Figure 1.

Impact of CuO NMs on bacterial growth (OD Measurement). Bacterial growth curves of (A) E. coli (B) S. aureus (C) B. subtilis and (D) P. aeruginosa following exposure to CuO NMs at concentrations ranging from 12.5 to 200 µg/mL for 24 h. Bacteria were also exposed to 100 µg/mL gentamicin (positive control) or incubated in MHB (negative control). OD measurements were made at 600 nm. These data represent the mean OD ± SD of three independent experiments done in triplicate. An ANOVA with a post hoc Tukey test was performed, with significant findings indicated by **: p ≤ 0.01, compared to the control.