Biosynthesis and Antibacterial Effect of Zinc Oxide Nanoparticles Using Aloe Vera Latex Extract

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Researchers from the University of Cadi Ayyad have successfully developed an environmentally friendly method for synthesizing zinc oxide (ZnO) nanoparticles using Aloe vera latex extract. The approach involves using different temperatures, namely room temperature, 50 degrees C, and 100 degrees C, to produce ZnO nanoparticles with varying sizes. The synthesized nanoparticles were characterized using various spectroscopic techniques and showed promising antibacterial activity against four bacteria species. Notably, the nanoparticles synthesized at 50 degrees C demonstrated the highest activity against E. coli, P. aeruginosa, S. aureus, and E. faecalis with minimum inhibitory concentrations (MIC) of 0.16, 0.63, 0.08, and 0.08 mg/mL, respectively.

Key Takeaways:

  • The researchers employed an environmentally friendly process using Aloe vera latex extract to synthesize ZnO nanoparticles at three different temperatures.
  • The synthesized nanoparticles were characterized using XRD, UV-Vis, FT-IR, and SEM-EDX, which confirmed their hexagonal shape, absorption band, and nanostructure size.
  • The antibacterial activity of the synthesized ZnO nanoparticles was evaluated against four bacteria species: E. coli, P. aeruginosa, S. aureus, and E. faecalis.
  • The nanoparticles synthesized at 50 degrees C showed the highest antibacterial activity against the four bacteria species, with MIC values ranging from 0.08 to 0.63 mg/mL.
  • The study concluded that the biosynthesis method using Aloe vera latex extract is a viable approach for producing ZnO nanoparticles with potential antibacterial applications.

Statistics:

  • The size of the synthesized ZnO nanoparticles ranged from 19.89 ± 3.76 nm to 21.37 ± 5.43 nm.
  • The minimum inhibitory concentrations (MIC) values for the nanoparticles synthesized at 50 degrees C were: 0.16 mg/mL (E. coli), 0.63 mg/mL (P. aeruginosa), 0.08 mg/mL (S. aureus), and 0.08 mg/mL (E. faecalis).
  • The study reported a successful biosynthesis of ZnO nanoparticles using Aloe vera latex extract with varying sizes and antibacterial activity.

Sources:

  • Study On the Biosynthesis and Antibacterial Effect of Zinc Oxide Nanoparticles Using Aloe Vera Latex Extract. Chemical Papers, 2025.
  • NewsRx. University of Cadi Ayyad Details Findings in Nanoparticles (Study On the Biosynthesis and Antibacterial Effect of Zinc Oxide Nanoparticles Using Aloe Vera Latex Extract). Health & Medicine Week. July 11, 2025; p 8110.