Table 3 Minimum inhibitory concentrations of Amp-AgNps for 15 successive cycles against different bacterial strains.

From: Ampicillin Silver Nanoformulations against Multidrug resistant bacteria

Strain

MIC90 (µg/ml)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

E. coli

18.75

18.75

17.8

18.55

17.67

18.75

18.75

18.2

18

18.34

18.25

18

18.25

18.25

18

S. aureaus

9.375

9

9.25

8.95

9.23

8.75

9

9

9.25

9.25

9

9.3

9

9

9.25

Ampicillin Resistant E. coli

10

10

10

10.4

9.8

9.25

10

10.25

9.85

9.4

10

10.4

9.8

10

10

Ampicillin Resistant S. aureus

3

2.75

3

3.32

3

3.35

3

2.75

3.5

3.2

3.2

3

3

3.2

3

K. pneumonia (MDR)

28

28.12

28.12

28

28.2

28.2

28.45

28

28

28.12

28.12

28

28

28.12

28

P. aerigunosa (MDR)

20

20.4

20.67

19.43

20

20

20.89

20

20.4

19.25

19.43

20

19

20.4

20