A Review: Biological Synthesis Of Silver and Copper Nanoparticles

Varshney, Ratnika; Bhadauria, Seema; Gaur, M. S.

doi:10.5101/nbe.v4i2.p99-106

Cited by 78 publications

(48 citation statements)

References 63 publications

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“…The reduction of silver ions and the formation of stable nanoparticles occurred on 4 th day to synthesize silver nanoparticles. The interaction between nanoparticles and biomolecules have been studied through several analysis and found that, various terpenoids or alkaloids present in the plant extracts caused the bioreduction of metal ions and stabilization of AgNPs [13]. The plant assisted reduction due to phytochemicals are considered to be the main mechanism for the synthesis of nanoparticles.…”

Section: Uv-vis Spectral Studiesmentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles Using Cosmos Sulphureus and Evaluation of Their Antimicrobial and Antioxidant Properties

Malaka¹,

Hema²,

Muthukumarasamy³

et al. 2016

Nano BioMed ENG

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The present study intended to synthesize, characterize silver nanoparticles (AgNPs) using Cosmos sulphureus (Cs) aqueous leaf extract and their antimicrobial and antioxidant activities. The UV-vis spectrophotometer exhibited an absorbance peak around 430-440 nm with color intensity from yellow to reddish brown after 4 days. SEM and EDX analysis showed AgNPs were pure and polydispersed and the size were ranging from 55 to 80 nm. XRD revealed that the nanoparticles were cubic and face centered in shape and the biogenic CsAgNPs showed effective potent antimicrobial and antioxidant activities. This study may serve as a tool for analyzing the controlled release of synthesized AgNPs, which have prospective role in the field of disease management particularly with respect to resistant pathogenic microorganisms.

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Section: Uv-vis Spectral Studiesmentioning

confidence: 99%

“…Biosynthesis of silver nanoparticles has advantages like slower kinetics, better manipulation and control over crystal growth and excellent stability [13]. But, microbial mediated synthesis of AgNPs is not industrially achievable as they need high maintenance of aseptic conditions.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticles Using Cosmos Sulphureus and Evaluation of Their Antimicrobial and Antioxidant Properties

Malaka¹,

Hema²,

Muthukumarasamy³

et al. 2016

Nano BioMed ENG

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“…In recent years, green methods have attained tremendous attention in synthesis of pure or oxide MNPs [24][25][26][27]. However, not real green nature of these methods is a major problem [28]. Generally, plant and bacteria are two important sources for green synthesis of NPs [29,30].…”

Section: Introductionmentioning

confidence: 99%

Effect of Incubation Time, CuSO4 and Glucose Concentrations on Biosynthesis of Copper Oxide (CuO) Nanoparticles with Rectangular Shape and Antibacterial Activity: Taguchi Method Approach

Rad¹,

Taran²,

Alavi³

2018

Nano BioMed ENG

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In nanotechnology, using of metallic nanoparticles (MNPs) has obtained major attention for over a century because of their unique properties in nano scale. In this paper, the effect of three factors (incubation time, concentrations of copper sulfate and glucose) on the biosynthesis of copper (II) oxide nanoparticles (CuO NPs) by Halomonas elongata IBRC-M 10214 and the antibacterial activity of nanoparticles were evaluated. Experiment design and analysis of Taguchi method were carried out by Qualitek-4 software. Effect of CuSO4 concentration (1.4, 2.8 and 5.6 mM), incubation time (48, 72 and 96 h) as three different levels was measured as three major factors in the biosynthesis of metallic nanoparticles. Synthesized CuO nanoparticles were characterized by utilizing ultraviolet-visible (UVVis) spectroscopy, X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) spectroscopy and field emission scanning electron microscope (FESEM) techniques. Among the three factors, results illustrated that considerable effect was related to CuSO 4 concentration. These analyses demonstrated that the average CuO nanoparticles crystalline size was 57-79 nm with rectangular shape. Also, for evaluating of antibacterial effects, maximum zone of inhibition, two important multidrug resistant pathogenesis bacteria, Escherichia coli ATCC 25922, and Staphylococcus aureus ATCC 43300 were used. Antibacterial assay of CuO nanoparticles showed antibacterial activity toward the pathogenic bacterial strains of E. coli by 5 mm and S. aureus by 5.5 mm for maximum zone of inhibition. In conclusion, this study presented simple, low expensive, eco-friendly and high productivity in the fabrication of CuO nanoparticles. In addition, these metallic nanoparticles had antibacterial effect that could be usable in medicinal aspect for fighting against prominent pathogen bacteria such as E. coli ATCC 25922 and S. aureus ATCC 43300.

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“…Consequently, there has been considerable interest in developing methods for the biosynthesis of copper NPs as an alternative to physical and chemical methods. A literature review [11] revealed only few studies on the biosynthesis of copper NPs using fungi and none of the studies has used the yeast Rhodotorula mucilaginosa (R. mucilaginosa). On the other hand, several studies have investigated the biosynthesis of copper NPs using bacteria, for example, Hasan et al [12], Ramanathan et al [13], Singh et al [14] among others.…”

Section: Introductionmentioning

confidence: 99%

- Biodegradability of Oily Wastewater Using Rotating Biological Contactor Combined with an External Membrane

Monsalvo¹

2015

Ecological Technologies for Industrial Wastewater Management

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In this study was developed a natural process using a biological system for the biosynthesis of nanoparticles (NPs) and possible removal of copper from wastewater by dead biomass of the yeast Rhodotorula mucilaginosa. Dead and live biomass of Rhodotorula mucilaginosa was used to analyze the equilibrium and kinetics of copper biosorption by the yeast in function of the initial metal concentration, contact time, pH, temperature, agitation and inoculum volume. Dead biomass exhibited the highest biosorption capacity of copper, 26.2 mg g 21 , which was achieved within 60 min of contact, at pH 5.0, temperature of 30uC, and agitation speed of 150 rpm. The equilibrium data were best described by the Langmuir isotherm and Kinetic analysis indicated a pseudo-second-order model. The average size, morphology and location of NPs biosynthesized by the yeast were determined by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM). The shape of the intracellularly synthesized NPs was mainly spherical, with an average size of 10.5 nm. The X-ray photoelectron spectroscopy (XPS) analysis of the copper NPs confirmed the formation of metallic copper. The dead biomass of Rhodotorula mucilaginosa may be considered an efficiently bioprocess, being fast and low-cost to production of copper nanoparticles and also a probably nano-adsorbent of this metal ion in wastewater in bioremediation process.

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A Review: Biological Synthesis Of Silver and Copper Nanoparticles

Cited by 78 publications

References 63 publications

Green Synthesis of Silver Nanoparticles Using Cosmos Sulphureus and Evaluation of Their Antimicrobial and Antioxidant Properties

Green Synthesis of Silver Nanoparticles Using Cosmos Sulphureus and Evaluation of Their Antimicrobial and Antioxidant Properties

Effect of Incubation Time, CuSO4 and Glucose Concentrations on Biosynthesis of Copper Oxide (CuO) Nanoparticles with Rectangular Shape and Antibacterial Activity: Taguchi Method Approach

- Biodegradability of Oily Wastewater Using Rotating Biological Contactor Combined with an External Membrane

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