Polysaccharides form a diverse and complex family of biological macromolecules. They are polymeric carbohydrate molecules composed of long chains of monosaccharide units joined together by glycosidic linkages. It gives the constituent monosaccharides or oligosaccharides during hydrolysis. Polysaccharides own high molecular weights due to containing hundred to several thousand monosaccharides as well as polydispersed in nature with a wide range of closely related structures.