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Gum arabic capped copper nanoparticles: Synthesis, characterization, and applications.

Prince Chawla1, Naveen Kumar2, Aarti Bains3

  • 1Shoolini University, Solan, Himachal Pradesh, India.

International Journal of Biological Macromolecules
|January 7, 2020
PubMed
Summary

Gum arabic capped copper nanoparticles exhibit enhanced antibacterial and photocatalytic properties. These nanoparticles are non-toxic to Caco-2 cells, showing potential for various applications.

Keywords:
Copper nanoparticlesCytotoxicityDye reductionGum arabicLSPRZeta potential

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Copper nanoparticles (CuNPs) have diverse applications but require stabilization for optimal performance.
  • Gum arabic, a natural polysaccharide, is explored as a capping agent for nanomaterials.

Purpose of the Study:

  • To synthesize and characterize gum arabic-capped copper nanoparticles (GA-CuNPs).
  • To evaluate the antibacterial, photocatalytic, and cytotoxicity of GA-CuNPs.

Main Methods:

  • Copper nanoparticles synthesized using l-ascorbic acid and capped with 1% gum arabic.
  • Characterization using spectrometric analysis, particle size distribution, zeta potential, EDX, SEM, and TEM.
  • Antibacterial activity assessed against Salmonella typhimurium.
  • Photocatalytic degradation of methylene blue and crystal violet.
  • Cytotoxicity evaluated using Caco-2 cell viability assay.

Main Results:

  • GA-CuNPs exhibited a particle size of 19.60-35.06 nm and enhanced zeta potential.
  • SEM confirmed polygonal prismatic shape, TEM confirmed monodispersed nature.
  • GA-CuNPs showed significant antibacterial activity against Salmonella typhimurium (27 mm zone of inhibition).
  • Achieved 95% degradation of methylene blue and crystal violet within 40 and 20 min, respectively.
  • Both unmodified and GA-CuNPs demonstrated no toxicity to Caco-2 cells.

Conclusions:

  • Gum arabic is an effective capping agent for copper nanoparticles, enhancing their stability and properties.
  • GA-CuNPs display potent antibacterial and photocatalytic activities.
  • The synthesized nanoparticles are non-toxic, suggesting their potential for biomedical and environmental applications.