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Table 2 Table showing mean diameter of zones of inhibition, Minimum inhibitory concentration (MIC) and Fractional Inhibitory Concentration Index (FICI) of plant extract combinations against Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus and Methicillin Resistant Staphylococcus aureus

From: Evaluation of the antibacterial activity of selected Kenyan medicinal plant extract combinations against clinically important bacteria

 

Pseudomonas aeruginosa

Klebsiella pneumoniae

Escherichia coli

Staphylococcus aureus

Methicillin Resistant Staphylococcus aureus

EXTRACT (100 mg/ ml)

DZI* (mm) ± SD

MIC (µg/well)

Σ FICI

DZI* (mm) ± SD

MIC (µg/well)

Σ FICI

DZI* (mm) ± SD

MIC (µg/well)

Σ FICI

DZI* (mm) ± SD

MIC (µg/well)

Σ FICI

DZI* (mm) ± SD

MIC (µg/well)

Σ FICI

Camelia MeOH/Senna MeOH

27.22 ± 0.41

156.25

1.0 **

14.93 ± 0.35

1250

0.375 *

14.02 ± 0.03

625

0.188 *

16.43 ± 0.10

1250

1.25***

19.91 ± 0.31

1250

0.5625 *

Camelia MeOH/Aloe MeOH

22.07 ± 0.38

312.5

1.1***

14.19

2500

1.0 **

14.17 ± 0.22

2500

0.75 **

14.72 ± 0.34

2500

2.25***

16.24 ± 0.22

1250

1.125***

Camelia MeOH/Toddalia MeOH

18.35 ± 0.22

625

2.1***

13.72 ± 0.16

2500

1.0 **

10.48 ± 0.17

ND

ND

14.43 ± 0.12

2500

2.5***

17.06 ± 0.41

1250

1.5***

Camelia MeOH/Toddalia DCM

19.03 ± 0.46

625

2.5***

13.51 ± 0.10

ND

ND

10.05 ± 0.01

ND

ND

13.49 ± 0.23

ND

ND

16.28 ± 0.32

1250

1.25***

Senna DCM/Toddalia DCM

ND

ND

ND

12.77 ± 0.01

ND

ND

ND

ND

ND

14.33 ± 0.16

ND

ND

10.70 ± 0.06

ND

ND

Camelia H2O/Senna H2O

22.22 ± 0.15

156.25

0.5625 *

10.36 ± 0.10

ND

ND

10.15 ± 0.04

ND

ND

14.1 ± 0.02

10,000

5****

13.96 ± 0.24

1250

0.625 **

DMSO

0.00

  

0.00

  

0.00

  

0.00

  

0.00

  

Gentamycin sulphate (0.3 mg/ml)

23.24 ± 0.20

4.375

 

14.00 ± 0.02

8.75

 

16.02 ± 0.08

8.75

       

Mupirocin (0.1 mg/ml)

         

25.92 ± 0.23

2.315

 

25.9 ± 0.10

2.315

ND

  1. *Synergy ** Additive ***Indifferent ****Antagonism