Zone of Inhibition in Mean ± STD µg/ml

Isolates

Extract-Fractions

Standard

Bacterial strains

Methanol

n-Hexane

Chloroform

Ethylacetate

n-butanol

Water

Az

Tetra

B. atrophoeus

14.0 ± 0.5

10.7 ± 1.0

22.1 ± 0.1

17.7 ± 1.4

20.2 ± 0.2

16 ± 1.0

24 ± 0

25 ± 0

Bacillus subtlilis

15.3 ± 0.5

09.0 ± 1.8

17.3 ± 1.5

12.7 ± 1.3

18 ± 1.0

16 ± 1.0

21 ± 1

23 ± 0

K. pneumonia

13.3 ± 1.3

12.2 ± 1.0

14.2 ± 1.0

12.7 ± 1.5

16 ± 1.0

0 9 ± 1.0

21 ± 1

23 ± 0

P. aeruginosa

07.9 ± 0.1

12.7 ± 0.0

10.0 ± 1.0

14.7 ± 1.5

15 ± 1.5

00 ± 00

20 ± .0

19 ± 0