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Antibiotics 2018, 7(3), 51; https://doi.org/10.3390/antibiotics7030051

Antimicrobial Potential and Cytotoxicity of Silver Nanoparticles Phytosynthesized by Pomegranate Peel Extract

1
Department of Dentistry, University Center of Adamantina (UNIFAI), Adamantina 17800-000, São Paulo, Brazil
2
Department of Dental Materials and Prosthodontics, São Paulo State University (UNESP), School of Dentistry, Araçatuba 16015-050, São Paulo, Brazil
3
Laboratory of Research, Development & Innovation, Apis Flora Industrial e Comercial Ltda., Ribeirão Preto 14020-670, São Paulo, Brazil
4
Department of Chemistry, Federal University of São Carlos, São Carlos 13565-905, São Paulo, Brazil
5
FACET-Department of Chemistry, Federal University of Grande Dourados, Dourados 79804-970, Mato Grosso do Sul, Brazil
*
Author to whom correspondence should be addressed.
Received: 27 April 2018 / Revised: 19 June 2018 / Accepted: 25 June 2018 / Published: 26 June 2018
(This article belongs to the Special Issue Silver-Based Antimicrobials)
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Abstract

The phytosynthesis of metal nanoparticles is nowadays attracting the increased attention of researchers and is much needed given the worldwide matter related to environmental contamination. The antimicrobial activity of colloidal and spray formulation of silver nanoparticles (AgNPs) synthesized by pomegranate peel extract against Candida albicans and Staphylococcus aureus, and their cytotoxicity in mammalian cells were tested in the present study. Dry matter, pH, total phenolics, and ellagic acid in the extract were determined. Then, AgNPs were phytosynthesized and characterized by X-ray diffraction, electron transmission microscopy, dynamic light scattering, zeta potential, and Ag+ dosage. Spray formulations and respective chemical-AgNP controls were prepared and tested. The peel extract reduced more than 99% of Ag+, and produced nanoparticles with irregular forms and an 89-nm mean size. All AgNP presented antimicrobial activity, and the spray formulation of green-AgNP increased by 255 and 4 times the effectiveness against S. aureus and C. albicans, respectively. The cytotoxicity of colloidal and spray green-AgNP was expressively lower than the respective chemical controls. Pomegranate peel extract produced stable AgNP with antimicrobial action and low cytotoxicity, stimulating its use in the biomedical field. View Full-Text
Keywords: silver; nanoparticles; Candida albicans; Staphylococcus aureus; herbal medicine; Punicaceae silver; nanoparticles; Candida albicans; Staphylococcus aureus; herbal medicine; Punicaceae
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Fernandes, R.A.; Berretta, A.A.; Torres, E.C.; Buszinski, A.F.M.; Fernandes, G.L.; Mendes-Gouvêa, C.C.; de Souza-Neto, F.N.; Gorup, L.F.; de Camargo, E.R.; Barbosa, D.B. Antimicrobial Potential and Cytotoxicity of Silver Nanoparticles Phytosynthesized by Pomegranate Peel Extract. Antibiotics 2018, 7, 51.

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