Chyme of a person who has consumed only starch will show the presence of

Options

A. Maltose and glucose
B. Dextrin and maltose
C. Strach,dextrin and maltose
D. Starch,dexrin and glucose

Answer

To solve the question regarding the composition of chyme in a person who has consumed only starch, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Starch Digestion**:
- When a person consumes starch, the digestion begins in the mouth. The enzyme salivary amylase (also known as ptyalin) starts breaking down starch into smaller carbohydrate molecules.

2. **Role of Salivary Amylase**:
- Salivary amylase breaks down approximately 30% of the starch into maltose and limit dextrins. Maltose is a disaccharide, and limit dextrins are small carbohydrate fragments.

3. **Movement to the Stomach**:
- After chewing, the partially digested food (now called bolus) is swallowed and enters the stomach. In the stomach, the food mixes with gastric juices, forming a semi-liquid substance known as chyme.

4. **Digestion in the Stomach**:
- It is important to note that carbohydrate digestion does not occur in the stomach due to the acidic environment. Therefore, the starch that was not digested in the mouth (approximately 70%) remains intact in the chyme.

5. **Composition of Chyme**:
- As a result, the chyme will contain:
- Un-digested starch (70%)
- Maltose (from the 30% that was digested in the mouth)
- Limit dextrins (also from the 30% that was digested in the mouth)

6. **Conclusion**:
- The chyme of a person who has consumed only starch will show the presence of starch, maltose, and limit dextrins. Therefore, the correct answer is that the chyme will contain starch, maltose, and limit dextrins.

### Final Answer:
The chyme will show the presence of starch, maltose, and limit dextrins.

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