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Table 5 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 nutrient 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

255 ± 13

158 ± 7

18 ± 7

10

111 ± 9

81 ± 10

6 ± 2

50

194 ± 11

65 ± 9

3 ± 1

50

43 ± 13

26 ± 8

0

100

95 ± 9

10 ± 6

0

100

4 ± 1

3 ± 2

0

200

93 ± 13

0

0

200

0

0

0

300

53 ± 10

0

0

300

0

0

0

  1. Measured by treating smaller GO sheets and GO-based materials (up to 10 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)