Ptyalin is an enzyme of

Options

A. Gastric juice
B. Pancreatic juice
C. Intestinal juice
D. Saliva

Answer

**Step-by-Step Solution:**

1. **Identify the Enzyme**: The question asks about ptyalin, which is an enzyme.

2. **Determine the Source**: We need to identify where ptyalin is produced. The options given are gastric juice, pancreatic juice, intestinal juice, and saliva.

3. **Recall the Function of Ptyalin**: Ptyalin is also known as salivary amylase. It is an enzyme that plays a crucial role in the digestion of carbohydrates.

4. **Identify the Site of Action**: Salivary amylase (ptyalin) acts on dietary starch. It breaks down starch into simpler sugars, primarily maltose and limit dextrin.

5. **Locate the Gland**: Among the salivary glands, ptyalin is secreted specifically by the parotid gland.

6. **Conclusion**: Based on the above points, the correct answer is that ptyalin is an enzyme of saliva.

**Final Answer**: Ptyalin is an enzyme of saliva.

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