Table 3.

Antibacterial activity of the leaves and stem extracts of Calpurnia aurea.

		Minimum inhibitory concentration (mg/ml)
Bacterial species	Gram +/-	Leaves	Stem	Chloramphenicol μg/ml	Streptomycin μg/ml
Bacillus cereus	+	5.0	5.0	< 2	< 2
Staphylococcus epidermidis	+	5.0	na	< 2	< 2
Staphylococcus aureus	+	5.0	na	< 2	< 2
Micrococcus kristinae	+	5.0	na	< 2	< 2
Streptococcus pyogens	+	5.0	5.0	< 2	< 2
Escherichia coli	-	5.0	na	< 2	< 2
Salmonella pooni	-	5.0	na	< 2	< 2
Serratia marcescens	-	na	na	< 2	< 2
Pseudomonas aeruginosa	-	na	na	< 20	< 5
Klebsiella pneumonae	-	na	na	< 2	< 2

na = not active.