5 October, 2026

High-Purity Chitosan: Moving Beyond Conventional Biopolymers

Chitosan is a naturally occurring polysaccharide obtained by the deacetylation of chitin, which is found in the exoskeletons of crustaceans, fungi and insects. Its biodegradable and biocompatible nature has made it one of the most closely studied biopolymers in biomedicine, cosmetics and sustainable materials.

Not all chitosan performs the same. The degree of deacetylation (DDA) largely decides how soluble, reactive and bioactive the material will be.

Why a DDA above 90% matters

• Higher solubility in acidic and neutral systems, which makes formulation easier.
• Greater chemical reactivity and biological activity compared with conventional grades (DDA of roughly 70-85%).
• More consistent performance across cosmetic, pharmaceutical and packaging applications.

At Promecens, our high-purity chitosan is engineered with customizable molecular weight, so formulators can select the right profile for the job instead of adapting their product to a limited ingredient.

Where high-purity chitosan is used

• Cosmetics: hydrating skincare, anti-aging formulations and natural thickening or stabilizing agents.
• Pharmaceuticals and biomedicine: drug delivery systems, antimicrobial wound dressings and tissue engineering coatings.
• Packaging and food preservation: biodegradable films and natural preservatives that help limit microbial spoilage.
• Environmental technologies: wastewater treatment, heavy metal binding and bio-based coatings.

A sustainable alternative to synthetic polymers, without compromising on performance.

Because chitosan is derived from renewable sources and is biodegradable, it supports circular-economy thinking across industries. Promecens sources its biomaterials from circular Black Soldier Fly biomass and fungal sources such as oyster mushroom, so customers can choose a source that fits their sustainability goals and regulatory needs.