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Crystalline Xylan: A Rising Star in Carbohydrate Materials
Zijun Mao1,2, Qiang Xia1,2, Yuanting Dai1,2
1Beijing Key Laboratory of Lignocellulosic Chemistry, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing100083, China.
Biomacromolecules
|July 13, 2026
Summary
Crystalline xylan, a pentose-based polysaccharide, is an emerging renewable resource. Recent advances focus on its structure, preparation, and conversion into xylan nanocrystals for various applications.
Area of Science:
- Polymer Science
- Materials Science
- Biochemistry
Background:
- Carbohydrates are valuable renewable resources due to their unique semicrystalline structures.
- Hexose-based polysaccharides like cellulose are well-studied, but pentose-based crystalline xylan is underexplored.
- Xylan's crystalline form, distinct from amorphous hemicelluloses, arises from reduced substitution and enhanced backbone regularity.
Purpose of the Study:
- To review recent advancements in crystalline xylan.
- To cover molecular/crystal structures, water-dependent behavior, sources, and preparation.
- To emphasize conversion into xylan nanocrystals and their applications.
Main Methods:
- Summarizing recent research on crystalline xylan structure and properties.
- Detailing top-down and bottom-up methods for xylan nanocrystal production.
- Analyzing the link between processing, nanoscale morphology, and colloidal stability.
Main Results:
- Crystalline xylan exhibits unique structural and functional properties.
- Effective strategies for preparing crystalline xylan and xylan nanocrystals have been developed.
- Processing methods significantly influence nanoscale morphology and colloidal stability.
Conclusions:
- Crystalline xylan is a promising renewable macromolecular resource.
- Xylan nanocrystals show potential in optical materials, dispersants, gels, and plastics.
- Further research is needed to address challenges and explore future opportunities.
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