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Table 2 Bacterial viability

From: Graphene oxide conjugated with polymers: a study of culture condition to determine whether a bacterial growth stimulant or an antimicrobial agent?

Incubate with MB medium Incubate with PBS buffer
Concentration (μg/mL) Viability (%) with treatment of GO Viability (%) with treatment of GO-POAA Viability (%) with treatment of GO-chitosan Concentration (μg/mL) Viability (%) with treatment of GO Viability (%) with treatment of GO-POAA Viability (%) with treatment of GO-chitosan
10 214 ± 10 132 ± 13 36 ± 11 10 104 ± 7 98 ± 12 18 ± 10
50 152 ± 13 96 ± 12 8 ± 6 50 73 ± 10 53 ± 9 0
100 104 ± 6 30 ± 8 0 100 11 ± 8 5 ± 2 0
200 95 ± 12 0 0 200 0 0 0
300 71 ± 9 0 0 300 0 0 0
  1. Measured by treating GO and GO-based materials (up to 20 μm wide) with E. coli. 10–300 μg mL−1 of materials were treated with E. coli. After 3 h incubation with nutrient medium or PBS, respectively, the CFU counting method was used. The number of surviving bacteria was determined and is expressed as a percentage (%) that corresponds to the unit of CFU mL−1. Data are mean ± SD (n = 6)