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Table 2 Activity of (A) Q. dilatata against six bacterial strains

From: Isolation of antibacterial compounds from Quercus dilatata L. through bioassay guided fractionation

 

Zone of inhibition (mm) ± S.E

Conc

E. coli

S. aur

B. sub

M. leu

B. Bro

S. setubal

1

9.3 ± 0.333

9.7 ± 0.33

9.7 ± 0.33

10.2 ± 0.34

11.2 ± 0.17

9.3 ± 0.33

2

11.1 ± 0.1

11.3 ± 0.67

11.3 ± 0.88

11.5 ± 0.53

12.8 ± 0.44

11.5 ± 0.76

5

12.4 ± 0.21

13.3 ± 0.67

13.5 ± 0.79

12.9opqrst ± 0.95

15.7efghij ± 1.03

13opqrs ± 0.78

7

13.6 ± 0.09

15.2 ± 0.83

13.7 ± 0.33

13.6lmnopqrs ± 0.83

16.8defgh ± 1.2

13.6lmnopqrs ± 0.8

10

14.7 ± 0.15

16.2 ± 0.83

14.5 ± 0.47

14.9ghijklmno ± 0.95

18cd ± 1.73

14.2ijklmnopq ± 0.77

15

15.4 ± 0.15

17.2 ± 0.8

15.7 ± 0.67

15.2efghijklm ± 0.83

19.8bc ± 1.17

15.1fghijklmn ± 0.87

20

16.3 ± 0.15

18.9 ± 1.1

17.2 ± 0.83

16.4defgh ± 0.75

21.5ab ± 1.47

16.2defghi ± 0.97

25

17 ± 0.26

19.8 ± 1.2

18 ± 1

17def ± 0.82

22.7a ± 1.73

17.1def ± 1.05

R

15.3 ± 0.88

27.1 ± 0.93

11.7 ± 0.33

11.5 ± 0.29

33 ± 1

11.7 ± 0.57

C

35.2 ± 0.44

38.6 ± 3.4

33.3 ± 0.33

31.8 ± 1.32

20.3 ± 0.33

32.5 ± 0.79

E. coli:-

Escherichia coli

B. sub:-

Bacillus subtillus

B. bron:-

Bordetella bronchiseptica

S. aur:-

Staphylococcus aureus

M. leu:-

Micrococcus luteus

S. set:-

Salmonella setuball

C

Cefixime

R

Roxithromycin

Conc

Concentrations

  1. The data represents the mean values of three replicates ± represents standard deviation.
  2. Letters ranging from d to w indicate respective Least Significant Difference rank orders of mean values. Values with similar letters are not significantly different from each other at p > 0.05.