The name chitosan is derived from the Greek word for "shell" because the compound was first discovered in the chitinous shell of crabs and other crustaceans. This naturally occurring biopolymer is a polyaminosaccharide composed of β-1,4-glycosidically linked N-acetylglucosamine residues. It is therefore often referred to as polyglucosamine.
However, there are also some known examples of plant-based or non-animal sources of chitosan. Like all dietary fibres, chitosan is also known for its swelling properties.
Health Benefits of Chitosan According to the European Food Safety Authority (EFSA):
- Chitosan contributes to the maintenance of healthy blood cholesterol levels
- Recommended intake of 3g chitosan daily