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Open AccessArticle

Bionanotechnology: Silver Nanoparticles Supported on Bovine Bone Powder Used as Bactericide

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Engineering department, campus Toluca, Universidad del Valle de México, De Las Palmas 439, San Jorge Pueblo Nuevo, Metepec 52164, Mexico
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Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Universidad Autónoma del Estado de México, Carretera Toluca-Atlacomulco Km 14.5, San Cayetano, Toluca 50200, Mexico
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(2), 462; https://doi.org/10.3390/ma13020462
Received: 11 December 2019 / Revised: 8 January 2020 / Accepted: 15 January 2020 / Published: 18 January 2020
(This article belongs to the Special Issue Nanocomposites as Effective and Targeted Antibacterial Agents)
Bionanotechnology is a relatively new term that implies the use of some biological material or organisms in order to prepare nanosystems or nanoparticles. This work presents the preparation and bactericide application of a sustainable nanometric system (silver nanoparticles) using a waste biological support (bovine bone powder). This system was prepared by the method of metallic salt reduction, using NaBH4 as reducing agent and AgNO3 as metallic salt. Two silver contents were analyzed, 1% and 5% weight. The latter was found to be more efficient than the former. Transmission electronic microscopy shows an average size of 10.5 ± 3.3 nm and quasi-sphere morphology. The antimicrobial assay shows that a 5% weight content of silver had a bactericide effect for Escherichia coli at 46.8 min of exposure. The minimum inhibitory concentration (MIC) of silver nanoparticles supported on bovine bone powder for Escherichia coli was 7.5 µg/mL. The biocomposite exhibits a specific antibacterial kinetics constant (k) of 0.1128 min−1 and decimal reduction time (DRT) of 20.39 min for Escherichia coli. Thus, it was concluded that a biocomposite was prepared with a biodegradable, waste, and low-cost support, under mild conditions (room temperature and atmospheric pressure) and using water as solvent. View Full-Text
Keywords: nanocomposite; Escherichia coli; bactericide effect; Ag nanoparticles; minimum inhibitory concentration nanocomposite; Escherichia coli; bactericide effect; Ag nanoparticles; minimum inhibitory concentration
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MDPI and ACS Style

Gama-Lara, S.A.; Pérez Mendoza, M.S.; Vilchis-Nestor, A.R.; Natividad, R. Bionanotechnology: Silver Nanoparticles Supported on Bovine Bone Powder Used as Bactericide. Materials 2020, 13, 462.

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