Antioxidant activity of environmentally - Friendly noble metallic nanoparticles

Abstract

This research paper presents the environmentally - friendly synthesis of two noble metallic nanoparticles, namely silver (AgNPs) and gold (AuNPs), from ten different plants with proven pharmaceutical benefits, e.g.: Sea buckthorn, Elderflower, Lungwort, Acacia, Cornflower, Ramson, etc. Both AgNPs and AuNPs are prepared via two routes: at room temperature, in the dark, for 24 hours and at 50°C under a constant stirring of 600 rpm for 30 minutes. UV - Vis spectroscopy was used to investigate the formation of both AgNPs and AuNPs and compared to the UV - Vis spectra of the plain aqueous extracts prepared at 4°C. The main purpose of our research was to investigate the antioxidant activity of the aqueous extracts and noble metallic nanoparticles obtained thereof and to determine whether the temperature-conducted environmentally - friendly synthesis of AgNPs and AuNPs influences the antioxidant activity in any way.