Synthesis of Silver Nanoparticles Using Aqueous Extract of Medicinal Plants’ (Impatiens balsamina and Lantana camara) Fresh Leaves and Analysis of Antimicrobial Activity

Table 3

Antibacterial activity of Ag nanoparticles synthesized using various concentrations of AgNO₃ precursors and aqueous extracts of fresh leaves of I. balsamina and L. camara.

Plants	[AgNO3] (mM)/replication		Zone of inhibition (mm)
			S. aureus	Positive control	E. coli	Positive control
I. balsamina	3	1	11.3	18.2	14.3	17.8
		2	12.3	21.2	7.8	20.7
		3	9.5	19.7	8.5	20
	Average		11.03^a	19.7^b	10.2^c	19.5^d
	5	1	20	19.7	10.3	19.6
		2	10.5	19.8	7.3	19.4
		3	11	19.6	9	19.5
	Average		13.8	19.7	8.9^e	19.5^f
L. camara	3	1	12.8	18.1	20.5	18
		2	14.5	20.9	15.3	21
		3	14.5	20	17.3	19.8
	Average		13.9	19.7	17.7	19.6
	5	1	13	19.6	15.3	19.4
		2	20	19.8	16.5	19.7
		3	14.3	19.8	14.5	19.8
	Average		15.8	19.73	15.4	19.63

Positive control = ciprofloxacin; values indicated with “a” are significantly different from values indicated with “b”; values indicated with “c” are significantly different from values indicated with “d”; values indicated with “e” are significantly different from values indicated with “f”.