Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Mimosa albida (Mimosoideae): Characterization and Antioxidant Activity
| Autor: | Dennis Amaguaña, Alexis Debut, Josué Pozo-Martínez, Mauricio Moncada-Basualto, Lorena Meneses, Jeroni Morey, Claudio Olea-Azar, Patricio J. Espinoza-Montero, Fernanda Pilaquinga, Lenys Fernández, Nieves Piña, Eliza Jara-Negrete, Fernanda López |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
silver nanoparticles
Antioxidant Oxygen radical absorbance capacity Mimosa albida medicine.medical_treatment antioxidant activity 02 engineering and technology lcsh:Technology 01 natural sciences High-performance liquid chromatography Silver nanoparticle Article chemistry.chemical_compound polyphenolic total content medicine General Materials Science Gallic acid lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Chemistry 010401 analytical chemistry food and beverages 021001 nanoscience & nanotechnology 0104 chemical sciences lcsh:TA1-2040 Polyphenol lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Differential pulse voltammetry Cyclic voltammetry lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 Nuclear chemistry |
| Zdroj: | Materials Volume 13 Issue 3 Materials, Vol 13, Iss 3, p 503 (2020) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13030503 |
| Popis: | The search for sensitive and rapid analytical techniques for the determination of natural antioxidants is an area in constant growth due, among other aspects, to the complexity of plant matrices. In this study, silver nanoparticles prepared with the aqueous extract of Mimosa albida leaves were used to assess their polyphenolic content and antioxidant capacity. Silver nanoparticles were characterized by different techniques. As a result, nanoparticles of 6.5 ± 3.1 nm were obtained. The total phenolic content in the extract was 1320.4 ± 17.6 mg of gallic acid equivalents GAE. 100 g&minus 1 and in the nanoparticles 257.3 ± 5.1 mg GAE. 100 g&minus 1. From the phenolic profile analyzed by ultra high-performance liquid chromatography (UPLC) with a diode-array detector (DAD), the presence of apigenin and luteolin in the plant extract is postulated. The antioxidant capacity measured by oxygen radical absorbance capacity ORAC-fluorescein assay was 86917 ± 6287 and 7563 ± 967 µ mol ET g&minus 1 in the extract and nanoparticles respectively. Electrochemical analysis by cyclic voltammetry (CV) confirmed the effective reduction capacity of the Mimosa albida leaves extract to reduce Ag ions to AgNPs and differential pulse voltammetry (DPV) suggested the presence of two main reducing agents in the extract. From this study, it was concluded that the aqueous extract of Mimosa albida contains reducing agents capable of synthesizing silver nanoparticles, which can be used in the phytochemical industry. |
| Databáze: | OpenAIRE |
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