There are various ways through which polysaccharides can be categorized. On the basis of the monosaccharides, polysaccharides can be categorized as homopolysaccharides (which have similar monosaccharides) and hetropolysaccharides (which have different types of monosaccharides). The three common types of polysaccharides include starch, cellulose and glycogen. Starch is the glucose polymer which is not soluble in water and it is digested with amylases. Cellulose is present in cell wall and it is indigestible by humans. Polysaccharides are large macromolecules and they are considered as important constituents of our food.
