Definition of Polysaccharides



Polysaccharides are one of the types of carbohydrates which consist of thousands of monosaccharide subunits. The monomers like glucose when polymerizing together, form a large polymer of sugar which is generally tasteless and insoluble in water. Polysaccharides are also named glycan and there are two types of them i.e., homopolysaccharide in which there is a single type of monosaccharides and heteropolysaccharides in which the monosaccharides are different.

 


The polysaccharides may exist in the form of a linear chain or a branched structure. As the polysaccharides are macromolecules, they are responsible for storing energy and for providing support to the cells and the tissues, thus maintaining the integrity of the structures.

 


Examples of Polysaccharides:

Starch, glycogen, cellulose, pectin, etc., all are polysaccharides. The excess glucose in the body is stored in the form of glycogen. Cellulose gives a very tough structure and hence the cell wall of the plants is made up of it.

 


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