Abstract
In this study, we investigated the antimicrobial activity of silver nanoparticles (Ag-NPs) and platinum nanoparticles (Pt-NPs) aqueous solution, which were prepared using different stabilizer, such as sodium dodecylsulfate (SDS) and poly-(
N-vinyl-2-pyrrolidone) (PVP), for
Staphylococcus aureus (
S. aureus) and
Escherichia coli (
E.coli) by measuring the minimum inhibitory concentration (MIC). Antimicrobial effect of Ag-NPs for
S. aureus and
E. coli was investigated using cup diffusion method. The growth of Gram-positive (
S. aureus) and Gram-negative (
E. coli) bacteria were inhibited by Ag-NPs. The MIC of Ag-NPs for
S. aureus and
E. coli were 5 and 10
ppm, respectively. But the Au-NPs stabilized with SDS did not show antimicrobial activity. Also, the Pt-NPs stabilized with PVP (or SDS) did not show antimicrobial activity for the test organisms.