LAUSR

In the present investigation, zinc oxide nanoparticles (ZnONPs) were synthesized using Peltophorum pterocarpum flower extract and evaluated its antimicrobial and cytotoxic activity. The synthesis of ZnONPs using plant extracts is becoming popular as it is eco-friendly, safe, simple and non-toxic method. Characterization was done by various spectral analyses. UV–visible spectrum showed maximum peak at 380 nm, and crystalline nature was of nanoparticles confirmed by XRD analysis. The average size of nanoparticles was 69.45 nm. The antimicrobial activity was evaluated by agar well diffusion method against pathogenic microorganisms. ZnONPs showed broad spectrum of antimicrobial activity against pathogenic microorganisms. Cytotoxic activity was evaluated by MTT assay against HeLa cancer cell lines. They showed 50% cell viability at $$10~\upmu \hbox {g}/\hbox {ml}$$10μg/ml. The results suggested that synthesized ZnONPs have potential application in various field of medical for treatment of disease.