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Table 3 Antibacterial activity of A. bracteosa extracts tested against bacterial strains

From: Polarity based characterization of biologically active extracts of Ajuga bracteosa Wall. ex Benth. and RP-HPLC analysis

Extracts

*Diameter of growth inhibition zone at 100 μg/disc (mm)

E. coli

MIC (μg/ml)

S. aureus

MIC (μg/ml)

B. subtilis

MIC (μg/ml)

K. pneumoniae

MIC (μg/ml)

P. aeruginosa

MIC (μg/ml)

Nh

7.33 ± 0.58

–

9.33 ± 0.58

–

8.33 ± 0.58

–

7.33 ± 0.58

–

8.33 ± 0.58

–

Nh-Ea

6.67 ± 0.58

–

7.33 ± 0.58

–

6.67 ± 0.58

–

7.33 ± 0.58

–

7.67 ± 0.58

–

Nh-E

7.33 ± 0.58

–

9.33 ± 0.58

–

7.67 ± 0.58

–

7.33 ± 0.58

–

7.33 ± 0.58

–

C

7.67 ± 0.58

–

8.67 ± 0.58

–

9.33 ± 0.58

–

7.33 ± 0.58

–

7.33 ± 0.58

–

Ea

7.00 ± 1.00

–

6.67 ± 0.58

–

10.67 ± 0.58d

>100

7.33 ± 0.58

–

8.00 ± 1.00

–

C-M

6.67 ± 0.58

–

6.67 ± 0.58

–

8.33 ± 0.58

–

7.33 ± 0.58

–

8.33 ± 0.58

–

Ea-M

6.67 ± 0.58

–

6.67 ± 0.58

–

10.33 ± 0.58d

>100

7.33 ± 0.58

–

9.33 ± 0.58

–

A

6.67 ± 0.58

–

8.33 ± 0.58

–

9.33 ± 0.58

–

7.33 ± 0.58

–

9.33 ± 0.58

–

M

6.33 ± 0.58

–

6.67 ± 0.58

–

16.33 ± 0.58c

100

8.33 ± 0.58

–

7.33 ± 0.58

–

A-M

7.33 ± 0.58

–

7.33 ± 0.58

–

8.67 ± 0.58

–

7.67 ± 0.58

–

8.33 ± 0.58

–

A-E

6.67 ± 0.58

–

7.33 ± 0.58

–

9.33 ± 0.58

–

7.33 ± 0.58

–

7.33 ± 0.58

–

E

6.67 ± 0.58

–

7.33 ± 0.58

–

–

–

7.33 ± 0.58

–

8.33 ± 0.58

–

A-Dw

6.67 ± 0.58

–

6.67 ± 0.58

–

8.66 ± 0.58

–

7.33 ± 0.58

–

9.33 ± 0.58

–

M-Dw

6.67 ± 0.58

–

7.33 ± 0.58

–

7.33 ± 0.58

–

9.33 ± 0.58

–

7.33 ± 0.58

–

Dw

6.67 ± 0.58

–

6.33 ± 0.58

–

8.33 ± 0.58

–

7.67 ± 0.58

–

8 ± 1.00

–

Roxithromycin

25.67 ± 0.58a

0.334

24.33 ± 0.58a

0.334

22.33 ± 0.58a

0.334

23.22 ± 0.58a

0.334

25.67 ± 0.58

0.334

Cefixime

18.33 ± 0.58b

1.11

24.33 ± 0.58a

0.334

18.33 ± 0.58b

1.11

20.33 ± 0.58b

0.334

–

–

DMSO

–

 

–

 

–

 

–

 

–

–

  1. *Zone of inhibition including the diameter of disc (6 mm). Values are presented as mean ± Standard deviation (n = 3). The values with different superscript (a-d) letters show significantly (P < 0.05) different means. --: No activity in disc diffusion assay or not active (zone ≥10 mm) for MIC determination