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UV-Vis analysis of nanoparticles (NPs). Panel (a) demonstrate UV-Vis absorption peaks of pristine poly-herbal bio-actives in Liv52 extract (PLE), AgNO3 and LIV-AgNPs. Panel (b) shows stability of PLE capped silver NPs (LIV-AgNPs) based on surface plasmon resonance (SPR) measurements up to six months (error bars represent the mean ± SE of three replicates).
