Antibacterial Activity of Chalcone and Dihydrochalcone Compounds from Uvaria chamae Roots against Multidrug-Resistant Bacteria

Table 1

Inhibition diameters measured for root extracts and antibiotic discs.

Strain name	Reference	Uvaria chamae roots			Antibiotic discs (controls)
		Water Extract	Ethanol-Water Extract	Ethanol Extract	colistin	imipenem	vancomycin	mupirocin
S. aureus	ATCC 259223	0	9.0±0.6 a,b	27.7±0.9 a,b	-	-	20.3±0.9	30.7±0.7
S. aureus Méti R	Clinical isolate	0	9.0±0.6 a,b	25.0±0.6 a,b	-	-	20.67±0.3	31.3±1.3
S. aureus Mupi R	Clinical isolate	0	9.0±0.6 a	28.3±0.3 a	-	-	19.3±0.3	0
E. faecalis Van A	Clinical isolate	0	15.7±0.3	30.7±0.7	-	-	0	-
E. faecium Van A	Clinical isolate	0	15.7±0.3	30.3 ±0.3	-	-	0	-
E. faecium Van B	Clinical isolate	0	15.7±0.3	28.3±0.3	-	-	0	-
E. coli	ATCC 25922	0	0	0	20	28	-	-
E. coli BLSE	Clinical isolate	0	0	0	20	28	-	-
K. pneumoniae BLSE	Clinical isolate	0	0	0	20	28	-	-
E. cloacae BLSE	Clinical isolate	0	0	0	20	28	-	-
P. aeruginosa Vim-2	Clinical isolate	0	0	0	20	0	-	-

Inhibition diameters are given in millimetres. Significant inhibition difference with a: vancomycin and b: mupirocin (p< 0,05).