Ecofriendly Synthesis of Silver Nanoparticles from Garden Rhubarb (Rheum rhabarbarum)

Table 2

Antibacterial activity results of RR and RR-SNPs.

Serial no	Test sample	Zones of inhibition (mm)
		S. aureus		E. coli
		After 24 h	After 48 h	After 24 h	After 48 h
I	(E) RR	0	0	0	0
II	() RR-SNPs 1	2.6	3.4	2.3	3.3
III	() RR-SNPs 2	6.6	7.3	4.0	7.6
IV	() RR-SNPs 3	8.7	9.8	10.6	10.8

RR-SNPs 1: composition (RR 4 mL + 5 μL AgNO₃); RR-SNPs 2: composition (RR 4 mL + 10 μL AgNO₃); RR-SNPs 3: composition (RR 4 mL + 15 μL AgNO₃).