Question:
What is the basic structural difference between starch and cellulose?
Answer:
Starch consists of two types of components - amylose and amylopectin. Amylose is a long linear chain of ∝-D-(+)-glucose units linked by C1-C4 glycosidic linkage (∝-link).
Amylopectin is a branched-chain polymer of ∝-D-glucose units. The chain is formed by C1-C4 glycosidic linkage and branching occurs by C1-C6 glycosidic linkage.
Cellulose is a straight-chain polysaccharide of β-D-glucose units which are joined by C1-C4 glycosidic linkage (β-link).
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