Silver Nano Particle (Ag-NPs) Effect on Salmonella and E. coli Isolated from Food

2021 ◽  
Vol 71 (2) ◽  
pp. 7
Author(s):  
Abeer Nofal ◽  
Helmy Tork ◽  
Rasha Tawfik
Keyword(s):  
Nano Particle ◽  
Ag Nps ◽  
E Coli ◽  
Silver Nano Particle

scholarly journals Antibacterial Screening on Leaves of Argyreia Cymosa Roxb. Against Pathogenic Bacteria Isolated from Infected Pateints Samples Wound, Sputum and Stool

2014 ◽  
Vol 2 (3) ◽  
pp. 279-282 ◽  
Author(s):  
N. Packialakshmi ◽  
H. Fazila Beevi
Keyword(s):  
Antibacterial Activity ◽  
Silver Nanoparticle ◽  
Pathogenic Bacteria ◽  
Leaf Extract ◽  
Maximum Activity ◽  
Nano Particle ◽  
E Coli ◽  
Antibacterial Screening ◽  
Aqueous Leaf Extract ◽  
Silver Nano Particle

The present study deals with the aqueous leaf extract and synthesized silver nanoparticle of Argyreia cymosa (Roxb) were evaluated for antibacterial activity. The aqueous leaf extract and synthesized nanoparticle of Argyreia cymosa is active against E. coli, P. aeruginosa, Bacillus and S. aureus. The aqueous leaf extract showed maximum activity against Bacillus (20mm), S.aureus (18mm), P. aeruginosa (13mm) E.coli (12mm) and the synthesized silver nano particle showed maximum activity against Bacillus (27mm), E. coli (21mm) , S. aureus (12mm) and P. aeruginosa (11mm). DOI: http://dx.doi.org/10.3126/ijasbt.v2i3.10935Int J Appl Sci Biotechnol, Vol. 2(3): 279-282  

Histopathological Changes during Infected Wound Healing in Cow Calves by the Use of Silver Nano Particle Gel and Povidone Iodine

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Yogendra Singh ◽  
B. P. Shukla, ◽  
Supriya Shukla, ◽  
Reshma Jain ◽  
Aditya P. Jaiswal
Keyword(s):  
Povidone Iodine ◽  
Treated Group ◽  
Time Interval ◽  
Nano Particle ◽  
Infected Wound ◽  
Histopathological Changes ◽  
Group I ◽  
Infected Wounds ◽  
Group Ii ◽  
Silver Nano Particle

The present study was conducted on 12 cow calves with infected wounds, irrespective of sex and breed, divided into two groups having 6 cow calves each. The animals of group I were treated with silver nano particle gel and the animals of group II were treated with povidone iodine dressing for 7 consecutive days. Histopathological changes were recorded at different time interval in both the groups. Studies revealed that there was marked re-epitheliazation and hyperplasia with considerable thickening of epidermis and large amount of collagen deposition in granulation tissue in group I as compared to group II. Histopatathological findings clearly suggest that the group treated with silver nano particle gel showed better and faster healing of wound as compared to povidone iodine treated group. Therefore clinical use of silver nano particle gel can be advocated for wound dressing in cow calves.

scholarly journals Green approach in gold, silver and selenium nanoparticles using coffee bean extract

2020 ◽  
Vol 5 (1) ◽  
pp. 761-767
Author(s):  
Reiyhaneh Abbasian ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Spherical Shape ◽  
Coffee Bean ◽  
Hydrothermal Conditions ◽  
Ag Nps ◽  
Au Nps ◽  
Stabilizing Agents ◽  
E Coli ◽  
Green Approach ◽  
Gold Silver ◽  
Ft Ir

