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- …

Chitin, white, horny substance found in the outer skeleton of insects, crabs, and lobsters and in the internal structures of other invertebrates. It is a polysaccharide consisting of units of the amino sugar …

Nov 14, 2019 · Chitin is a structural component of arthropod exoskeletons, fungi cell walls, mollusk shells, and fish scales. While humans don't produce chitin, it has uses in medicine and as a …

Nov 10, 2025 · Chitin is one of the most abundant and widespread organic materials produced by living organisms on Earth. This natural polymer is fundamental to the structural integrity of countless …

Aug 21, 2025 · Chitin is a natural substance found globally, serving as a fundamental structural material for many organisms. It is a complex carbohydrate, or polysaccharide, and is considered the second …

Chitin is a linear polysaccharide of the amino sugar N-acetyl glucosamine. It is present in the extracellular matrix of a variety of invertebrates including sponges, molluscs, nematodes and …

In fungal biology, chitin is a defining component of the cell wall, conferring rigidity, shape and osmotic protection.