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Chapter 28: Question 28.30 (page 1136)

Cellobiose, a disaccharide obtained by the hydrolysis of cellulose, is composed of two glucose units joined together in a 1→4-β- glycoside bond. What is the structure of cellobiose?

Short Answer

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Answer

Cellobiose

Step by step solution

01

Cellulose

Many glucose units combine and form the plant polysaccharide cellulose. Cellulose on hydrolysis forms a disaccharide unit that is cellobiose.

02

Disaccharide

The name “di” indicates two. Saccharide means carbohydrate. So two monosaccharide units combine and form a disaccharide. Example: Cellobiose, sucrose, maltose etc.

03

Cellobiose

The structure of cellobiose consists of two glucose units joined by 1→4-βglycoside bond. It exists in the pyranose ring. Its structure is as shown below:

Cellobiose

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Most popular questions from this chapter

Draw a Haworth projection for each compound using the structures in Figures 28.4 and 28.5.

Draw a stepwise mechanism for the following reaction.

Draw a stepwise mechanism for the following hydrolysis.

What glycosides are formed when each monosaccharide is treated with CH3CH2OH, HCl:

(a) β-D-Mannose; (b)α-D-glucose ; (c) β-D-fructose ?

What two aldoses yield D-xylose on Wohl degradation?
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