Number of commercial and possible biomedical uses. Seed treatment and biopesticide, helping plants to
fight off fungal infections. In winemaking it can be used as a fining
agent, also helping to prevent spoilage. In industry, it can be used in a
self-healing polyurethane paint coating. In medicine, it may be useful
in bandages to reduce bleeding and as an antibacterial agent; it can
also be used to help deliver drugs through the skin.
More controversially, chitosan has been asserted to have use in
limiting fat absorption, which would make it useful for dieting, but
there is evidence against this.