Green and Bio-Mechanochemical Approach to Silver Nanoparticles Synthesis, Characterization and Antibacterial Potential

2020 ◽  
pp. 145-183
Author(s):  
Matej Baláž ◽  
Zdenka Bedlovičová ◽  
Mária Kováčová ◽  
Aneta Salayová ◽  
Ľudmila Balážová
Keyword(s):  
Silver Nanoparticles ◽  
Nanoparticles Synthesis ◽  
Antibacterial Potential

Guanidinium and phosphonium scaffolds loaded with silver nanoparticles: synthesis, characterization, in vitro assessment of the antibacterial potential and toxicity

2021 ◽  
Author(s):  
M. N. Gorbunova ◽  
L.M. Lemkina ◽  
A.I. Nechaev
Keyword(s):  
Escherichia Coli ◽  
Silver Nanoparticles ◽  
Uv Spectroscopy ◽  
Planktonic Cells ◽  
Silver Nanocomposites ◽  
Nanoparticles Synthesis ◽  
In Vitro Assessment ◽  
Xrd Techniques ◽  
Antibacterial Potential

Abstract New silver nanocomposites based on polysulfones of 2,2-diallyl-1,1,3,3-tetraethylguanidiniumchloride [poly(AGC-SO2)], tris(diethylamino)diallylaminophosphonium tetrafluoroborate [poly(DAAP-BF4-SO2)] and chloride [poly(DAAP-Cl-SO2)] have been developed. UV- spectroscopy, SEM and XRD techniques were used to characterize the formation of silver nanoparticles in copolymers. Antibacterial action of new silver nanocomposites on S. epidermidis 33 and Escherichia coli (planktonic cells and biofilms) was studied. The silver nanocomposites strongly inhibited biofilms formation of S. epidermidis 33 and Escherichia coli. The silver nanocomposites based on phosphonium polysulfones have a significant cytotoxic activity against RD and MS line cells.

scholarly journals Characterization and Antibacterial Response of Silver Nanoparticles Biosynthesized Using an Ethanolic Extract of Coccinia indica Leaves

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 97
Author(s):  
Suresh V. Chinni ◽  
Subash C. B. Gopinath ◽  
Periasamy Anbu ◽  
Neeraj Kumar Fuloria ◽  
Shivkanya Fuloria ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Zeta Potential ◽  
Ethanolic Extract ◽  
Spherical Shape ◽  
Bacterial Strains ◽  
X Ray ◽  
Coccinia Indica ◽  
Antibacterial Potential

The present study was planned to characterize and analyze the antimicrobial activity of silver nanoparticles (AgNP) biosynthesized using a Coccinia indica leaf (CIL) ethanolic extract. The present study included the preparation of CIL ethanolic extract using the maceration process, which was further used for AgNP biosynthesis by silver nitrate reduction. Biosynthetic AgNPs were characterized using UV–Visible spectrometry, zeta potential analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDX) spectrometry. The biogenic AgNP and CIL extracts were further investigated against different bacterial strains for their antimicrobial activity. The surface plasmon resonance (SPR) signal at 425 nm confirmed AgNP formation. The SEM and TEM data revealed the spherical shape of biogenic AgNPs and size in the range of 8 to 48 nm. The EDX results verified the presence of Ag. The AgNPs displayed a zeta potential of −55.46 mV, suggesting mild AgNP stability. Compared to Gram-positive bacteria, the biogenic AgNPs demonstrated high antibacterial potential against Gram-negative bacteria. Based on the results, the current study concluded that AgNPs based on CIL extract have strong antibacterial potential, and it established that AgNP biosynthesis using CIL ethanol extract is an effective process.

scholarly journals Silver nanoparticles: Synthesis, medical applications and biosafety

Theranostics ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 8996-9031 ◽  
Author(s):  
Li Xu ◽  
Yi-Yi Wang ◽  
Jie Huang ◽  
Chun-Yuan Chen ◽  
Zhen-Xing Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Medical Applications ◽  
Nanoparticles Synthesis

scholarly journals Antibacterial potential of biosynthesised silver nanoparticles using Avicennia marina mangrove plant

2011 ◽  
Vol 2 (2) ◽  
pp. 143-147 ◽  
Author(s):  
M. Gnanadesigan ◽  
M. Anand ◽  
S. Ravikumar ◽  
M. Maruthupandy ◽  
M. Syed Ali ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Avicennia Marina ◽  
Mangrove Plant ◽  
Antibacterial Potential

Green Route for Silver Nanoparticles Synthesis by Raphanus Sativus Extract in a Continuous Flow Tubular Microreactor

2017 ◽  
Vol 16 (01) ◽  
pp. 1650019 ◽  
Author(s):  
P. D. Jolhe ◽  
B. A. Bhanvase ◽  
V. S. Patil ◽  
S. H. Sonawane
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Continuous Flow ◽  
Raphanus Sativus ◽  
Transfer Rate ◽  
Silver Ions ◽  
Solute Transfer ◽  
Green Route ◽  
Nanoparticles Synthesis ◽  
Green Synthesized Silver Nanoparticles

The present work deals with the investigation of the greener route for the production of silver nanoparticles using Raphanus sativus (R. sativus) bioextract in a continuous flow tubular microreactor. The parameters affecting the particle size and distribution were investigated. From the results obtained it can be inferred that the ascorbic acid (reducing agent) present in the R. sativus bioextract is responsible for the reduction of silver ions. At optimum condition, the particle size distribution of nanoparticles is found between 18[Formula: see text]nm and 39[Formula: see text]nm. The absorbance value was found to be decreased with an increase in the diameter of the microreactor. It indicates that a number of nuclei are formed in the micrometer sized (diameter) reactor because of the better solute transfer rate leading to the formation of large number of silver nanoparticles. The study of antibacterial activity of green synthesized silver nanoparticles shows effective inhibitory activity against waterborne pathogens, Shegella and Listeria bacteria.

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