Grey (Dutch) shrimps provide chitosan for food and feed applications

Chitin is the second most abundant natural carbohydrate biopolymer globally, trailing only cellulose. It is found in crustaceans, insects, and fungi. Chitosan, a derivative of chitin, holds vast potential across various applications. It is most efficiently produced from chitin sourced from crustacean skeletons, such as shrimp. Annually, the Netherlands harvests approximately 25-30 kT of grey shrimp, with over 90% of it being transported to Morocco for peeling. Following peeling, about two-thirds of the shrimp remains, suitable for chitin/chitosan extraction. However, currently, a significant portion of this material is currently relegated to landfill.

In this project, we explore a circular approach to processing grey shrimp in the Netherlands. This approach encompasses automated peeling, a more sustainable chitin/chitosan extraction process utilizing enzymes, and reduced salt production. Moreover, in collaboration with end-users, new applications in food and feed sectors will be developed for the extracted chitosan. Wageningen Food & Biobased Research, Ruitenberg Ingredients B.V., Agrifirm, and GPC Kant have united to develop a circular shrimp processing system in the Netherlands.