which is the following microbe is responsible for commercial production of acid present in lime ?

Options

A. Clostridium butylicum , a bacterium
B. Aspergillums niger , a fungus
C. Lactobacillus , a bacterium
D. Trichoderma polysporum , a fungus

Answer

To solve the question regarding which microbe is responsible for the commercial production of the acid present in lime, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Acid in Lime**:
- The acid present in lime is citric acid.

2. **Determine the Microbe Responsible for Citric Acid Production**:
- Citric acid is primarily produced by certain microorganisms.

3. **Identify the Specific Microbe**:
- The specific microbe known for the commercial production of citric acid is a type of fungus.

4. **Name the Fungus**:
- The fungus responsible for citric acid production is called **Aspergillus niger**.

5. **Additional Information**:
- Aspergillus niger is not only involved in citric acid production but also produces other organic acids, such as gluconic acid. However, it can cause adverse effects in some fruits and vegetables, leading to a condition known as Black Mold Disease.

6. **Conclusion**:
- Therefore, the correct answer to the question is **Aspergillus niger**.

### Final Answer:
The microbe responsible for the commercial production of the acid present in lime is **Aspergillus niger**.

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