Table 1.

Antibacterial Activity of B.oleracea Methanol Extract by Disc diffusion Method

Microorganisms		Inhibition Zone in Diameter (mm)
Bacterial species	Number of strains	B.oleracea methanol extract (mg/ml)		Negative control(MeOH*)	Positive control Streptomycin 10 µg/disc
		200	500
Staphylococcus aureus	2 (clinical isolate)	-	11.5 ± 2.5	-†	18 ± 0.4
S. aureus	1 (ATCC 29247 stain)	-	11 ± 1.3	-	17 ± 0.8
MRSAa	1 (clinical isolate)	-	7 ± 0.5	-	-
Bacillus subtilis	1 (isolate)	7 ± 0.3	17 ± 0.8	-	18 ± 1.1
Escherichia coli	1(clinical isolate)	12 ± 0.9	19 ± 2.1	-	16 ± 0.9
E.coli	1 (ATCC 25922 strain)	15 ± 1.1	20 ± 1.0	-	11 ± 0.3
E.coli	1 (ATCC 35218 strain)	15 ± 0.8	20 ± 1.7	-	16 ± 0.5
E.coli O157:H7	1 (isolate)	13 ± 1.2	17 ± 0.4	-	18 ± 0.8
Pseudomonas aeruginosa	1 (clinical isolate)	12 ± 0.6	19 ± 0.6	-	18 ± 1.0
Klebsiella pneumoniae	1 (clinical isolate)	8 ± 0.5	15 ± 0.5	-	19 ± 0.7
Salmonella enterica serovar Typhimurium	1 (ATCC 25241 strain)	18 ± 1.3	18 ± 0.6	-	15 ± 0.5

^*:MeOH: methanol

^†: (-) means no growth inhibition zone

^aMethicillin-resistant Staphyloccocus aureus.