Screening of Preliminary Phytochemicals, Molecular Identification, and Antimicrobial and Anti-Inflammatory Activity of Justicia gendarussa

Table 3

Antibacterial activity of J. gendarussa leaves extracts compared to the standard antibiotic gentamycin (10 μg/disc) that is used as a positive control. Diameter of zone of inhibition (in mm). Each disc = 6 mm.

Test organisms (100 μg/disc)	Positive control (gentamycin)	Negative control (DMSO)	Methanolic extract	Ethanolic extract	Aqueous extract	Diethyl ether extract	Dichloromethane	Ethyl acetate
Staphylococcus aureus	17	−	11	12	16	10	8	7
Bacillus subtilis	16	−	13	12	14	9	7	8
Bacillus cereus	15	−	10	11	13	9	11	10
Escherichia coli	16	−	13	12	14	8	9	7
Shigella flexneri	17	−	10	13	15	9	8	6
Salmonella typhi	17	−	11	10	12	7	7	8
Klebsiella pneumoniae	18	−	12	11	12	6	8	9
Proteus spp.	15	−	10	9	10	7	6	7