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ENTITY: Enzymatic modification of lignin-carbohydrate hybrids

Covalent cross-links between lignin and hemicelluloses in lignin-carbohydrate complexes (LCCs), restrict their separation in biomass fractionation. In material perspective, the LCCs are natural and biodegradable hybrid molecules having a block co-polymer type of structure, containing hydrophobic lignin domain interlinked with hydrophilic hemicellulose domain. The project ENTITY utilizes and studies enzymatic catalysis, versatile analytical methods and computational modelling to isolate, characterize and tailor the LCCs for material applications benefiting from the joint functional properties of polyphenolic and hemicellulosic domains of LCCs.

Main results

  • Enzymatic approach was adopted for fractionation of spruce wood analysis

  • Molecular modelling revealed that structure of lignin hemicellulose complexes can affect their interaction with water and cellulose

  • Testing of enzymatic treatments with spruce extracts ongoing

Research Project Managers

Maria Sammalkorpi, Aalto

Emma Master, Aalto

Kaisa Marjamaa, VTT

Project status

Funded by FinnCERES in 2022. Related work dealing with adsorption on cellulose-based surfaceshas was funded by Business Finland.

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