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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