Single cell protein can be useful in all, except

Options

A. Reducing environmental pollution
B. Decreasing pressure on agriculture
C. Preventing shift from meat to grain as diet by human beings
D. Being acceptable as food in future

Answer

To solve the question regarding the usefulness of single cell protein (SCP) in various contexts, we will analyze the options provided and determine which one does not align with the benefits of SCP.

### Step-by-Step Solution:

1. **Understanding Single Cell Protein (SCP)**:
- SCP refers to protein extracted from single-celled organisms such as algae, bacteria, fungi, and yeast.
- It is known for being rich in protein and low in carbohydrates.

2. **Evaluating the Options**:
- The options provided are:
a. Reducing environmental pollution
b. Decrease in pressure on agriculture
c. Preventing shift from meat to grain as diet by human beings
d. Being acceptable as food in the future

3. **Analyzing Each Option**:
- **Option a: Reducing environmental pollution**:
- SCP can be produced using waste materials (like sewage and agricultural waste), which helps in reducing pollution. This option is valid.

- **Option b: Decrease in pressure on agriculture**:
- By providing an alternative protein source, SCP can reduce the demand for traditional agricultural products, thus decreasing pressure on agriculture. This option is valid.

- **Option c: Preventing shift from meat to grain as diet by human beings**:
- This option suggests that SCP can prevent people from shifting their diets from meat to grains. However, SCP is not a direct substitute for meat and does not prevent dietary shifts. This option is likely the incorrect one.

- **Option d: Being acceptable as food in the future**:
- SCP is being researched and developed as a potential food source for the future, especially as a protein alternative. This option is valid.

4. **Conclusion**:
- The option that does not align with the usefulness of SCP is **c: Preventing shift from meat to grain as diet by human beings**. SCP does not prevent this shift; rather, it provides an alternative protein source.

### Final Answer:
The correct answer is **c: Preventing shift from meat to grain as diet by human beings**.

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