Skip to main content

Table 3 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
10 278 ± 14 189 ± 9 26 ± 12 10 112 ± 15 68 ± 12 13 ± 5
50 223 ± 15 72 ± 13 7 ± 3 50 40 ± 7 19 ± 4 0
100 96 ± 12 18 ± 7 0 100 3 ± 1 2 ± 1 0
200 87 ± 10 6 ± 2 0 200 0 0 0
300 45 ± 8 0 0 300 0 0 0
  1. Measured by treating GO sheets and GO-based materials (up to 20 μm wide) with B. subtilis. 10–300 μg mL−1 of materials were treated with B. subtilis. 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)