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Table 1 Antimicrobial activity of Cu-particles and CuSO4

From: Antimicrobial potential of consolidation polymers loaded with biological copper nanoparticles

Bacterial strains Inhibition zone (mm)
Escherichia coli Pseudomonas aeruginosa Micrococcus luteus Streptomyces parvulus Bacillus subtilis
Streptomycin (0.1 mg/mL) 30 ± 1 28 ± 2 25 ± 2 31 ± 1 27 ± 2
CuSO4 (100 μg/mL) 31 ± 2** 8 ± 2** 17 ± 1** 21 ± 2* 13 ± 1*
CuSO4 (150 μg/mL) 34 ± 1* 9 ± 1** 21 ± 2* 25 ± 1** 18 ± 2**
Cu-particles (100 μg/mL) 37 ± 1** 11 ± 1** 23 ± 1** 24 ± 2* 21 ± 2**
Cu-particles (150 μg/mL) 38 ± 2** 16 ± 2* 29 ± 1** 33 ± 2** 29 ± 1**
Fungal strains Radial diameter (mm)
Aspergillus niger Aspergillus flavus Penicillium chrysogenum Fusarium solani Alternaria solani
Nystatin (0.3 mg/mL) 13 ± 1 11 ± 2 16 ± 2 12 ± 2 18 ± 1
Without copper 28 ± 1 31 ± 1 27 ± 1 28 ± 1 33 ± 1
CuSO4 (150 μg/mL) 19 ± 2* 17 ± 1** 16 ± 1* 21 ± 1** 20 ± 2*
CuSO4 (200 μg/mL) 17 ± 2** 14 ± 1* 13 ± 1** 15 ± 1* 17 ± 2**
Cu-particles (150 μg/mL) 13 ± 1** 11 ± 1** 13 ± 2* 14 ± 1** 15 ± 1**
Cu-particles (200 μg/mL) 11 ± 1* 10 ± 1** 10 ± 2** 10 ± 1** 12 ± 1*
  1. Statistical significance of differences compared to control (without copper): *, significant at P < 0.05; **, significant at P < 0.01
  2. Agar well diffusion method was used to assay antibacterial activity meanwhile antifungal activity was measured using fungal growth inhibition assay. The values are means of three replicates ± standard error