AbstractGreen fabrication of metal nanoparticles (NPs), using natural reducing and stabilizing agents existed in plants and their derivatives, due to their unique properties, has gained more attention. The present study focuses on the synthesis of gold (Au), silver (Ag) and selenium (Se) NPs using coffee bean extract under hydrothermal conditions (1.5 atm and 121°C, for 15 min). Coffee bean extract obtained in 2 h processing using Clevenger apparatus and Fourier transform-infrared (FT-IR) spectroscopy indicated five highlighted peaks, namely, hydroxyl, amide, aromatic, alkane and ring groups. Dynamic light scattering analysis revealed that among three different NPs formed, fabricated Ag NPs had small particle size (153 nm) and high zeta potential value (16.8 mV). However, synthesized Au NPs had minimum polydispersity index (0.312). Results also indicated that fabricated Au, Se and Ag NPs had low antioxidant activity with values of 9.1, 8.9 and 8.7%, respectively. Morphological and antibacterial activity assessments, demonstrated that synthesized Ag, Au and Se NPs had spherical shape and high bactericidal activity against E. coli and S. aurous. Obtained results indicated that the synthesized NPs, can be utilized in various areas.

scholarly journals A Surface Dielectric Barrier Discharge Plasma for Preparing Cotton-Fabric-Supported Silver Nanoparticles

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 961 ◽  
Author(s):  
Zhiyuan Fan ◽  
Lanbo Di ◽  
Xiuling Zhang ◽  
Hongyang Wang
Keyword(s):  
Silver Nanoparticles ◽  
Dielectric Barrier Discharge ◽  
Cotton Fabric ◽  
Barrier Discharge ◽  
Dbd Plasma ◽  
Ag Nps ◽  
Dielectric Barrier ◽  
E Coli ◽  
Plasma Method ◽  
Surface Dielectric Barrier Discharge

Cotton-fabric-supported silver nanoparticles (Ag NPs) have aroused great attention due to their remarkable physical and chemical properties and excellent broad-spectrum antibacterial performance.In this work, a surface dielectric barrier discharge (DBD) plasma method is developed and employed to prepare cotton fabric supported Ag NPs (Ag/cotton) for the first time. UV-Vis and X-ray photoelectron spectroscopy (XPS) results confirm the formation of Ag NPs. TEM images show that the size of Ag NPs is in the range 4.8–5.3 nm. Heat-sensitive cotton fabrics are not destroyed by surface DBD plasma according to FTIR and XRDresults. Wash fastness of the Ag/cotton samples is investigated using ultrasonic treatment for 30 min and it is shown that the Ag NPs possess good adhesion to the cotton fabric according to UV-Vis spectra. Antibacterial activity of the Ag/cotton samples shows that obvious bacteriostasis loops are observed around the samples with the appearance of both Gram-negative bacterium Escherichia coli (E. coli) and Gram-positive bacterium Bacillus subtilis (B. subtilis). The average diameter of the bacteriostasis loops against both E. coli and B. subtilis becomes larger with an increasing silver loading amount.This work provides a universal, fast, simple, and environmentally-friendly cold plasma method for synthesizing Ag NPs on heat-sensitive materials at atmospheric pressure.

Synthesis of silver (nano)particle under hyperbranched poly(amido amine)s

2006 ◽  
Vol 103 (6) ◽  
pp. 3701-3705 ◽  
Author(s):  
Youyi Sun ◽  
Ding Wang ◽  
Jiangang Gao ◽  
Zhi Zheng ◽  
Qijin Zhang
Keyword(s):  
Nano Particle ◽  
Hyperbranched Poly ◽  
Silver Nano Particle

Silver nano particle formation on Ar plasma – treated cinnamyl alcohol

2012 ◽  
Vol 111 (3) ◽  
pp. 034902 ◽  
Author(s):  
S. Dahle ◽  
M. Marschewski ◽  
L. Wegewitz ◽  
W. Viöl ◽  
W. Maus-Friedrichs
Keyword(s):  
Particle Formation ◽  
Nano Particle ◽  
Cinnamyl Alcohol ◽  
Ar Plasma ◽  
Silver Nano Particle
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