Targeted Modification Of Xylan and Other Polysaccharides

An efficient extraction process is only one component in developing value-added products from polysaccharides. In many cases further treatment of the polymer is required in order to confer the physical and chemical properties that are required for the desired application/market. Such properties that can be influences with these modifications include the the rheology and water-resistance of the polymers.

At Celignis we also have extensive experience in such modifications using both enzymatic and chemical approaches. For example, in the Horizon Europe project EnXylaScope we are active in the discovery and application of enzymes for the debranching of xylan and for its subsequent modification for additional functionalities. In the CBE/BBI project PERFECOAT the focus is on the chemical modification of xylan in order to enhance its properties for application as a binder in paints and coatings.

In PERFECOAT we are also working on the extraction and modification of chitosan, from prawn shells, whilst we have also internally worked on processes focused on the extraction and modification of pectin. Additionally, as outlined in the video below, we have developed processes for the modification of seaweed-derived alginate to confer the desired physicochemical properties

The ability to selectively and cost-effectively modify polymers is a key component of many topics in the CBE-JU 2022 Work Programme, in particular JU-CBE-2022-R-01 (High performance bio-based polymers for market applications with stringent requirements) and JU-CBE-2022-R-02 (Bio-based coatings, barriers, binders, and adhesives).