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Table 2 The profiles of biofilm formation in P. aeruginosa in ½ MIC concentration of GS–Ag-NPs and Ag-NPs (P < 0.05)

From: Effect of glutathione-stabilized silver nanoparticles on expression of las I and las R of the genes in Pseudomonas aeruginosa strains

Isolates Optical density [17] 570nm Optical density [17] 570nm
Treatment Control group Treatment (Ag-NPs) Control group
(GSH–Ag-NPs) Mean ± SD Mean ± SD
P.S*-1 1.12 ± 0.02 3.05 ± 0.084 1.34 ± 0.06 3.05 ± 0.084
P.S -2 1.25 ± 0.05 3.75 ± 0.108 1.45 ± 0.08 3.75 ± 0.108
P. S-3 1.01 ± 0.03 2.89 ± 0.049 1.14 ± 0.04 2.89 ± 0.049
P.S-4 1.43 ± 0.1 3 ± 0.163 1.89 ± 0.12 3 ± 0.163
P.S-5 1.30 ± 0.08 2.90 ± 0.089 1.5 ± 0.08 2.90 ± 0.089
PS-6 0.90 ± 0.09 3 ± 0.143 1.02 ± 0.05 3 ± 0.143
P.S-7 0.63 ± 0.03 3.5 ± 0.301 0.73 ± 0.03 3.5 ± 0.301
P.S-8 0.55 ± 0.04 2.7 ± 0.184 0.65 ± 0.02 2.7 ± 0.184
P.S-9 0.62 ± 0.05 3.12 ± 0.273 0.75 ± 0.04 3.12 ± 0.273
P.S -10 0.76 ± 0.03 3.5 ± 0.187 0.95 ± 0.10 3.5 ± 0.187
P.S-11 0.75 ± 0.04 2.95 ± 0.075 0.84 ± 0.07 2.95 ± 0.075
P.S-12 0.63 ± 0.02 2.77 ± 0.140 0.75 ± 0.02 2.77 ± 0.140
P. aeruginosa PAO1 0.60 ± 0.04 3 ± 0.216 0.85 ± 0.04 3 ± 0.216