If we take food rich in lime juice, then

Options

A. a) action of ptylain on strach is enhanced
B. b) action of ptyalin on starch is reduced
C. c) action of ptylain on starch is unaffected
D. d) action of ptyalin on starch stops.

Explanation

To solve the question regarding the effects of consuming food rich in lime juice on the action of salivary amylase (also known as tylenol), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components**:
- Lime juice is acidic and has a pH of less than 7.
- Salivary amylase (tylenol) is an enzyme that helps in the digestion of starch.

2. **Identifying the Optimum pH**:
- The optimum pH for the activity of salivary amylase is around 6.7. This means that it works best in slightly acidic to neutral conditions.

3. **Effect of Lime Juice on pH**:
- When we consume food rich in lime juice, the acidity of the medium increases (pH drops below 6.7).

4. **Impact on Salivary Amylase Activity**:
- Since the pH becomes more acidic due to lime juice, it is no longer in the optimum range for salivary amylase to function effectively.
- Therefore, the activity of salivary amylase is inhibited or reduced.

5. **Evaluating the Options**:
- Option A: The action of tylenol on starch is enhanced - **Incorrect**.
- Option B: The action of tylenol on starch is reduced - **Correct**.
- Option C: The action of tylenol on starch is unaffected - **Incorrect**.
- Option D: The action of tylenol on starch stops - **Incorrect**.

6. **Conclusion**:
- The correct answer is that the action of tylenol on starch is reduced due to the acidic nature of lime juice.

### Final Answer:
**The action of tylenol on starch is reduced when consuming food rich in lime juice.**

---