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Nanoparticle-Functionalized Cellulose Through Biosynthesis-Only Approach.

Chunyu Ji1,2, Ting Wang1,2, Yifeng Wang1,2

  • 1School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.

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|September 12, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel biosynthesis method to incorporate glucose-modified carbon dots (Glu-CDs) into bacterial cellulose (BC) chains. This microbial process creates unique functional nanoparticle-cellulose composites, overcoming limitations of traditional methods.

Keywords:
bacterial cellulosebiosynthesiscarbon dotsfluorescencenanoparticles

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Microbiology

Background:

  • Bacterial cellulose (BC) is a natural polymer with versatile applications.
  • Carbon dots (CDs) are biocompatible nanoparticles with unique optical properties.
  • Traditional methods for functionalizing BC have limitations, including poor functional group stability and environmental concerns.

Purpose of the Study:

  • To introduce a novel biosynthesis method for incorporating nanoparticles into cellulose chains.
  • To create functional nanoparticle-living organism composites using microbial fermentation.
  • To overcome drawbacks associated with conventional physical and chemical functionalization techniques.

Main Methods:

  • Biosynthesis of glucose-modified carbon dots (Glu-CDs) integrated into bacterial cellulose (BC) chains via microbial fermentation.
  • Utilizing BC synthases for biochemical incorporation of nanoparticles, forming covalent bonds.
  • Characterization of the resulting Glu-CDs functionalized BC (Glu-CDs-BC) for structural, optical, and thermal properties.

Main Results:

  • Successful in situ functionalization of cellulose with nanoparticles through microbial biosynthesis.
  • Glu-CDs-BC exhibits distinct cyan fluorescence and altered micro-structures with protrusions on cellulose nanofibers.
  • Reduced crystallinity and thermal stability in Glu-CDs-BC compared to pristine BC, demonstrating effective integration beyond physical attachment.

Conclusions:

  • This study pioneers the biochemical incorporation of nanoparticles into cellulose chains using microbial systems.
  • The developed biosynthesis method offers an environmentally friendly alternative to traditional functionalization techniques.
  • This approach opens new avenues for creating advanced functional nanoparticle-living organism composites.