Is Chitosan Fining vegan?
Depends
Chitosan is usually made from shellfish shells (not vegan), but fungal versions exist.
What it is
Polysaccharide derived from chitin in crab/shrimp shells or from Aspergillus fungi.
Why depends
Source must be confirmed. Crustacean-sourced chitosan is not vegan; fungal chitosan is.
Where you'll find it
- Wine and cider clarification
Vegan alternatives
- Bentonite
- Pea protein
FAQ
- Is shellfish vegan?
- No — shellfish are animals.
Sources
Last reviewed June 4, 2026