Fruit juice are clarified by ___________ .

Options

A. Lipases
B. Pectinase and protease
C. Streptokinase
D. None of the above

Answer

To solve the question "Fruit juices are clarified by ___________", we need to analyze the options provided and understand the role of different enzymes in the clarification of fruit juices.

### Step-by-Step Solution:

1. **Understanding the Question**:
- The question is asking which enzyme is responsible for clarifying fruit juices. Clarification refers to the process of making the juice clearer by removing pulp and other solid particles.

2. **Analyzing the Options**:
- **A. Lipase**: This enzyme is primarily involved in breaking down fats and is used in detergent formulations. It is not relevant to fruit juice clarification.
- **B. Pectinase and Protease**: Pectinase breaks down pectin, a substance found in the cell walls of fruits, which helps in reducing the viscosity of the juice and clarifying it. Protease breaks down proteins, which can also contribute to the clarification process.
- **C. Streptokinase**: This enzyme is used as a clot buster in medical applications and is not involved in the clarification of fruit juices.
- **D. None of the above**: This option suggests that none of the listed enzymes are responsible for the clarification, which is incorrect based on the analysis of option B.

3. **Selecting the Correct Answer**:
- Based on the analysis, the correct answer is **B. Pectinase and Protease**. These enzymes work together to clarify fruit juices by breaking down pectin and proteins, resulting in a clearer appearance.

### Final Answer:
Fruit juices are clarified by **B. Pectinase and Protease**.

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