Chitin

Chitin (CAS 1398-61-4), also referenced in technical contexts as PNAG, is a naturally derived polysaccharide obtained primarily from crustacean shells and fungal biomass. It functions as a structural biopolymer and rheology modifier across food, pharmaceutical, agricultural, and biotechnology applications.

In pharmaceutical and biomedical manufacturing, this material is processed into films, membranes, and scaffolds used in wound dressings and controlled-release delivery systems. Food and nutrition formulators incorporate it as a dietary fiber source and texture modifier in functional food products.

Agricultural applications include its use as a soil amendment and crop biostimulant, where it activates plant defense responses to improve yield resilience. In biotechnology, it serves as a chromatography matrix material and as a substrate for enzyme immobilization in bioprocessing workflows.

The product is supplied as a white to off-white powder, with flake and fibrous forms available depending on the source material and processing method. Standard grades include technical, food-grade, and pharmaceutical-grade material for various industrial needs.

Purity specifications are typically defined by the degree of deacetylation and molecular weight range to ensure consistency. Shrimp-derived and squid-derived variants are the most commercially prevalent options for global manufacturers and distributors.

Fungal-sourced material is also available for applications requiring non-crustacean certification or specific vegan compliance. This versatile biopolymer continues to be a critical component in sustainable chemical development and advanced material science.