What are the three most common disaccharides?

The three most common disaccharides are sucrose, lactose, and maltose.

Explanation:
These disaccharides are widely found in everyday foods and play an important role in human nutrition.

1. Sucrose:

• Composition: glucose + fructose
• Commonly known as table sugar
• Found in sugarcane, sugar beet, fruits

1. Lactose:

• Composition: glucose + galactose
• Known as milk sugar
• Present in milk and dairy products

1. Maltose:

• Composition: glucose + glucose
• Formed during digestion of starch
• Found in germinating grains

Key Function:

• Provide energy after being broken down into monosaccharides during digestion

Conclusion:
Sucrose, lactose, and maltose are the three most common disaccharides, each with distinct sources and compositions.