Carbohydrates II

Monosaccharides

molecular structure

molecular structure.

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Disaccharides

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shows a α-glycosidic bond

shows a β-glycosidic bond, like .

Polysaccharides

• Starch
  • Amylose

We add a , , and residues.

to observe helical structure

and addition of more glucose residues to reach a molecule

Look from a .

• • Amylopectin.-

A fragment of amylopectin including .

Zoom in to show a

.

By adding to 25 glucose residues we get a .

to show that branch points are spaced by 24-30 glucose residues.

• .- Structure like amylopectin but with branch points spaced by 8-12 glucose residues.

• Cellulose.-

See cellulose.

• .- A polymer of .

A chitin fragment.

• .- Heteropolysaccharide with alternating residues of and