OPTIMIZATION OF GREEN SYNTHESIS OF SILVER NANOPARTICLES BY USING HARPAGOPHYTUM PROCUMBENS ROOT EXTRACT

This paper reports on biosynthesis of silver nanoparticles (AgNPs) by a phytosynthesis method using an aqueous extract from Harpagophytum procumbens (Devil's claw) root for biomedical application. For AgNPs synthesis two ratios of vegetal extract: AgNPs 1mM solution have been used. Time evolution of AgNPs formation has been monitored by means of SPR band of UV-Vis spectroscopy, while nanomefric size of these nanoparticles has been confirmed by DLS measurements. Antioxidant properties have been evaluated by ABTS(+) and chemiluminescence techniques, demonstrating an 18.3 % capacity for ABTS(+) radicals capture and 75.5 % quenching of short-lived radicals.