Identification of Potent Bioassay Guided Terpenoid and Glycoside Root Fractions of Astragalus candolleanus against Clinically Significant Bacterial Strains

Table 2

Antibacterial activity of A. candolleanus root extract and standard gentamycin (diameter inhibition zone expressed in mm).

Bacterial strains	DMSO	A. candolleanus extract (µg/mL)					Gentamycin (µg/mL)
		5	10	20	40	80	5	10	20	40
E. coli ATCC 9637	0	21.2	22.7	23.5	24.2	25.4	11.6	12.6	13.2	14.8
K. pneumoniae ATCC 10031	0	19.7	21.8	—	—	—	12.6	12.9	16.7	21.5
S. typhimurium ATCC 1428	0	23.2	25.5	—	—	—	12.8	13.2	13.8	15.7
P. aeruginosa ATCC 25619	0	38.7	41.6	—	—	—	12.3	13.4	15.9	17.3
S. aureus ATCC 6538	0	26.3	28.6	29.7	30.4	32.7	12.4	14.4	15.2	15.8
B. subtilis ATCC 6633	0	37.5	41.2	—	—	—	18.9	19.8	21.9	22.4
K. rhizophila ATCC 9341	0	22.0	24.6	—	—	—	13.8	15.5	17.3	19.5

—: overlapping of zones.