of the abomasum to curdle the milk they ingest, allowing a longer residence in the bowels and better absorption.
Κ-casein, or kappa casein, is a mammalian milk protein involved in several important physiological processes. Chymosin (found in rennet) splits K-casein into an insoluble peptide (para kappa-casein) and water-soluble glycomacropeptide (GMP).
Rennet is an enzyme, originally collected from the stomach of a milk-fed calf (natural rennet). This enzyme is responsible for the coagulation of the milk proteins to produce curds. Cheese produced this way is neither vegetarian nor kosher. Coagulation can also be achieved using acids, but this method yields lower-quality cheddar.
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