An enzyme produced commercially from Saccharomyces cerevisiae is :

Options

A. Lactase
B. Invertase
C. Amylase
D. Maltase

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about an enzyme produced commercially from *Saccharomyces cerevisiae*, which is a species of yeast.

2. **Understand the Role of Yeast**: *Saccharomyces cerevisiae* is primarily known for its role in fermentation processes. Yeast is a unicellular fungus that ferments sugars to produce alcohol and carbon dioxide.

3. **Identify the Enzymes Produced**: The two main enzymes produced by *Saccharomyces cerevisiae* during fermentation are:
- **Invertase**: This enzyme breaks down sucrose into glucose and fructose.
- **Zymase**: This enzyme further breaks down glucose and fructose into ethanol and carbon dioxide.

4. **Determine the Correct Enzyme**: Among the options provided in the question, we need to identify which enzyme is produced commercially from *Saccharomyces cerevisiae*.
- Invertase is involved in the breakdown of sucrose.
- Zymase is responsible for converting sugars into ethanol and carbon dioxide.

5. **Eliminate Incorrect Options**:
- Lactase is not produced by yeast; it breaks down lactose found in milk.
- Amylase is involved in breaking down starch, not directly related to *Saccharomyces cerevisiae* fermentation.
- Maltase breaks down maltose but is not primarily associated with the fermentation process of yeast.

6. **Conclusion**: The enzyme produced commercially from *Saccharomyces cerevisiae* is **Invertase**.

**Final Answer**: Invertase

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