assessment of antibacterial, antioxidant, and catalytic activity of zinc oxide nanoparticles biosynthesized by pistacia vera soft waste peel extract

The green synthesis of metal oxide nanoparticles using plant extracts can effectively replace traditional chemical synthesis methods. in present paper, we describe the formation of zinc oxide (zno) nanoparticles (nps) using pistacia vera soft peel extract. synthesis of plant-based nanoparticles possesses numerous advantages compared to the conventional physicochemical approaches with different applications in biology and medicine. in the present study pistacia vera peel extract was used to synthesize zno nps. to investigate the optical and structural features of zno nanoparticles synthesized by pistacia vera peel extract, x-ray diffraction (xrd), fourier transform infrared (ftir) spectroscopy, ultraviolet-visible spectrophotometer (uv-vis), and scanning electron microscope (sem) were used. the off-yellow hue of the reaction mixture indicated that zno nps were formed. the presence of pistacia vera peel extract-mediated zno nps was revealed by uv-visible peaks at 422 nm. in addition, an xrd pattern confirmed the formation of spherical structure nanomaterials with an average size of 42 nm along with the xrd pattern matching the jcpds card. the existence of bioactive functional groups effective in reducing the bulk of zinc sulfate to zno nps was further confirmed by ftir. the sem images revealed the spherical shape, and the size of nanoparticles, which was within the range of 31.14 to 48 nm. to examine the antibacterial potential of zno nps, a paper disc diffusion technique was used against gram-negative escherichia coli and gram-positive staphylococcus aureus clinical strains in terms of the inhibition zone. in addition, the radical scavenging assay was done by the dpph test. the green synthesized pistacia peel extract-mediated zno nps demonstrate striking antioxidative activity at 100 μg ml–1. using nabh4, nanoscale zinc oxide can remove methylene blue in only 150 seconds. furthermore, they remove 98% of methylene blue in 14 minutes under uv light.