Screening of the Dichloromethane: Methanolic Extract of Centella asiatica for Antibacterial Activities against Salmonella typhi, Escherichia coli, Shigella sonnei, Bacillus subtilis, and Staphylococcus aureus

Table 2

Minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) for bacteria test cultures in mg/ml.

	Concentration
	C. asiatica (mg/ml)		Tetracycline (µg/ml)
	MIC	MBC	MIC	MBC
S. typhi	62.50 ± 0.00^a	125.00 ± 0.00^a	1.96 ± 0.22^b	3.91 ± 0.00^b
S. sonnei	52.1 ± 10.40^ab	62.50 ± 0.00^b	4 ± 0.00^a	32 ± 0.00^a
B.subtilis	52.1 ± 10.40^ab	62.50 ± 0.00^b	1.96 ± 0.22^b	15.63 ± 0.1^a
E.coli	62.50 ± 0.00^a	125.00 ± 0.00^a	0.98 ± 1.0^c	3.91 ± 0.00^b
S.aureus	26.04 ± 5.21^b	52.10 ± 10.4^b	0.25 ± 0.00^c	1.96 ± 0.00^c

Values are expressed as mean ± standard error of the mean (SEM) for triplicate reading. Values with the same superscript letter in the columns are not significantly different by one-way ANOVA followed by Tukey’s post-hoc test.