Figure 4
From: Salvadora persica mediated synthesis of silver nanoparticles and their antimicrobial efficacy
Antibacterial effect of SpNPs on E. coli and S. epidermidis. Antimicrobial analysis was performed by using disc diffusion and well diffusion methods on nutrient agar plates (a). Four samples were used i.e. (1) 20 µl of AgNO3 (10 mM), (2) 20 µg SpNPs (Z1), (3) 40 µg SpNPs (Z2) and (4) 20 µl of S. persica (10%) extract. Chloramphenicol was used as a positive control in all experiments in the center of the well plate. Inhibition zones around samples are encircled. The zones of inhibition were calculated by using a scale in mm and their mean value is represented by bar plots and standard deviation as error bars. ZOI for disc diffusion method for all samples are shown in (b) and ZOI for well diffusion are shown in (c). All experiments were performed in triplicates.
