Molecules, Vol. 26, Pages 4986: Green Synthesis of Silver Nanoparticles Using Natural Extracts with Proven Antioxidant Activity

Molecules, Vol. 26, Pages 4986: Green Synthesis of Silver Nanoparticles Using Natural Extracts with Proven Antioxidant Activity Molecules doi: 10.3390/molecules26164986 Authors: Jolanta Flieger Wojciech Franus Rafał Panek Monika Szymańska-Chargot Wojciech Flieger Michał Flieger Przemysław Kołodziej Natural extracts are a rich source of biomolecules that are useful not only as antioxidant drugs or diet supplements but also as complex reagents for the biogenic synthesis of metallic nanoparticles. The natural product components can act as strong reducing and capping substrates guaranteeing the stability of formed NPs. The current work demonstrates the suitability of extracts of Camellia sinensis, Ilex paraguariensis, Salvia officinalis, Tilia cordata, Levisticum officinale, Aegopodium podagraria, Urtica dioica, Capsicum baccatum, Viscum album, and marine algae Porphyra Yezoensis for green synthesis of AgNPs. The antioxidant power of methanolic extracts was estimated at the beginning according to their free radical scavenging activity by the DPPH method and reducing power activity by CUPRAC and SNPAC (silver nanoparticle antioxidant capacity) assays. The results obtained by the CUPRAC and SNAPC methods exhibited excellent agreement (R2~0.9). The synthesized AgNPs were characterized by UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), dynamic light scattering (DL...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research