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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.
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.
An animal product is any material derived from the body of a non-human animal or their excretions. [1] Examples are meat , fat , blood , milk , eggs , honey , and lesser known products, such as isinglass , rennet , and cochineal .
Because animal skins and inflated internal organs have provided storage vessels for a range of foodstuffs since ancient times, it is probable that the process of cheese making was discovered accidentally by storing milk in a container made from the stomach of an animal, resulting in the milk being turned to curd and whey by the rennet from the ...
In general, 85 to 115 g (3 to 4 oz) of rennet is added per 450 kg (1,000 lb) of mix. The rennet serves to coagulate the milk protein and form curds. The vat must be mixed thoroughly after the addition of the rennet to ensure equal mixing, and it also helps to dilute the rennet to make it easier to spread around.
During the fermentation process, once sufficient lactic acid has been developed, rennet is added to cause the casein to precipitate. 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 ...
Pytia (Greek: Πυτιά, Ancient Greek: Πυετία Pyetia also) is curdled milk obtained from an animal's stomach, containing (and used as) rennet. References [ edit ]
The abomasum, also known as the maw, [1] rennet-bag, [1] or reed tripe, [1] is the fourth and final stomach compartment in ruminants. It secretes rennet , which is used in cheese creation. The word abomasum ( ab- "away from" + omasum " intestine of an ox ") is from Neo-Latin and it was first used in English in 1706.
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