Plant Extracts Promoted Preparation of Silver and Gold Nanoparticles: A Systematic Review

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2030001 ◽  
Author(s):  
Manobjyoti Bordoloi ◽  
Ranjan K. Sahoo ◽  
Kashyap J. Tamuli ◽  
Surovi Saikia ◽  
Partha P. Dutta
Keyword(s):  
Gold Nanoparticles ◽  
Physicochemical Properties ◽  
Metal Nanoparticles ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Biological Activities ◽  
Biological Effects ◽  
Metal Nanoparticle ◽  
High Rate ◽  
Silver And Gold Nanoparticles

Eco-friendly synthesis of metal nanoparticles has accrued utmost interest by researchers in the last decade for their distinct properties making them applicable in different fields of science and technology. With regard to its low cost, low environmental effect, zero contamination and higher reducing potential, their synthesis by green chemistry procedure is an emerging area in nanobiotechnology. Plant-based nanoparticles produced are more stable, with high rate of synthesis and are suitable for large scale biosynthesis as compared to the use of microorganisms which require stringent control on cell cultures. Plant-based nanoparticles have advantages over other methods due to presence of biomolecules acting both as capping and reducing agents by increasing the rate of reduction and stabilization of nanoparticles. Furthermore, secondary metabolites present in plants are used for reducing metal ions in single step reaction. In this review paper, we have cited 265 research articles and have outlined 106 plant extract assisted gold and silver nanoparticles. The present review highlights the achievements of metal nanoparticle synthesis, especially silver and gold nanoparticles from plant extracts, along with factors liable for the synthesis of metal nanoparticles. It also focuses on the dye degrading properties and various biological activities of metal nanoparticles, their antimicrobial mechanism of action and the physicochemical properties that influence the biological effects of metallic nanoparticles. Biological activities of metal nanoparticles were also described, including the effect of physicochemical properties of metal nanoparticles on biological activities.

scholarly journals Use of Bacteria and Microalgae in Synthesis of Nanoparticles

2012 ◽  
Vol 7 (2) ◽  
pp. 32-38
Author(s):  
Inga Zinicovscaia
Keyword(s):  
Gold Nanoparticles ◽  
Metal Nanoparticles ◽  
Size Distribution ◽  
Metallic Nanoparticles ◽  
Review Article ◽  
Ecological Chemistry ◽  
Silver And Gold Nanoparticles ◽  
Synthesis Of Nanoparticles ◽  
Distribution Shape

A critical need in the field of nanotechnology is the development of a reliable and eco-friendly process for synthesis of metallic nanoparticles. A number of different organisms, including bacteria, microalgae, yeast and fungi, have shown their ability to produce metal nanoparticles. But they have some drawbacks in providing better control over size distribution, shape and crystallinity. This review article presents an overview of microorganisms (bacteria and microalga) capable of producing silver and gold nanoparticles. This article is an extended abstract of a communication presented at the Conference Ecological Chemistry 2012.

scholarly journals Green Silver and Gold Nanoparticles: Biological Synthesis Approaches and Potentials for Biomedical Applications

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 844 ◽  
Author(s):  
Andrea Rónavári ◽  
Nóra Igaz ◽  
Dóra I. Adamecz ◽  
Bettina Szerencsés ◽  
Csaba Molnar ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Biomedical Applications ◽  
Biological Activities ◽  
Large Body ◽  
Chemical Properties ◽  
Biological Synthesis ◽  
Silver And Gold Nanoparticles ◽  
Comprehensive Collection ◽  
Synthetic Approaches ◽  
Physical And Chemical

The nanomaterial industry generates gigantic quantities of metal-based nanomaterials for various technological and biomedical applications; however, concomitantly, it places a massive burden on the environment by utilizing toxic chemicals for the production process and leaving hazardous waste materials behind. Moreover, the employed, often unpleasant chemicals can affect the biocompatibility of the generated particles and severely restrict their application possibilities. On these grounds, green synthetic approaches have emerged, offering eco-friendly, sustainable, nature-derived alternative production methods, thus attenuating the ecological footprint of the nanomaterial industry. In the last decade, a plethora of biological materials has been tested to probe their suitability for nanomaterial synthesis. Although most of these approaches were successful, a large body of evidence indicates that the green material or entity used for the production would substantially define the physical and chemical properties and as a consequence, the biological activities of the obtained nanomaterials. The present review provides a comprehensive collection of the most recent green methodologies, surveys the major nanoparticle characterization techniques and screens the effects triggered by the obtained nanomaterials in various living systems to give an impression on the biomedical potential of green synthesized silver and gold nanoparticles.

