Antibacterial potential of biosynthesized silver nanoparticles using phycocyanin of freshwater cyanobacterium Oscillatoria pseudogeminata

2021 ◽  
Author(s):  
Thangaraj Ramasamy ◽  
Thajuddin Nooruddin
Keyword(s):  
Silver Nanoparticles ◽  
Freshwater Cyanobacterium ◽  
Antibacterial Potential

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 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

Catalytic and synergistic antibacterial potential of green synthesized silver nanoparticles: Their ecotoxicological evaluation onPoecillia reticulata

2014 ◽  
Vol 61 (4) ◽  
pp. 385-394 ◽  
Author(s):  
Hemant P. Borase ◽  
Chandrashekhar D. Patil ◽  
Rahul B. Salunkhe ◽  
Rahul K. Suryawanshi ◽  
Bipinchandra K. Salunke ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Ecotoxicological Evaluation ◽  
Green Synthesized Silver Nanoparticles ◽  
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.

A Novel Green Biogenic Synthesis of Silver Nanoparticles using Tabebuia rosea (Bertol.) DC Fruit Extract and Its Antioxidant and Antibacterial Potential

2021 ◽  
Vol 14 (1) ◽  
pp. 5323-5333
Author(s):  
Dr. Guru Kumar Dugganaboyana ◽  
Ramya Jayendra ◽  
Arpitha Narayan ◽  
Meghana Siddappa Konasur
Keyword(s):  
Silver Nanoparticles ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Fruit Extract ◽  
Synthesis Of Nanoparticles ◽  
Drug Molecules ◽  
Agar Disc ◽  
Tabebuia Rosea ◽  
Average Size ◽  
Antibacterial Potential

Plant based synthesis of nanoparticles has generated worldwide interest because of cost-effectiveness, eco-friendly nature and abundance of applications. In the present investigation , antimicrobial potential of silver nanoparticles (AgNPs) of aqueous extract of Tabebuia rosea (Bertol.) DC (T. rosea) fruit extract has been investigated. Agar disc diffusion method was used for determining the antimicrobial activity of selected aqueous fruit extract AgNPs. Phytochemical analysis of aqueous fruit extract of T. rosea fruit revealed the presence of alkaloids, flavonoids, tannins, phenols, carbohydrates, glycosides, Vitamin-C, proteins and terpenoids. AgNPs synthesis using T. rosea aqueous fruit extract and characterized by UV-Visible spectroscopy showed a peak at 420 nm and average size of 82.9 nm, FT-IR analysis, dynamic light scattering, scanning electron microscope, EDX and X-ray diffraction analysis. Evaluation of antibacterial activity of green synthesized AgNPs recorded the more potent activity against selected human bacterial pathogens. The results obtained indicated that the fruit extract of T. rosea as well as AgNPs have strong and effective antibacterial potential that provide marvelous source for the development of new drug molecules of herbal origin which may be used for the welfare of humanity.

Antibacterial potential of silver nanoparticles against multidrug resistant bacterial isolates from blood cultures

2020 ◽  
Vol 50 (11) ◽  
pp. 1150-1156
Author(s):  
Jogender Tanwar ◽  
Madhu Sharma ◽  
Aparna Parmar ◽  
Nimisha Tehri ◽  
Neelam Verma ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Multidrug Resistant ◽  
Blood Cultures ◽  
Bacterial Isolates ◽  
Antibacterial Potential

scholarly journals Comparative antibacterial potential of silver nanoparticles prepared via chemical and biological synthesis

2020 ◽  
Vol 13 (12) ◽  
pp. 8662-8670
Author(s):  
Dafne P. Ramírez Aguirre ◽  
Erika Flores Loyola ◽  
Norma M. De la Fuente Salcido ◽  
Lucio Rodríguez Sifuentes ◽  
Agustina Ramírez Moreno ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Biological Synthesis ◽  
Antibacterial Potential
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