Assessment of phytochemical content, polyphenolic composition, antioxidant and antibacterial activities of Leguminosae medicinal plants in Peninsular Malaysia

Table 2 Antibacterial activity of flowers (F) and leaves (L) of Leguminosae species^a evaluated using disc diffusion assay at 1 mg per disc

		Bacterial strains
		Diameter of zone of inhibition (mm)
Plants	Part	B. cereus ATCC 14579	M. luteus ATCC 4698	MSSA ATCC 25923	MRSA ATCC 33591	MRSA (clinical isolate)^b
A. auriculiformis	F	10.0 ± 0.0	11.8 ± 0.4	11.8 ± 0.4	15.3 ± 0.4	13.3 ± 0.4
	L	9.50 ± 0.7	12.0 ± 0.0	12.0 ± 0.0	15.3 ± 1.1	13.5 ± 0.7
B. kockiana	F	10.0 ± 0.0	12.0 ± 0.0	12.5 ±0.7	11.0 ± 0.0	11.5 ± 0.7
	L	8.00 ±0.00	10.0 ± 0.0	9.50 ± 0.70	9.00 ± 0.00	10.0 ± 0.0
B. purpurea	F	-	-	-	12.3 ± 0.4	10.0 ± 0.0
	L	7.00 ± 0.00	8.30 ± 0.35	7.00 ± 0.00	8.00 ± 0.00	-
C. pulcherrima	F	7.80 ± 0.40	10.0 ± 0.0	10.0 ± 0.0	9.50 ± 0.70	9.50 ± 0.70
	L	7.80 ± 0.40	10.0 ± 0.0	10.0 ± 0.0	10.5 ± 0.7	9.50 ± 0.70
C. tergemina	F	7.00 ± 0.00	7.50 ± 0.70	8.50 ± 0.00	9.30 ± 0.35	8.50 ± 0.70
	L	10.3 ± 0.4	11.0 ± 0.0	12.0 ± 0.0	13.0 ± 0.0	11.0 ± 0.0
C. surattensis	F	7.50 ± 0.70	10.0 ± 0.0	10.0 ± 0.0	11.0 ± 0.0	10.0 ± 0.0
	L	7.50 ± 0.70	10.0 ± 0.0	10.0 ± 0.0	10.0 ± 0.0	10.0 ± 0.0
L. leucocephala	F	-	9.30 ± 0.40	8.00 ± 0.00	11.0 ± 0.0	8.80 ± 1.10
	L	-	9.00 ± 0.00	9.30 ± 0.40	9.30 ± 0.40	10.0 ± 0.0
P. pterocarpum	F	8.00 ± 0.0	11.3 ± 0.4	9.80 ± 0.40	10.8 ± 0.4	10.3 ± 0.4
	L	9.80 ± 0.40	12.0 ± 0.0	11.5 ± 0.7	11.8 ± 0.4	10.8 ± 1.1
S. saman	F	-	-	-	-	-
	L	-	21.3 ± 0.4	8.50 ± 0.70	9.00 ± 0.00	9.30 ± 0.35
Streptomycin (10 μg/disc)		24.0 ± 0.0	27.0 ± 0.0	14.0 ± 0.0	n.t	n.t
Vancomycin (30 μg/disc)		n.t	n.t	n.t	21.0 ± 0.0	21.0 ± 0.0

Note: diameter of the antibacterial disc is 6 mm. Results are expressed as means ± SD obtained from 3 independent experiments. ^aAll extracts were inactive against Gram negative bacteria (Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 10031, Pseudomonas aeruginosa ATCC 10145, Enterobacter aerogenes obtained from Institute for Medical Research Malaysia) tested. ^bObtained from Faculty of Medicine and Health Sciences UPM. "-" indicates no inhibition activity. "n.t" represents not tested.

ISSN: 2662-7671