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Animal rennet to be used in the manufacture of cheddar cheese. Rennet (/ ˈ r ɛ n ɪ t /) is a complex set of enzymes produced in the stomachs of ruminant mammals. Chymosin, its key component, is a protease enzyme that curdles the casein in milk. In addition to chymosin, rennet contains other enzymes, such as pepsin and a lipase.
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]
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. The two key components of natural rennet are chymosin and bovine pepsin. Extracts from plants such as nettles ...
The production yield of coagulated whey cheese is generally lower than ordinary cheese, as whole milk contains only 1% whey protein. [ citation needed ] Yield is dependent on the composition of the whey, the addition of milk or cream, the production technology, and the composition (moisture content) of the final product.
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Rennet contains the enzyme chymosin which converts κ-casein to para-κ-caseinate (the main component of cheese curd, which is a salt of one fragment of the casein) and glycomacropeptide, which is lost in the cheese whey. As the curd is formed, milk fat is trapped in a casein matrix.
Similarly, blue cheese also ranks high in the fat content category, with 8 grams of fat and 100 calories, per one-ounce serving. Check out the slideshow above for the 12 best and worse cheeses for ...
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.