Comparison of Antibacterial Activity of Green Synthesized Silver Nanoparticles with Different Morphologies, Using MIC Method

Abstract

In this work silver nanoparticles were produced using tannic acid solution as reducing and capping agent. Results of UV-Vis and XRD ensured the existence of silver nanoparticles in the final samples. Nanoparticles with different morphologies were detected using FE-SEM micrographs. The antibacterial activity of the obtained silver nanoparticles was investigated against six bacteria strains (Gram-positive and Gram-negative) using Minimum Inhibitory Concentration (MIC) method. The results of MIC tests for these silver nanoparticles demonstrated the inhibition of growth for most bacteria, including Klebsiella pneumonia, Bacillus subtilis, Acinetobacter baumanii, Escherichia coli and Proteus mirabilis.