Biotechnological Routes to Metallic Nanoparticles Production: Mechanistic Aspects, Antimicrobial Activity, Toxicity and Industrial Applications

Durán, Nélson; Marcato, Priscyla D.

doi:10.1007/978-3-642-24428-5_12

Cited by 22 publications

(13 citation statements)

References 112 publications

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“…The obtained Ag/AgCl nanoparticles have a size distribution with a mean diameter of 55 ± 18 nm, from the TEM image (The total number of particles counted for the histogram was 198). This, it was different from DLS measurement, since in that case the hydrodynamic radius was measured that as it is known protein capped the silver nanoparticles (89 nm with a zeta potential of -26.5 mV) [17, 25,26], and showing excellent antibacterial activities [27][28][29].…”

Section: Resultsmentioning

confidence: 96%

Silver nanoparticles/silver chloride (Ag/AgCl) synthesized from Fusarium oxysporum acting against Klebsiella pneumouniae carbapenemase (KPC) and extended spectrum beta-lactamase (ESBL)

Picoli¹,

Durán²,

Andrade³

2016

Front Nanosci Nanotech

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Silver nanoparticles/silver chloride (Ag/AgCl) biogenically synthesized acted efficiently on all the bacteria that produced beta-lactamases (Extended Spectrum beta-lactamase-ESBL or Klebsiella pneumoniae carbapenemase-KPC). The presence of imipenem (IPM)/Ag/AgCl showed synergism between the IPM antibiotic and Ag/AgCl nanoparticles. The results obtained with E. coli wild type and beta-lactamases producing bacteria reinforced the potentiality of silver nanoparticles on beta-lactamase enzymes, since E. coli is free of any beta-lactamase enzymatic mechanism, and it was not observed any alteration in the IPM zone inhibition with the silver nanoparticles. The study of biogenic nanoparticles efficacy against resistant microorganism is very important due to progressive increase of antibiotic resistant bacteria.

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Section: Resultsmentioning

confidence: 96%

Silver nanoparticles/silver chloride (Ag/AgCl) synthesized from Fusarium oxysporum acting against Klebsiella pneumouniae carbapenemase (KPC) and extended spectrum beta-lactamase (ESBL)

Picoli¹,

Durán²,

Andrade³

2016

Front Nanosci Nanotech

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“…Additionally, the merits of green (or environmentally friendly) approaches include cost effectiveness, and the resulting MNPs are biocompatible for application in in vitro and in vivo systems. Diverse biological entities have been used to produce MNPs, such as gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), cadmium NPs, copper NPs, iron NPs, palladium NPs, platinum NPs, selenium NPs, tellurium NPs, and titanium NPs (Duran and Marcato 2012). The most frequently employed biological entities are amino acids, peptides, fungi, bacteria, plant extracts, algae, polysaccharides, and yeast (Park et al 2011;Duran and Marcato 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Diverse biological entities have been used to produce MNPs, such as gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), cadmium NPs, copper NPs, iron NPs, palladium NPs, platinum NPs, selenium NPs, tellurium NPs, and titanium NPs (Duran and Marcato 2012). The most frequently employed biological entities are amino acids, peptides, fungi, bacteria, plant extracts, algae, polysaccharides, and yeast (Park et al 2011;Duran and Marcato 2012). Among the various biological entities, the primary and secondary metabolites of plants are very attractive for use in the green synthesis of MNPs.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of gold and silver nanoparticles using gallic acid: catalytic activity and conversion yield toward the 4-nitrophenol reduction reaction

