Identify the microorganisms that produces biomass of proteins

Options

A. Monascus purpureus
B. Aspergillus niger
C. Methylophilus methylotropus
D. Trichloderma polysporum

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Biomass of Protein:**
- Biomass of protein refers to microorganisms that can produce protein-rich biomass, often referred to as single cell protein (SCP). These microorganisms are important for nutritional supplements for both humans and animals.

2. **Identify the Options Given:**
- The options provided are:
- A) Monascus purpurus
- B) Aspergillus niger
- C) Methylophilus methylotropus
- D) Trichoderma polysperma

3. **Evaluate Each Option:**
- **A) Monascus purpurus:**
- This is a fungus known for producing statins, which are cholesterol-lowering agents. It does not produce biomass of protein.
- **B) Aspergillus niger:**
- Another fungus, primarily used for the production of citric acid. It does not produce biomass of protein.
- **C) Methylophilus methylotropus:**
- This microorganism is known to be a source of single cell protein and is used as animal feed. It produces biomass of protein.
- **D) Trichoderma polysperma:**
- This is also a fungus, and it is known for producing cyclosporine A, an immunosuppressive agent, not biomass of protein.

4. **Conclusion:**
- Based on the evaluations, the only microorganism that produces biomass of protein is **C) Methylophilus methylotropus**.

**Final Answer: C) Methylophilus methylotropus**

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