Blood cholesterol lowering statins are obtained from

Options

A. Trichoderma polysporum
B. Acetobacter aceti
C. Monascus purpurens
D. Aspergillus niger

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the source of blood cholesterol-lowering statins. Statins are drugs that help reduce cholesterol levels in the blood.

2. **Identifying the Options**: The options provided are:
- Trichoderma polysporum
- Acetobacter aceti
- Monascus purpurans
- Aspergillus niger

3. **Analyzing Each Option**:
- **Trichoderma polysporum**: This is a fungus known for producing cyclosporine A, which is used to suppress the immune system in transplant patients. It does not produce statins.
- **Acetobacter aceti**: This is a type of bacteria used in vinegar production by converting ethanol into acetic acid. It is not related to statin production.
- **Monascus purpurans**: This is a type of mold that is used in the fermentation of rice. It produces substances that can lower cholesterol and triglyceride levels, making it a potential source of statins.
- **Aspergillus niger**: This fungus is primarily used for producing citric acid and various enzymes, but it does not produce statins.

4. **Conclusion**: After analyzing all the options, the organism that produces blood cholesterol-lowering statins is **Monascus purpurans**.

5. **Final Answer**: The correct answer is **Monascus purpurans**.

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