Synthesis of silver nanoparticles using white rot fungus Anamorphous Bjerkandera sp. R1: influence of silver nitrate concentration and fungus growth time

Currently, silver nanoparticles (AgNPs) constitute an interesting field of study in medicine, catalysis, optics, among others. For this reason, it has been necessary to develop new methodologies that allow a more efficient production of AgNPs with better antimicrobial and biological properties. In this research growth time effects Anamorphous Bjerkandera sp. R1 and the silver nitrate (AgNO3) concentration over AgNPs synthesis were studied. Through the protocol used in this work, it was found that the action of the capping proteins on the surface of the mycelium played a determining role in the reduction of the Ag+ ion to Ag0 nanoparticles producing a particle size that oscillated between 10 and 100 nm. The progress of the reaction was monitored using visible UV-Vis spectroscopy and the synthesized AgNPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared radiation (FTIR) spectroscopy. The best synthetic properties were found at 1 mM of AgNO3 concentration, growth time of 8 days, and reaction time of 144 h. Nanometals obtention from microorganisms could be considered as a new method of synthesis, due to reducing abilities of metal ions through its enzymatic system and represents low-cost synthesis that reduces the generation of harmful toxic wastes.

• Autores: Osorio Echavarria, Jerónimo; Osorio Echavarria, Juliana; Ossa Orozco, Claudia Patricia; Gómez Vanegas, Natalia Andrea
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2021
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/45995
• Acceso en línea: https://hdl.handle.net/10495/45995
• Palabra clave: Basidiomycota; Basidiomycota; Nanopartículas del Metal - química; Metal Nanoparticles - chemistry; Nanopartículas del Metal - ultraestructura; Metal Nanoparticles - ultrastructure; Plata - química; Silver - chemistry; Plata - metabolismo; Silver - metabolism; Nitrato de Plata - metabolismo; Silver Nitrate - metabolism; Nitrato de Plata - farmacología; Silver Nitrate - pharmacology; Análisis Espectral; Spectrum Analysis; Basidiomycota; https://id.nlm.nih.gov/mesh/D012835; https://id.nlm.nih.gov/mesh/D001487; https://id.nlm.nih.gov/mesh/D053768; https://id.nlm.nih.gov/mesh/D012834; https://id.nlm.nih.gov/mesh/D012835; https://id.nlm.nih.gov/mesh/D013057; Silver - metabolism; ODS 9: Industria, innovación e infraestructura. Construir infraestructuras resilientes, promover la industrialización inclusiva y sostenible y fomentar la innovación; ODS 12: Producción y consumo responsables. Garantizar modalidades de consumo y producción sostenibles
• Rights: openAccess
• License: http://creativecommons.org/licenses/by/4.0/