Isolates/Zone of inhibition (mm)

Stem bark extracts

Conc. (mg/ml)

E. coli

S. typhi

S. aureus

Proteus sp

ASE

50

11.6

10.2

12.0

9.0

100

12.0

11.8

12.8

9.8

150

12.8

12.0

13.6

10.4

200

13.8

13.7

14.1

13.6

MSE

50

12.8

12.0

12.9

9.9

100

13.4

14.9

15.2

12.7

150

18.9

17.4

19.8

16.0

200

21.6

19.0

22.3

17.4

100

17.4

15.0

21.7

13.1