Which of the following is used to manufacture ethanol from starch

Options

A. Penicilline
B. Saccharomyes
C. Azotobactor
D. lactobacillus

Answer

To solve the question of which organism is used to manufacture ethanol from starch, we can break down the process into clear steps:

### Step-by-Step Solution:

1. **Understanding the Process of Ethanol Production**:
- Ethanol production from starch involves two main steps: saccharification and fermentation.

2. **Step 1 - Saccharification**:
- In this step, starch is converted into sugars. This conversion is typically facilitated by specific enzymes or microorganisms. The enzymes involved in this process are amylase and glucoamylase. These enzymes break down starch into simpler sugars like glucose.

3. **Step 2 - Fermentation**:
- The sugars produced from saccharification are then fermented to produce ethanol. This is where specific microorganisms come into play. The most commonly used microorganism for this fermentation process is a yeast called **Saccharomyces cerevisiae**.

4. **Conclusion**:
- Therefore, the correct answer to the question is **Saccharomyces cerevisiae**, as it is the microorganism used to convert sugars into ethanol during the fermentation process.

### Final Answer:
- The organism used to manufacture ethanol from starch is **Saccharomyces cerevisiae**.

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