For retting of Jute, the fermenting microbe is:

Options

A. Methanophilic bacteria
B. Butyric acid bacteria
C. Helicobacter pylori
D. Streptococcus lactin

Answer

To solve the question "For retting of Jute, the fermenting microbe is:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Process of Retting**:
- Retting is a process used to separate the fibers from the stems of plants, such as jute. This process involves the decomposition of plant tissues in the presence of moisture and microorganisms.

2. **Identifying the Role of Microorganisms**:
- In retting, specific microorganisms help in breaking down the pectin and other substances that bind the fibers to the plant stem. This is crucial for extracting the fibers efficiently.

3. **Considering the Options Given**:
- The options provided are:
- Methophilic bacteria
- Butyric acid bacteria
- Helicobacter pylori
- Streptococcus lactis

4. **Analyzing Each Option**:
- **Methophilic bacteria**: These are not typically associated with the retting process.
- **Butyric acid bacteria**: These are anaerobic bacteria that play a significant role in the retting process by fermenting plant materials and aiding in fiber separation.
- **Helicobacter pylori**: This bacterium is known for its role in human gastric conditions and is not relevant to retting.
- **Streptococcus lactis**: While this bacterium is involved in fermentation processes, it is not specifically known for retting jute.

5. **Conclusion**:
- Based on the analysis, the correct answer is **Butyric acid bacteria**, as they are the fermenting microbes involved in the retting of jute.

### Final Answer:
The fermenting microbe used for the retting of jute is **Butyric acid bacteria**.

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