Comp.No.

Inhibition % ± standard deviation

Gram-positive bacteria

Gram-negative bacteria

Staphylococcus aureus

((RCMB 0100010)

Bacillus subtilis

(RCMB 010067)

Pseudomonas aeuroginosa

(RCMB010043)

Escherichia coli

(RCMB 010052)

2

22.63 ± 0.25

52.31 ± 0.37

NA

21.36 ± 0.44

3

86.32 ± 0.44

95.41 ± 0.25

NA

62.31 ± 0.25

6

32.12 ± 0.63

43.25 ± 0.42

NA

22.96 ± 0.16

13

90.31 ± 0.43

96.25 ± 0.53

NA

80.36 ± 0.33

15a

89.35 ± 0.15

94.32 ± 0.42

NA

67.58 ± 0.53

15b

75.44 ± 0.44

85.34 ± 0.58

NA

56.23 ± 0.19

17

72.13 ± 0.44

80.12 ± 0.63

NA

52.34 ± 0.25

20

62.14 ± 0.44

75.24 ± 0.63

NA

42.36 ± 0.25

21

62.14 ± 043

74.32 ± 0.53

NA

42.32 ± 0.25

22

43.12 ± 0.44

51.21 ± 0.25

NA

20.63 ± 0.33

23

76.52 ± 0.2

84.63 ± 0.3

NA

49.32 ± 0.3

Reference drugs

Ampicillin

96.52 ± 0.2

99.65 ± 0.3

Gentamicin

89.23 ± 0.1

82.14 ± 0.3