Table 4 The zone of inhibition of chitosan, ZnO NPs, chitosan–ZnO NPs, and Chitosan–ZnO/PVP at different doses against the studied bacteria strains.

From: Introducing the antibacterial and photocatalytic degradation potentials of biosynthesized chitosan, chitosan–ZnO, and chitosan–ZnO/PVP nanoparticles

Sample

Zone of inhibition (mm)

Conc (mg/ml)

Gram-positive

Gram-negative

Bacillus subtilis

Staphulococcus Aureus

Pseudomonas aeruginosa

Salmonella Typhimuruim

ZnO NPs

0.2

14 ± 0.25

17 ± 0.33

13 ± 0.13

12 ± 0.25

0.4

16 ± 0.21

18 ± 0.25

14 ± 0.54

13 ± 0.25

0.6

17 ± 0.33

19 ± 0.25

15 ± 0.21

15 ± 0.15

Chitosan–ZnO NPs

0.2

14 ± 0.25

21 ± 0.15

14 ± 0.75

15 ± 0.33

0.4

21 ± 0.30

23 ± 0.66

16 ± 0.34

17 ± 0.66

0.6

21 ± 0.30

24 ± 0.80

18 ± 0.63

19 ± 0.21

Chitosan–ZnO/PVP

0.2

20 ± 0.39

22 ± 0.34

16 ± 0.23

18 ± 0.67

0.4

21 ± 0.21

23 ± 0.25

18 ± 0.44

19 ± 0.33

0.6

22 ± 0.34

25 ± 0.21

19 ± 0.21

22 ± 0.39

Ciprofloxacin (CIP-5)

0.2

21 ± 0.15

21 ± 0.30

18 ± 0.25

18 ± 0.33

0.4

22 ± 0.21

23 ± 0.13

20 ± 0.25

21 ± 0.17

0.6

22 ± 0.73

25 ± 0.33

22 ± 0.67

24 ± 0.14

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