Journal of Nanomaterials

Research Article

The Effect of Charge at the Surface of Silver Nanoparticles on Antimicrobial Activity against Gram-Positive and Gram-Negative Bacteria: A Preliminary Study

Table 1

The minimum inhibitory concentration values (mol/L) of different AgNPs against the examined bacterial species (ND: not determined).
Bacterial species Positively charged AgNPsNeutral AgNPsNegatively charged AgNPs
Staphylococcus aureus 5.7 × 10−124 × 10−99.7 × 10−8
Escherichia coli 5.7 × 10−124 × 10−10ND
Streptococcus mutans 5.7 × 10−114 × 10−8ND
Streptococcus pyogenes 5.7 × 10−104 × 10−8ND
Proteus vulgaris 5.7 × 10−8NDND