The aqueous and ethanolic extracts of
Launaea procumbens
Roxb. (Labiateae),
Vitis vinifera
L. (Vitaceae) and
Cyperus rotundus
L. (Cyperaceae) were evaluated for antimicrobial activity against clinically important bacteria viz.
Alcaligenes faecalis
ATCC8750,
Bacillus cereus
ATCC11778,
Bacillus subtilis
ATCC6633,
Enterobacter aerogenes
ATCC13048,
Escherichia coli
ATCC25922,
Klebsiella pneumoniae
NCIM2719,
Proteus mirabilis
NCIM224,
Proteus vulgaris
NCTC8313, Pseudomonas aeruginosa ATCC27853, Pseudomonas pseudoalcaligenes ATCC17440, Salmonella typhimurium ATCC23564,
Staphylococcus aureus
ATCC25923,
Staphylococcus epidermidis
ATCC12228,
Staphylococcus subfava
NCIM2704 and
Candida tropicalis
ATCC4563. The in vitro antimicrobial activity was performed by agar disc diffusion and agar well diffusion method. The ethanolic extracts of all the plants were active against all the investigated bacterial strains while all the aqueous extracts were inactive except for
Vitis vinifera L.
S. typhimurium was the most resistant bacterial strain against all the extracts