Production of Silver Nanoparticles Mediated by Aqueous Extracts of Tucumã (Astrocaryum aculeatum) Pulp

Journal of the Brazilian Chemical Society

article

Santos, Sidney S. dos¹  Couto, Ricardo A. A. de²  Silva, Ingrid R. da³  Aouada, Marcia Regina M.⁴  Costantino, Vera R. L.²  Costa, Luiz P. da¹  Perotti, Gustavo F.¹ 

[1] Universidade Federal do Amazonas;Universidade de São Paulo;Centro de Biotecnologia da Amazônia;Universidade Estadual Paulista

关键词: green synthesis;    alternative routes;    plant extract;    Amazonian resources;   

DOI  :  10.21577/0103-5053.20220141

学科分类：内科医学

来源: SciELO

【 摘 要 】

Tucumã (Astrocaryum aculeatum) pulp presents a large number of secondary metabolites that can mediate the synthesis of metallic nanoparticles through a greener and more sustainable synthetic route than traditional ones. This study investigated the production of silver nanoparticles (AgNPs) mediated by aqueous extracts of tucumã pulp assessing different parameters, such as temperature, concentration of extract, and pH values of the reaction media. The alkaline reaction media produced the most intense and well-defined bands around 400 nm in the electronic spectra, indicating the formation of AgNPs in the three concentrations of tucumã pulp evaluated. The increase in the temperature of the reaction media also enhanced the surface plasmon resonance band of AgNPs but it increased the polydispersivity of produced nanoparticles according to the dynamic light scattering (DLS) and transmission electron microscopy (TEM) data. Zeta potential results indicated moderate stability of the AgNPs (close to -30 mV). Antimicrobial assessment of the colloidal metal particles indicated microbicide activity against the Gram-negative Escherichia coli bacterium.

【 授权许可】

CC BY