Which of the following organic acid is produced by the fermentation of surgary syrups by Aspergilus niger and mucor species?

Options

A. Gluconic acid
B. Lactic acid
C. Citric acid
D. Acetic acid

Answer

To solve the question regarding which organic acid is produced by the fermentation of sugary syrups by Aspergillus niger and Mucor species, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the specific organic acid produced by the fermentation of sugary syrups using two types of fungi: Aspergillus niger and Mucor species.

2. **Review the Options**: The options given are:
- A) Gluconic acid
- B) Lactic acid
- C) Citric acid
- D) Acetic acid

3. **Analyze Each Option**:
- **Gluconic Acid**: This acid is produced by Aspergillus niger and Penicillium species but not specifically from sugary syrups. Thus, it is not the correct answer.
- **Lactic Acid**: This acid is primarily produced by Lactobacillus bacteria during fermentation of lactose, not by Aspergillus niger or Mucor species. Hence, this option is incorrect.
- **Citric Acid**: This acid is produced through the fermentation process carried out by Aspergillus niger and Mucor species when they ferment sugary syrups. This makes it a strong candidate for the correct answer.
- **Acetic Acid**: This acid is produced by the fermentation of alcohol by Acetobacter aceti, not directly from sugary syrups by Aspergillus niger or Mucor species. Therefore, this option is also incorrect.

4. **Identify the Correct Answer**: After analyzing all the options, the only organic acid produced by the fermentation of sugary syrups by Aspergillus niger and Mucor species is **Citric Acid**.

5. **Final Conclusion**: The correct answer to the question is **Citric Acid**.