1. Carbohydrate

2. polysaccharides Composed of >10 monosaccharaides
They linked together by glycosidic bond
General formula ( C6 H12 O5 ) n
Polysaccharides also known as glycan e.g. glycogen, starch and cellulose.

3. polysaccharides
The most abundant storag polysaccharides in nature are:
Starch in plants
Glycogen in animals
The most abundant structural polysaccharides in nature are:
Cellulose
Chitin

4. prosperities of polysaccharides
High molecular Wight
In soluble in water
Not sweet in taste
Non reducing sugar

5. polysaccharides
Homopolysaccharide Heteropolysaccharide

6. Homopolysaccharide Polymers of only a single kind of monosacchride
E.g. glycogen and starch
The polymers of glucose is called glucan
The polymers of fructose is called fructans

7. Homopolysaccharides
Unbranched Branched
e.g. Cellulose e.g. Glycogen

8. Heteropolysaccharides
Polymers of two or more different types of monosaccharides
E.g. mucopolysaccarides

9. Homopolysaccharides of biomedical importance
Storage Homopolysaccharides
Strutural Homopolysaccharides

10. Storage Homopolysaccharides
Starch is homopolysaccharide composed of α-D- glucose
It is the most abundant storage polysaccharides in plants
It is found in cereals, grains and roots
Starch contain of two kind of glucose
Amylose ( water soluble, unbranched)
Amylopectin ( insoluble in water, branched)

11. Storage Homopolysaccharides
Glycogen is branched homopolysaccharide
Composed of α-D-glucose
It is the most abundant storage polysaccharides in animals
The glycogen is branched glucan consist of several branched chains of α-D-glucose units.

12. Strutural Homopolysaccharides
Cellulose is unbranched homopolysacchharide
it is the most abundant plant structural polysaccharides
It is the major component of cell walls of the plant

13. Strutural Homopolysaccharides
Chitin is unbranched homopolysacchharide
Composed of β-D-N- acetyle-glucosamine
it is the most abundant animal structural polysaccharides in nature
it is the major component of exoskeleton of arthropods.

14. Other homopolysaccharide
inulin
is unbranched homopolysaccharide
Composed of D-fructose units
It is found in onion and garlic

15. Other homopolysaccharide
Dextrans
is branched homopolysaccharide
Composed of α- D-glucose units
Low mol.wt. used as plasma expander

16. Heteropolysaccharides
Also known as glycosaminoglycans
E.g. Mucopolysaccharides
Long, unbrranchednegatively charged heteropolysaccharides
Composed of alternating units of amino-sugar-acid

17. Heteropolysaccharide
Hyaluronic acid
Ti is a heteropolysaccharide
Composed of alternnating monosaccharide units
It is found in skin and synoval fluid of bone
It serve as a lubricant and shok absorber in bone joint

18. Heteropolysaccharides
Heparin
It is composed of alternating monosaccharide units
D-glucosamin and D-glucuronic acid
It is a natural blood anticoagulant.