copper nanoparticles synthesized using echinops sp. root extract for antimicrobial applications

Metallic nanoparticles synthesized using a green synthetic route has been found to be harmful to pathogens. an attempt was made to synthesize copper nanoparticles (ecs-cu nps) using the root extract of echinops sp., ethiopian medicinal plant. the most advanced techniques were employed to characterize nps. the presence of the highest absorbance at λmax =454 nm confirms the formation of ecs-cu nps. the role of biomolecules as capping agents for ecs-cu nps was authenticated by ft-ir spectra. the presence of a single weak peak in the xrd pattern of nps confirmed the amorphous nature of the nps. the purity of the nps was corroborated by the sem-edax analysis. tem-hrtem-saed analysis authenticated the presence of partially crystalline natured copper nps with the appearance of weak concentric saed rings. the ecs-cu nps showed significant synergistic antibacterial influence verses s. aureus, e. coli, p. aeruginosa, and e. aerogenes. the uppermost inhibition zone of 13 mm was inscribed against s. aureus bacteria. ecs-cu nps exhibited better antibacterial activities against gram positive and gram negative bacteria.