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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.
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.
The milk must be "ripened" before adding in the rennet. The term ripening means allowing the lactic acid bacteria (LAB) to turn lactose into lactic acid, which lowers the pH of the solution, greatly aiding in the coagulation of the milk. This is vital for the production of cheese curds that are later formed into cheddar.
A farmer and his cow. The majority of herders in African countries are livestock owners. Livestock farming is a part of Nigeria's agriculture system.In 2017, Nigeria had approximately over 80 million poultry farming, 76 million goats, 43.4 million sheep, 18.4 million cattle, 7.5 million pigs, and 1.4 million of its equivalent. [1]
Quark or quarg is a type of fresh dairy product made from milk. The milk is soured, usually by adding lactic acid bacteria cultures, and strained once the desired curdling is achieved. It can be classified as fresh acid-set cheese. Traditional quark can be made without rennet, but in modern dairies small quantities of rennet are typically added ...
[2] [3] [4] It is sold in the United Kingdom [5] and North America, as well as India, [2] Nepal, Bangladesh, Nigeria, [5] Benin, and Togo. Bournvita was developed in England in the late 1920s and was marketed as a health food. [4] [6] [7] The original recipe included full-cream milk, fresh eggs, malt, edible rennet casein and chocolate.
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.
The berries contain a rennet-like protease that can be used to clot milk for cheese production. [ 5 ] [ 6 ] The plant is prone to leaf spot disease caused by Alternaria alternata . [ 7 ]