Antimicrobial Activity of ZnO Nanoparticles Against Gram Positive & Negative Bacterial Strains

Author(s)	Dr. Ajay Kumar, Dr. Vikash Vikash, Mr. Deepak Kumar
Country	India
Abstract	Zinc oxide nanoparticles (ZnO NPs), common antimicrobials with an unclear action mechanism, were studied for their concentration-dependent efficacy against Gram-negative Pseudomonas aeruginosa and Gram-positive Enterococcus faecalis . Pre-synthesized ZnO NPs of varying sizes were characterized using techniques like X-ray Diffraction, FT-IR Spectroscopy, and Transmission Electron Microscopy. The minimum inhibitory concentration (MIC) was determined via the standard micro-dilution method using Mueller Hinton broth cultures. Antimicrobial results confirmed that the tested ZnO NPs showed no antimicrobial activity against either Pseudomonas aeruginosa or Enterococcus faecalis.
Keywords	ZnO nanoparticles, Antimicrobial efficacy, Pseudomonas aeroginosa, Enterococcus faecalis
Field	Chemistry
Published In	Volume 8, Issue 1, January-February 2026
Published On	2026-02-13

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