Question:
Rennet is obtained from -
Rennet is obtained from -
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With the rise of vegetarian diets, recombinant chymosin produced via genetically modified microorganisms (such as Aspergillus niger or Kluyveromyces lactis) now accounts for a large majority of the global industrial cheese production.
Updated On: Aug 20, 2026
- Microorganisms
- Stomach of calf
- Papaya seeds
- Algae
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Rennet is a complex mixture of enzymes used in cheese-making to coagulate milk casein, forming curds and whey.
Step 2: Detailed Explanation:
Traditional animal rennet contains the proteolytic enzyme chymosin (also known as rennin).
This enzyme is synthesized and secreted by the gastric mucosa of the abomasum (the fourth stomach compartment) of young, unweaned, milk-fed calves.
It selectively cleaves the Phe105-Met106 peptide bond of \(\kappa\)-casein, destabilizing the micelle structure and causing milk coagulation.
While microbial rennet (produced by genetically modified microbes or fungi) is widely used today, the classic and traditional source of natural rennet is the stomach of a calf.
Step 3: Final Answer:
Natural rennet is obtained from the stomach of a calf, which corresponds to option (B).
Rennet is a complex mixture of enzymes used in cheese-making to coagulate milk casein, forming curds and whey.
Step 2: Detailed Explanation:
Traditional animal rennet contains the proteolytic enzyme chymosin (also known as rennin).
This enzyme is synthesized and secreted by the gastric mucosa of the abomasum (the fourth stomach compartment) of young, unweaned, milk-fed calves.
It selectively cleaves the Phe105-Met106 peptide bond of \(\kappa\)-casein, destabilizing the micelle structure and causing milk coagulation.
While microbial rennet (produced by genetically modified microbes or fungi) is widely used today, the classic and traditional source of natural rennet is the stomach of a calf.
Step 3: Final Answer:
Natural rennet is obtained from the stomach of a calf, which corresponds to option (B).
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