Green synthesis of silver nanoparticles by using leaf extracts from the endemic Buddleja globosa hope

Over the last few years, the green synthesis of nanoparticles (NPs) using plant extracts has emerged as a promising methodology for the fabrication of metallic NPs (especially silver, copper, and gold NPs), as it involves an easy, fast, low-cost, and environmentally friendly bioprocess. However, many factors affect the sizes and morphologies of NPs biosynthesized by this method, including the nature of the plant extract, among others. Therefore, the green synthesis of metal NPs with defined stability, size, and morphology distribution remains under evaluation. In the present study, we propose aqueous extracts from the endemic-medicinal plant Budleja globosa (“Matico”) as an efficient bioproduct for the green synthesis of silver NPs (AgNPs). Experimental results indicate that room temperature, low concentrations of leaf extracts of B. globosa, and silver nitrate salt were sufficient to biosynthesize AgNPs with uniform size (16 nm) and shape distribution (spherical).Fondo Nacional de Desarrollo Científico y Tecnológico 11150322 FONDECYT 3150101 DGIP Universidad Católica de Temuco 2015PF-GR-06 Bio-Nanomaterials Research Group VIP Universidad Católica de Temuco N°201GI-CI-01 project, DGIPUCT-CD-2010-01 project, and MECESUPUCT-0804 project