Question

What are the disaccharides and polysaccharides present in each of the following? (13.6,13.7)

Short answer

A disaccharide, often known as double sugar, is a compound made up of two simple sugar molecules (monosaccharides) bonded together.

Step-by-step solution

Introduction

• Lactose is made up of galactose and glucose connected by a 1,4-glycosidic bond and is present in milk and dairy products.

a) Identify the disaccharides and polysaccharides present in each of the following

• Lactose, often known as milk sugar, is commonly found in milk.
• Lactose is a disaccharide that is generated when galactose and glucose are combined.

b) Identify the disaccharides and polysaccharides present in each of the following 

• The most important of them are sucrose, lactose, and maltose.
• Sucrose is the most abundant and consists of a molecule of α-glucose and β-fructose linked together.
• Maltose is mainly produced by partial hydrolysis of starch and consists of two glucose units linked by an α-1,4-glycosidic bond.
• Potatoes contain three main types of sugars: fructose, glucose, and sucrose. Sucrose is a disaccharide formed from glucose and fructose.