Eugenia uniflora L. Silver and Gold Nanoparticle Synthesis, Characterization, and Evaluation of the Photoreduction Process in Antimicrobial Activities

Autor(es)

Franzolin, Marcia Regina ; Courrol, Daniella dos Santos ; Barreto, Susana de Souza ; Courrol, Lilia Coronato

• Tipo de documento: Artigo Científico
• Fonte: MICROORGANISMS; v. 10, n. 5, p. 13-pg., 2022-05-01.

Resumo

Eugenia uniflora linnaeus, known as Brazilian cherry, is widely distributed in Brazil, Argentina, Uruguay, and Paraguay. E. uniflora L. extracts contain phenolic compounds, such as flavonoids, tannins, triterpenes, and sesquiterpenes. The antimicrobial action of essential oils has been attributed to their compositions of bioactive compounds, such as sesquiterpenes. In this paper, the fruit extract of E. uniflora was used to synthesize silver and gold nanoparticles. The nanoparticles were characterized by UV-Vis, transmission electron microscopy, elemental analysis, FTIR, and Zeta potential measurement. The silver and gold nanoparticles prepared with fruit extracts presented sizes of similar to 32 nm and 11 nm (diameter), respectively, and Zeta potentials of -22 mV and -14 mV. The antimicrobial tests were performed with Gram-negative and Gram-positive bacteria and Candida albicans. The growth inhibition of EuAgNPs prepared with and without photoreduction showed the important functional groups in the antimicrobial activity. (AU)

• Processo FAPESP: 17/23686-6 - Utilização da Espectroscopia de Fluorescência na Detecção de Contaminação em Alimentos
• Beneficiário: Lilia Coronato Courrol
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/13291-0 - Avaliação do potencial antimicrobiano de nanopartículas de ouro e prata sintetizadas empregando extrato aquoso de Mimusops coriacea
• Beneficiário: Marcia Regina Franzolin
• Modalidade de apoio: Auxílio à Pesquisa - Regular