et al. 2016

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In the present report, gallic acid was used as both a reducing and stabilizing agent to synthesize gold and silver nanoparticles. The synthesized gold and silver nanoparticles exhibited characteristic surface plasmon resonance bands at 536 and 392 nm, respectively. Nanoparticles that were approximately spherical in shape were observed in high-resolution transmission electron microscopy and atomic force microscopy images. The hydrodynamic radius was determined to be 54.4 nm for gold nanoparticles and 33.7 nm for silver nanoparticles in aqueous medium. X-ray diffraction analyses confirmed that the synthesized nanoparticles possessed a face-centered cubic structure. FT-IR spectra demonstrated that the carboxylic acid functional groups of gallic acid contributed to the electrostatic binding onto the surface of the nanoparticles. Zeta potential values of -41.98 mV for the gold nanoparticles and -53.47 mV for the silver nanoparticles indicated that the synthesized nanoparticles possess excellent stability. On-the-shelf stability for 4 weeks also confirmed that the synthesized nanoparticles were quite stable without significant changes in their UV-visible spectra. The synthesized nanoparticles exhibited catalytic activity toward the reduction reaction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. The rate constant of the silver nanoparticles was higher than that of the gold nanoparticles in the catalytic reaction. Furthermore, the conversion yield (%) of 4-nitrophenol to 4-aminophenol was determined using reversed-phase high-performance liquid chromatography with UV detection at 254 nm. The silver nanoparticles exhibited an excellent conversion yield (96.7-99.9 %), suggesting that the synthesized silver nanoparticles are highly efficient catalysts for the 4-nitrophenol reduction reaction.

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“…Copper as a metal or copper oxides exhibit broadspectrum biocidal activity, and several studies during the last two years found that copper demonstrates remarkable antibacterial activity at the nanoscale [8][9][10][11][12][13][14]. In contrast to silver nanoparticles, which have been studied extensively for antibacterial application [5][6][7][15][16][17], copper is an essential element for living organisms and may be suitable for biomedical applications [18]. It is important to note that copper is approximately 10-fold cheaper than silver in the market, and therefore, a method utilizing copper would prove to be quite cost-effective [19].…”

Section: Introductionmentioning

confidence: 99%

Extracellular Biosynthesis of Copper and Copper Oxide Nanoparticles by Stereum hirsutum, a Native White‐Rot Fungus from Chilean Forests

Cuevas

Durán

Díez

et al. 2015

Journal of Nanomaterials

191

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The white-rot fungusStereum hirsutumwas studied to evaluate its applicability for use in the biosynthesis of copper/copper oxide nanoparticles under different pH conditions and in the presence of three different copper salts (CuCl2, CuSO4, and Cu(NO3)2). The nanoparticle formation was evaluated by UV-visible spectroscopy, electron microscopy (TEM), X-ray diffraction analysis (XRD), and Fourier transforms infrared spectroscopy (FTIR). The nanoparticles biosynthesis in presence of all copper salts demonstrated higher formation with 5 mM CuCl2under alkaline conditions. TEM analysis confirmed that the nanoparticles were mainly spherical (5 to 20 nm). The presence of amine groups attached to nanoparticles was confirmed by FTIR, which suggests that extracellular protein of fungus is responsible for the formation of the nanoparticles. Therefore, the white-rot fungusS. hirsutumwas found to exhibit potential for use in the synthesis of copper/copper oxide nanoparticles.

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Biotechnological Routes to Metallic Nanoparticles Production: Mechanistic Aspects, Antimicrobial Activity, Toxicity and Industrial Applications

Cited by 22 publications

References 112 publications

Silver nanoparticles/silver chloride (Ag/AgCl) synthesized from Fusarium oxysporum acting against Klebsiella pneumouniae carbapenemase (KPC) and extended spectrum beta-lactamase (ESBL)

Silver nanoparticles/silver chloride (Ag/AgCl) synthesized from Fusarium oxysporum acting against Klebsiella pneumouniae carbapenemase (KPC) and extended spectrum beta-lactamase (ESBL)

Green synthesis of gold and silver nanoparticles using gallic acid: catalytic activity and conversion yield toward the 4-nitrophenol reduction reaction

Extracellular Biosynthesis of Copper and Copper Oxide Nanoparticles by Stereum hirsutum, a Native White‐Rot Fungus from Chilean Forests

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