Biofabrication of discrete spherical gold nanoparticles using the metal-reducing bacterium Shewanella oneidensis

Suresh, Anil K.; Pelletier, Dale A.; Wang, Wei; Broich, Michael L; Moon, Ji Won; Gu, Baohua; Allison, David P.; Joy, David C.; Phelps, Tommy J.; Doktycz, Mitchel J.

doi:10.1016/j.actbio.2011.01.023

Cited by 252 publications

(132 citation statements)

References 42 publications

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“…In the case of a live system reducing potential could be equal or greater depending on the metabolic capacity and inductive effect of the element itself in ionic or their NPs which in some cases leads to increased antioxidant capacity in the biological system (Juarez-Maldonado et al, 2013). The concentration of ions of the element or elements subject to biotransformation decreases more or less depending on the element concerned, of its chemical form and capacity reduction system (Haverkamp and Marshall, 2008) and found to efficiency biotransformation microorganisms can be as high as 88% of the initial concentration of the metal in ionic form or complex (Suresh et al, 2011). In the case of the use of live plants for biomanufacturing of NPs it found that species such as Brassica juncea and Medicago sativa can earn up to 3% of its dry weight in the form of silver nanoparticles, in times of 24-72 h, using a hydroponic solution containing 1 000 to 10 000 mg L -1 of AgNO 3 (Harris y Bali, 2007).…”

Section: Nanoparticles Biomanufacturingmentioning

confidence: 99%

Biofabricación de nanopartículas de metales usando células vegetales o extractos de plantas

Morales-Díaz

Juárez‐Maldonado²,

Morelos-Moreno

et al. 2017

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ResumenSe presenta una revisión acerca de la biofabricación de nanopartículas (NPs) de metales usando extractos vegetales, cultivos celulares de órganos o bien plantas vivas. Se describen los dos métodos de biofabricación verde de nanopartículas: el proceso bioquímico con extractos y el proceso biológico que involucra células vivas. Se discute el mecanismo redox de biofabricación de NPs, haciendo énfasis en aquellos puntos que requieren mayor dilucidación con el propósito de estandarizar los procesos para adaptarlos a un sistema industrial de producción. Se describe igualmente lo que se conoce acerca del destino de las NPs biofabricadas en células vivas, remarcando el proceso de movilización extra-e intracelular así como entre diferentes tejidos y órganos de la planta. Se discuten por último los factores que regulan la tasa de biofabricación de nanopartículas en las células y tejidos vivos, dirigiendo la atención hacia aquello que se necesita dominar para obtener biofábricas para la producción de NPs en donde la variabilidad de tamaño, forma y reactividad se ajusten a estándares industriales.Palabras clave: balance redox, bioproducción, bioreducción de metales, síntesis química verde. AbstractA review is presented on the biomanufacturing of nanoparticles (NPs) of metals using plant extracts, cell organ cultures or live plants. The two methods of manufacturing green nanoparticles are described: the biochemical process extracts and biological process involving living cells. The redox mechanism biomanufacturing of NPs is discussed, emphasizing those points that require further clarification in order to standardize processes to adapt to an industrial production system. It also describes what is known about the fate of NPs biomanufacturing in living cells, highlighting the process of extra-and intracellular as well as between different tissues and organs of the plant mobilization. Finally the factors discussed that regulate the rate of biomanufacturing of nanoparticles in living cells and tissues, directing attention to what you need to master to obtain bio-factories for the production of NPs where the variability in size, shape and reactivity fit to industry standards.

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Section: Nanoparticles Biomanufacturingmentioning

confidence: 99%

Biofabricación de nanopartículas de metales usando células vegetales o extractos de plantas

Morales-Díaz

Juárez‐Maldonado²,

Morelos-Moreno

et al. 2017

Remexca

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“…Related amide groups were observed in case of other bacteria such as Geobacillus stearothermophilus, Shewanella oniedensis, fungi Rhizopus oryzae and also in Actinomycetes Thermomonospora sp. [28][29][30][31]. It has been proposed that free amine groups of proteins bind to AuNP resulting in its stabilization [32].…”

Section: Ftir Analysismentioning

confidence: 99%

Kinetics of Synthesis of Gold Nanoparticles by Acinetobacter sp. SW30 Isolated from Environment

et al. 2016

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Cell biomass and metal salt concentration have great influence on morphology of biosynthesized nanoparticle. The aim of present study was to evaluate the effect of varying cell density and gold salt concentrations on synthesis of nanoparticles and its morphology, which has not been studied in bacteria till now. When cells of Acinetobacter sp. SW30 were incubated with different cell density and gold chloride concentrations, tremendous variation in color of colloidal solution containing gold nanoparticles (AuNP) was observed indicating variation in their size and shapes. Surprisingly, monodispersed spherical AuNP of size *19 nm were observed at lowest cell density and HAuCl 4 salt concentration while increase in cell number resulted in formation of polyhedral AuNP (*39 nm). Significance of this study lays in the fact that the shape and dispersity of AuNP can be customized depending up on the requirement. FTIR spectrum revealed shift from 3221 to 3196 cm -1 indicating the presence and role of amino acids in Au 3? reduction while possible involvement of amide I and II groups in stabilization of AuNP. The rate constant was calculated for cell suspension of 2.1 9 10 9 cfu/ml challenged with 1.0 mM HAuCl 4 , incubated at 30°C and pH 7 using the slopes of initial part of the plot log (A a -A t ) versus time as 1.99 9 10 -8 M.Also, this is the first study to report the kinetics of gold nanoparticle synthesis by Acinetobacter sp. SW30.

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“…An alternative approach to traditional synthetic chemistry is the biosynthesis of nanomaterials which employs natural organisms that reduce metal ions into stable nanoparticles. [9][10][11][12][13][14][15][16] Moreover, it should be borne in mind that there is ever increasing pressure to develop green, eco-friendly and economically-viable synthetic routes to nanomaterials. This has resulted in researchers turning towards biological organisms for inspiration.…”

mentioning

confidence: 99%

“…[9][10][11][12][13][14][15][16] Biosynthesized nanoparticles usually exhibit enhanced stability and afford better control over morphology. Furthermore, bio-based fabrication has been shown to be reproducible and includes the possibility of synthesizing hydrophilic nanoparticles.…”

mentioning

confidence: 99%

Bioinspired Magneto-optical Bacteria

et al. 2014

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Abstract. "Two-in-one" magneto-optical bacteria have been produced using the probiotic Lactobacillus fermentum ® for the first time. We took advantage of two features of bacteria to synthesize this novel and bifunctional nanostructure: their metal-reducing properties, to produce gold nanoparticles, and their capacity to incorporate maghemite nanoparticles at their external surface. The magnetooptical bacteria survive the process and behave as magnets at room temperature.

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Biofabrication of discrete spherical gold nanoparticles using the metal-reducing bacterium Shewanella oneidensis

Cited by 252 publications

References 42 publications

Biofabricación de nanopartículas de metales usando células vegetales o extractos de plantas

Biofabricación de nanopartículas de metales usando células vegetales o extractos de plantas

Kinetics of Synthesis of Gold Nanoparticles by Acinetobacter sp. SW30 Isolated from Environment

Bioinspired Magneto-optical Bacteria

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