Chitin is another of the most abundant polysaccharides on earth, which widely exists in the exoskeleton of shrimps, crabs, and insects as well as in the cell walls of fungi and algae.

Is polysaccharide a chitin?

Chitin is a modified polysaccharide that contains nitrogen; it is synthesized from units of N-acetyl-D-glucosamine (to be precise, 2-(acetylamino)-2-deoxy-D-glucose). These units form covalent β-(1→4)-linkages (like the linkages between glucose units forming cellulose).

What is chitin found in?

Chitin, which occurs in nature as ordered macrofibrils, is the major structural component in the exoskeletons of the crustaceans, crabs and shrimps, as well as the cell walls of fungi.