The role of disaccharides in digestion is to act as an intermediate source of energy that is broken down into monosaccharides for absorption.
Explanation:
- Disaccharides such as sucrose, lactose, and maltose cannot be absorbed directly.
- They must first be digested into simpler sugars by enzymes called disaccharidases.
Digestion Process:
- Disaccharides enter the small intestine
- Enzymes act on them:
- Sucrase → sucrose into glucose + fructose
- Lactase → lactose into glucose + galactose
- Maltase → maltose into glucose
- Monosaccharides are absorbed into the bloodstream
Key Functions:
- Provide energy after breakdown
- Support metabolic activities
- Help maintain blood glucose levels
Clinical Relevance:
- Enzyme deficiencies can lead to digestive issues such as lactose intolerance
Conclusion:
Disaccharides play a crucial role in digestion by being converted into monosaccharides, which are then absorbed and used for energy.