Abstract
Green synthesis nanoparticles are considered as an alternative effective resource instead of chemical engineered nanoparticles. Using seed extract for green synthesis, essential for the reduction and oxidation process of the metals. Rauvolfia tetraphylla (L.) seed extract was used to synthesize dark brown colored silver (Ag) and white colored zinc oxide (ZnO) nanoparticles. Synthesized nanoparticles were characterized by different spectroscopic analysis (XRD, XPS, and SEM with EDAX). Characterization results confirmed the particle morphology, and structure. The synthesized Ag and ZnO NPs were analyzed against two gram positive and three gram negative bacteria. Increased levels of green synthesized Ag and ZnO NPs showed increased zone of inhibition than compared with ciprofloxacin (positive control). Our study proved that the green synthesized Ag and ZnO NPs showed similar unique physical and chemical properties with composite/doped metal oxide nanoparticles but less toxic while their discharge into the ecosystem.
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