Antimicrobial Properties of Strychnos phaeotricha (Loganiaceae) Liana Bark Secondary Metabolites at the Interface of Nanosilver Particles and Nanoencapsulation by Chitosan Transport Vehicles

Table 5

MIC and MBC of different samples tested against E. coli and Salmonella spp (sensitive) compared to those of ciprofloxacin.

Microbial strain	Escherichia coli			Salmonella typhi
	MIC (mg/mL)	MBC (mg/mL)	MBC/MIC	MIC (mg/mL)	MBC (mg/mL)	MBC/MIC
ME	1.000	>1.000	/			4.000^$
AE	1.000	>1.000	/			4.000^$
NC-ME			4.000^$			4.000^$
NC-AE			2.000^#		>1.000	/
NC	>1.000	>1.000	/	>1.000	>1.000	/
AgNPs			1.000^#			2.000^#
CIPRO			1.000^#			2.000^#
Positive control	-			-
Negative control	+			+
Sterility control of the culture media	-			-

Note. -: no growth observed; +: presence of growth; ^#bactericidal; ^$bacteriostatic. .