scholarly journals Biosynthesis and Potential Applications of Silver and Gold Nanoparticles and Their Chitosan-Based Nanocomposites in Nanomedicine

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Haliza Katas ◽  
Noor Zianah Moden ◽  
Chei Sin Lim ◽  
Terence Celesistinus ◽  
Jie Yee Chan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Metallic Nanoparticles ◽  
Cost Effective ◽  
One Pot ◽  
Silver And Gold Nanoparticles ◽  
Stabilizing Agents ◽  
Cost Effective Method ◽  
Multistep Process ◽  
Potential Applications ◽  
Biological Sources

Biosynthesized or biogenic metallic nanoparticles, particularly silver and gold nanoparticles (AgNPs and AuNPs, respectively), have been increasingly used because of their advantages, including high stability and loading capacity; moreover, these nanoparticles are synthesized using a green and cost-effective method. Previous studies have investigated reducing and/or stabilizing agents from various biological sources, including plants, microorganisms, and marine-derived products, using either a one-pot or a multistep process at different conditions. In addition, extensive studies have been performed to determine the biological or pharmacological effects of these nanoparticles, such as antimicrobial, antitumor, anti-inflammatory, and antioxidant effects. In the recent years, chitosan, a natural cationic polysaccharide, has been increasingly investigated as a reducing and/or stabilizing agent in the synthesis of biogenic metallic nanoparticles with potential applications in nanomedicine. Here, we have reviewed the mechanism of biosynthesis and potential applications of AgNPs and AuNPs and their chitosan-mediated nanocomposites in nanomedicine.

scholarly journals Green ultrasonic synthesis, Characterization and Antibacterial activity of Silver and Gold Nanoparticles mediated by Ganoderma lucidum extract

2020 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Cytotoxic Activities ◽  
Gold And Silver Nanoparticles ◽  
Silver And Gold Nanoparticles ◽  
E Coli ◽  
Inhibition Zones

Metal nanoparticles possess an extensive scientific and technological significance due to their unique physiochemical properties and their potential applications in different fields like medicine. Silver and gold nanoparticles have shown to have antibacterial and cytotoxic activities. Conventional methods used in the synthesis of the metal nanoparticles involve use of toxic chemicals making them unsuitable for use in medical field. In our continued effort to explore for simple and eco-friendly methods to synthesize the metal nanoparticles, we here describe synthesis and characterization of gold and silver nanoparticles using Gonaderma lucidum, wild non-edible medicinal mushroom. G. lucidum mushroom contain bioactive compounds which can be involved in the reduction, capping and stabilization of the nanoparticles. Antibacterial activity analysis was done on E. coli and S. aureus. The synthesis was done on ultrasonic bath. Characterization of the metal nanoparticles was done by UV-VIS., High Resolution Transmission Electron Microscope (HRTEM) and FTIR. HRTEM analysis showed that both silver and gold nanoparticles were spherical in shape with an average size of 15.82±3.69 nm for silver and 24.73±5.124nm for gold nanoparticles (AuNPs). FTIR analysis showed OH and -C=C- stretching vibrations, an indication of presence of functional groups of biomolecules capping both gold and silver nanoparticles. AgNPs showed inhibition zones of 15.5±0.09mm and 13.3±0.14mm while AuNPs had inhibition zones of 14.510±0.35 and 13.3±0.50mm on E. coli and S. aureus respectively. The findings indicate the potential use of AgNPs and AuNPs in development of drugs in management of pathogenic bacteria.

Phyto-synthesized Gold Nanoparticles as Antitumor Agents

2020 ◽  
Vol 08 ◽  
Author(s):  
Eugenia Dumitra Teodor ◽  
Gabriel Lucian Radu
Keyword(s):  
Gold Nanoparticles ◽  
Medicinal Plant ◽  
Plant Extracts ◽  
Antitumor Agents ◽  
Antiinflammatory Activity ◽  
Biological Effects ◽  
Selective Cytotoxicity ◽  
Medicinal Plant Extracts

Background:: Phyto, or plant-derived metal nanoparticles are an interesting and intensive studied group of green synthesized nanoparticles. In the last decade, numerous medicinal plant extracts were used to the synthesis of stable gold or silver nanoparticles with diverse biological effects, such as antioxidant activity, antimicrobial activity, antiinflammatory activity, hypoglycemic effect, antitumor activity and catalytic activity. Results:: This review has systematized and discussed information from the last 5 years about the research regarding antitumor/anticancer potential of gold nanoparticles obtained via medicinal plant extracts, with special attention on their selective cytotoxicity on tumor cells and on their mechanism of action, in vitro and in vivo assessments. Conclusion:: Much more in vivo and clinical studies are needed before considering phyto-synthesized gold nanoparticles as significant for future medicine.

