Alcoholic fermentation occurs in the presence of

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Alcoholic Fermentation**:
- Alcoholic fermentation is a biological process where sugars are converted into alcohol and carbon dioxide by yeast or certain bacteria. This process is commonly used in the production of alcoholic beverages and bread.

2. **Identifying the Enzymes**:
- The question provides four options: zymase, amylase, invertase, and maltase. We need to determine which of these enzymes is specifically involved in alcoholic fermentation.

3. **Analyzing Each Option**:
- **Zymase**: This is a complex of enzymes found in yeast that catalyzes the fermentation of sugars into ethanol and carbon dioxide.
- **Amylase**: This enzyme breaks down starches into sugars but is not directly involved in the fermentation process itself.
- **Invertase**: This enzyme converts sucrose into glucose and fructose, and is primarily used in candy making.
- **Maltase**: This enzyme breaks down maltose into glucose and is used in the baking industry but does not directly catalyze alcoholic fermentation.

4. **Conclusion**:
- Since zymase is the enzyme that facilitates the conversion of sugars into ethanol and carbon dioxide during alcoholic fermentation, the correct answer is **zymase**.

**Final Answer**: Alcoholic fermentation occurs in the presence of **zymase**.

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