Sample

b

c

d

b

c

d

b

c

d

b

c

d

Blank

Dose, µL

25

50

100

200

−ve ZOI

+ve ZOI

Micro organism

Zone of inhibition*

E. Coli

0

0

0

11.40

17.53

16.65

22.51

22.35

18.2

26.2

28.6

32.3

0

22.75

K. Pneumoniae

11.55

12.61

13.05

22.7

20.12

21.4

22.52

16.92

20.11

34.17

23.07

25.19

0

20.61

B. Cereus

0

12.37

12.61

17.72

17.26

16.25

20.34

26.64

24.93

23.34

26.86

27.17

0

25.5

S. Aureus

0

12.57

11.68

15.1

18.29

18.64

18.17

16.47

17.36

21.56

26.93

20.87

0

27.44

C. lbicans

0

0

11.05

12.34

13.11

14.11

16.39

13.14

13.83

25.48

26.69

27.95

0

0

Aspergillus

0

0

0

13.22

14.62

16.32

16.05

18.18

16.52

25.28

22.54

21.4

0

0