EVERYDAY SCIENCE

Detailed explanation-1: -Chitin is a naturally occurring polysaccharide existing in the outer shells of crustaceans, insect exoskeletons, and fungal cell walls. It is the second most abundant natural polymer after cellulose.

Detailed explanation-2: -Chitin, a linear polysaccharide found in fungi, crustaceous, insects, and parasites, is a water insoluble polymer composed of units of 1, 4-linked N-acetylglucosamine.

Detailed explanation-3: -The basic structural polysaccharide of fungal cell walls is chitin (a polymer of N-acetylglucosamine residues), which also forms the exoskeleton of arthropods (e.g., the shells of crabs).

Detailed explanation-4: -Chitin is the second most abundant biodegradable polymer produced in nature after cellulose. It is an acetylated polysaccharide composed of N-acetyl-d-glucosamine groups linked by (1→4) linkages and exists as ordered crystalline microfibrils shown in Fig.

Detailed explanation-5: -Chitin, a (1, 4)-linked homopolymer of N-acetylglucosamine, is a simple polysaccharide that is represented in the cell walls of all fungi studied to date [1, 2].