Antibacterial Activity of Murrayaquinone A and 6-Methoxy-3,7-dimethyl-2,3-dihydro-1H-carbazole-1,4(9H)-dione

Table 2

Result of antimicrobial activity assay by agar well diffusion method.

Compound tested

E. coli

B. subtilis

S. aureus

P. sp.

A

B

C

A

B

C

A

B

C

A

B

C

20

18

18

−ve

−ve

−ve

22

22

21

−ve

−ve

−ve

−ve

−ve

−ve

−ve

−ve

−ve

25

25

23

−ve

−ve

−ve

Concentrations: A = 2560 𝜇g mL⁻¹; B = 1280 𝜇g mL⁻¹; C = 640 𝜇g mL⁻¹. Zone of inhibition given in mm (diameter). −ve: no inhibitory activity.