Rennet was isolated by

Options

A. Khune
B. Hansen
C. Pasteur
D. Paygen and Persoz.

Answer

**Step-by-Step Solution:**

1. **Understanding Rennet**: Rennet is a complex of enzymes that is crucial in the cheese-making process. It is primarily used to curdle milk, separating the solid curds from the liquid whey.

2. **Uses of Rennet**: The main uses of rennet include:
- Separating solid curd from milk, which is essential in cheese production.
- Producing various types of cheese, as it helps in coagulating the milk.

3. **Sources of Rennet**: Rennet is typically found in the stomachs of certain animals. The primary sources include:
- The stomach of calves (young cattle).
- The stomachs of goats.

4. **Discovery of Rennet**: The question specifically asks who isolated rennet. The scientist credited with isolating rennet is Hensay.

5. **Conclusion**: Therefore, the correct answer to the question "Rennet was isolated by" is Hensay.

**Final Answer**: Rennet was isolated by Hensay.

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