Synthesis of silver nanoparticles using aqueous leaf extract of mimosa albida (mimosoideae): characterization and antioxidant activity

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dc.careerEscuela de Ciencias Químicases
dc.category.authorprincipalen_US
dc.contributor.authorEspinoza Montero, Patricio Javier
dc.contributor.authorFernández Martínez, Lenys Mercedes
dc.contributor.authorJara Negrete, Eliza Nuit
dc.contributor.authorMeneses Olmedo, Lorena Maribel
dc.contributor.authorPilaquinga Flores, María Fernanda
dc.contributor.correspondingEspinoza Montero, Patricio
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:31:15Z
dc.date.available2023-11-04T21:31:15Z
dc.date.issued2020-01-20
dc.dedication.authorTCes
dc.description.abstractThe 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−1 and in the nanoparticles 257.3 ± 5.1 mg GAE· 100 g−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 µmol ET g−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.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author2100381306
dc.id.author1757845787
dc.id.author1713089389
dc.id.author1002429411
dc.id.author1715307110
dc.id.type1
dc.identifier.doihttps://doi.org/10.3390/ma13030503
dc.identifier.issn1996-1944
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/4797
dc.identifier.urihttps://www.mdpi.com/1996-1944/13/3/503
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsEspinoza Montero, P., Fernández Martínez, L., Jara Negrete, E., Meneses Olmedo, L. y Pilaquinga Flores M.
dc.magazine.pageRange1-17
dc.magazine.titleMultidisciplinary Digital Publishing Instituteen_US
dc.magazine.volumeChapterVolume 13
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectAntioxidantes naturaleses
dc.subjectNanopartículases
dc.subjectIndustria fitoquímicaes
dc.subjectAnálisis electroquímicoes
dc.subjectAntioxidantes naturales
dc.subjectNanopartículas
dc.subjectIndustria fitoquímica
dc.subjectAnálisis electroquímico
dc.titleSynthesis of silver nanoparticles using aqueous leaf extract of mimosa albida (mimosoideae): characterization and antioxidant activityen_US
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