Ptyalin, an enzyme work in saliva in -

Options

A. Alkaline medium
B. almost neutral medium
C. Acidic medium
D. All media

Answer

**Step-by-Step Solution:**

1. **Identify the enzyme:** The enzyme in question is Ptyalin, which is also known as salivary amylase. It is produced by the salivary glands.

2. **Function of Ptyalin:** Ptyalin plays a crucial role in the digestion of starch. It catalyzes the breakdown of starch into simpler sugars, such as maltose.

3. **Determine the pH range for Ptyalin activity:** Ptyalin functions optimally at a pH range of approximately 6.8 to 7. This pH is considered to be almost neutral.

4. **Evaluate the options provided:**
- Option 1: Alkaline medium - Incorrect, as Ptyalin does not work well in alkaline conditions.
- Option 2: Almost neutral medium - Correct, as it aligns with the optimal pH range for Ptyalin.
- Option 3: Acidic medium - Incorrect, since Ptyalin does not function optimally in acidic conditions.
- Option 4: All media - Incorrect, as Ptyalin has a specific pH range where it is effective.

5. **Conclusion:** The correct answer to the question is option 2: almost neutral medium.

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