Antibacterial Activity of Coumarins and Carbazole Alkaloid from Roots of Clausena anisata

Table 6

Zone of bacterial growth inhibition (mm) for crude extract and isolated compounds.

Sample	E. coli	S. aureus	B. substilis	P. aeruginosa
CH2Cl2/MeOH extract	9 ± 0.1	11 ± 0.1	10 ± 0.1	8 ± 0.1
MeOH extract	n	12 ± 0.2	13 ± 0.3	9 ± 0.2
1	n	14 ± 0.1	12 ± 0.1	12 ± 0.1
3	n	13 ± 0.1	14 ± 0.1	14 ± 0.1
4	n	14 ± 0.2	16 ± 0.3	12 ± 0.2
Ciprofloxacin	14 ± 0.1	15 ± 0.3	15 ± 0.3	15 ± 0.3

n ≤ 6 is null, and n > 6 is sensitive.