Antibacterial application of natural and carboxymethylated cashew gum-based silver nanoparticles produced by microwave-assisted synthesis.
Carbohydr Polym
; 241: 115260, 2020 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-32507221
ABSTRACT
This study presents a green synthesis route to silver nanoparticles (AgNPs) stabilized with cashew gum (CG) or carboxymethylated cashew gum (CCG) using microwave-assisted synthesis and evaluates their antibacterial activity. The antimicrobial activity was measured by determining the minimum inhibitory concentration (MIC) with Staphylococcus aureus and Escherichia coli. In both cases of the presence of CG and CCG, it was found that higher pH lead to more efficient conversion of silver nitrate to AgNPs with well dispersed, spherical and stable particles as well as low crystallinity. CCG-capped AgNPs were slightly smaller (137.0 and 96.3 nm) than those coated with non-modified gum (144.7 and 100.9 nm). The samples presented promising antibacterial activity, especially on Gram-negative bacteria, resulting in significant membrane damage on treated bacteria in comparison to the untreated control, observed by atomic force microscopy. Thus, a quick and efficient synthesis route was applied to produce CGAgNPs and CCGAgNPs with antimicrobial potential.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Plata
/
Anacardium
/
Gomas de Plantas
/
Nanopartículas del Metal
/
Antibacterianos
Idioma:
En
Revista:
Carbohydr Polym
Año:
2020
Tipo del documento:
Article
País de afiliación:
Brasil