Antibacterial activities of the methanol extracts and compounds from Erythrina sigmoidea against Gram-negative multi-drug resistant phenotypes

Table 2 MICs and MBC (μg/mL) of the crude extracts from Erythrina sigmoidea and chlroramphenicol on the panel of tested bacteria

Bacterial strains	Tested plant samples, MIC and MBC (μg/ml) and ratio MBC/MIC
	Erythrina sigmoidea leaves extract			Erythrina sigmoidea bark extract			Chloramphenicol
	MIC	MBC	MBC/MIC	MIC	MBC	MBC/MIC	MIC	MBC	MBC/MIC
Escherichia coli
ATCC8739	64	64	1	16	64	4	4	64	16
AG100	32	256	8	32	128	4	8	>512	na
AG100A	512	1024	2	256	1024	4	4	>512	na
AG100A_TET	1024	1024	1	256	512	2	32	>512	na
AG102	512	1024	2	128	1024	8	8	>512	na
MC4100	1024	1024	1	512	512	1	32	>512	na
W3110	512	512	1	512	512	1	8	>512	na
Enterobacter aerogenes
ATCC13048	128	256	2	128	1024	8	16	128	8
CM64	1024	>1024	na	1024		na	512	>512	na
EA27	256	256	1	64	128	2	128	>512	na
EA289	1024	>1024	na	512	>1024	na	512	>512	na
EA298	512	512	1	512	1024	2	256	>512	na
EA294	64	512	8	16	128	8	4	32	8
Enterobacter cloacae
ECCI69	1024	>1024	na	1024	>1024	na	256	>512	na
BM47	1024	1024	1	1024	1024	1	512	>512	na
BM67	1024	>1024	na	1024	1024	1	256	>512	na
Klebsiella pneumoniae
ATCC11296	256	256	1	64	512	8	16	128	8
KP55	512	>1024	na	256	>1024	na	64	256	4
KP63	128	>1024	na	16	128	8	128	>512	na
K24	256	512	2	128	>1024	na	16	>512	na
K2	128	1024	8	64	512	8	16	256
Providencia stuartii
ATCC29916	128	>1024	na	32	128	4	8	128	16
NAE16	128	128	1	32	>1024	na	8	256	32
PS2636	1024	>1024	na	1024	1024	1	64	>512	na
PS299645	512	1024	2	64	128	2	32	>512	na
Pseudomonas aeruginosa
PA01	1024	1024	1	256	256	1	16	256	8
PA124	>1024	>1024	na	>1024	>1024	na	64	\|256	4

ISSN: 2662-7671