Enzyme-Enhanced Manufacturing of Cationized Dialdehyde Cellulose.
Mozhgan Hashemzehi1, Helena Håkansson1, Gunilla Carlsson Kvarnlöf1
1Department of Engineering and Chemical Science, Karlstad University, Universitetsgatan 2, 65188 Karlstad, Sweden.
Biomacromolecules
|August 15, 2025
Summary
Enzymatic pretreatment enhances cellulose accessibility for producing cationized dialdehyde cellulose (CDAC). This method boosts fiber reactivity, leading to improved product quality and more sustainable manufacturing of cellulose derivatives.
Area of Science:
- Biotechnology
- Materials Science
- Chemical Engineering
Background:
- Cellulose accessibility is crucial for high-quality cellulose derivative manufacturing.
- Enzymatic treatments can modify cellulose structure and reactivity.
- Cationized dialdehyde cellulose (CDAC) production requires accessible hydroxyl groups.
Purpose of the Study:
- To investigate the effect of endoglucanase enzyme pretreatment on cellulose accessibility.
- To enhance the production of cationized dialdehyde cellulose (CDAC).
- To evaluate the impact of enzymatic treatment on the swelling behavior and surface charge density of CDAC.
Main Methods:
- Cellulose pulp was pretreated with endoglucanase enzyme at various dosages (0.09-45.00 ECU/g).
- Pretreated cellulose underwent cationization and dialdehyde modification.
- Swelling behavior and surface charge density of the resulting CDAC were analyzed.
Main Results:
- Enzymatic pretreatment significantly increased cellulose accessibility.
- The surface charge density of CDAC increased by 35% compared to untreated pulp.
- The modified cellulose exhibited enhanced swelling capacity.
Conclusions:
- Enzymatic pretreatment is an effective strategy to improve cellulose reactivity for CDAC production.
- This approach offers a more sustainable and efficient route for manufacturing cellulose derivatives.
- The findings indicate strong potential for commercial applications of enzymatically modified cellulose.
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