Therapeutic Potential of Algal Nanoparticles: A brief review

2021 ◽  
Vol 24 ◽  
Author(s):  
Pallavi Singh Chauhan ◽  
Dhananjay Yadav ◽  
Jun O Jin
Keyword(s):  
Medical Diagnosis ◽  
Metallic Nanoparticles ◽  
Therapeutic Potential ◽  
Biological Activities ◽  
Green Technology ◽  
Simple Approach ◽  
Metal Nanoparticle ◽  
Innovative Technology ◽  
Biogenic Synthesis ◽  
Environmental Friendly

: Recently, the green synthesis of metallic nanoparticles has received tremendous attention as it is a simple approach. The green pathway of biogenic synthesis of metallic nanoparticles through microbes may provide a sustainable and environmental friendly protocol. Green technology is the most innovative technology for various biological activities with no such toxic effect. Reports have shown that algae-mediated synthesis of metal nanoparticles. Algae are widely used for biosynthesis as they grow fast, they handle their biomass on average ten times than plants and easily experimented. In future the production of metal nanoparticle through the use of different microalgae and their biological activity can be explored in different areas such as catalytic, medical diagnosis and antibiofilm applications.

Surfactant-free solution-based synthesis of metallic nanoparticles toward efficient use of the nanoparticles’ surfaces and their application in catalysis and chemo-/biosensing

2013 ◽  
Vol 2 (1) ◽  
pp. 5-25 ◽  
Author(s):  
Hideya Kawasaki
Keyword(s):  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Active Sites ◽  
Metal Nanoparticle ◽  
Molar Ratio ◽  
Synthesis Methods ◽  
Ionization Mass ◽  
Free Solution ◽  
Effective Utilization ◽  
Stabilizing Agents

AbstractThe choice of stabilizer and the stabilizer-to-precursor ions molar ratio during metal nanoparticle synthesis are important for controlling the shape, size, and dispersion stability of the nanoparticles. However, the active sites on the nanoparticles surfaces may be blocked by the stabilizing agents used, resulting in a less-than-effective utilization of the surfaces. In this review, various surfactant-free solution-based methods of synthesizing metal nanoparticles are described, along with the applications of such nanoparticles in catalysis and sensing. “Surfactant-free” synthesis does not imply truly bare metal nanoparticles synthesis but implies one where the metal nanoparticles are prepared in the absence of additional stabilizing agents such as thiolate and phosphine compounds, surfactants, and polymers. These metal nanoparticles are stabilized by the solvents or the simple ions of the reducing agents or low-molecular-weight salts used. Surfactant-free synthesis of metal nanoparticles via photochemical-, ultrasonochemical-, and laser ablation-mediated synthesis methods is also described. Because of the effective utilization of their surfaces, metal nanoparticles prepared without surfactants, polymers, templates, or seeds are expected to exhibit high performance when used in catalysis (synthetic catalysis and electrocatalysis) and sensing (surface-enhanced Raman scattering (SERS)), surface-assisted laser desorption/ionization-mass spectrometry (SALDI-MS)).

scholarly journals σ-Holes and σ-lumps direct the Lewis basic and acidic interactions of noble metal nanoparticles: introducing regium bonds

2018 ◽  
Vol 20 (4) ◽  
pp. 2676-2692 ◽  
Author(s):  
Joakim Halldin Stenlid ◽  
Adam Johannes Johansson ◽  
Tore Brinck
Keyword(s):  
Gold Nanoparticles ◽  
Charge Transfer ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Silver And Gold Nanoparticles ◽  
Acidic Sites

Using local DFT-based probes for electrostatic as well as charge transfer/polarization interactions, we are able to characterize Lewis basic and acidic sites on copper, silver and gold nanoparticles.

Moxifloxacin-capped noble metal nanoparticles as potential urease inhibitors

2015 ◽  
Vol 39 (10) ◽  
pp. 8080-8086 ◽  
Author(s):  
Muhammad Nisar ◽  
Shujaat Ali Khan ◽  
Muhammad Raza Shah ◽  
Ajmal Khan ◽  
Umar Farooq ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Noble Metal Nanoparticles ◽  
Urease Inhibitors ◽  
Urease Inhibition ◽  
Silver And Gold Nanoparticles

The fluoroquinolone drug moxifloxacin (Mox) has been used to protect silver and gold nanoparticles. The nano-conjugates exhibited urease inhibition and antibacterial activity.

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