نتایج جستجو برای: biogenic silver nanoparticles

تعداد نتایج: 148295  

2011
H. B. Patil S. V. Borse D. R. Patil U. K. Patil H. M. Patil

The silver nanoparticles are synthesized by using microbial reduction of silver ions in the presence of fungus Aspergillus flavus . The fungus , Aspergillus flavus when challenged with silver nitrate solution accumulated silver nanoparticles on the surface of its cell wall in 96 hr . The silver nanoparticles synthesized are characterized by using UV-spectroscopy. An absorption peak at 420 nm in...

2015
R. Andrew Davidson Donald S. Anderson Laura S. Van Winkle Kent E. Pinkerton T. Guo

Following a 6-h inhalation exposure to aerosolized 20 and 110 nm diameter silver nanoparticles, lung tissues from rats were investigated with X-ray absorption spectroscopy, which can identify the chemical state of silver species. Lung tissues were processed immediately after sacrifice of the animals at 0, 1, 3, and 7 days post exposure and the samples were stored in an inert and low-temperature...

2015
S. Supraja P. Arumugam

Silver nanoparticles were synthesized using Cynodon dactylon leaf extract and this study demonstrates the efficacy of biologically synthesized Silver nanoparticles (AgNPs) as anticancer and antibacterial agent. Anticancer activity of the biologically synthesized silver nanoparticles was studied using HEpG-2 cell line. The AgNPs showed dose-dependent cytotoxicity against HEpG-2 cells. Antimicrob...

2014
Youmie Park

This review covers general information regarding the green synthesis of antibacterial silver nanoparticles. Owing to their antibacterial properties, silver nanoparticles are widely used in many areas, especially biomedical applications. In green synthesis practices, the chemical reducing agents are eliminated, and biological entities are utilized to convert silver ions to silver nanoparticles. ...

2014
Praphulla Rao Jahnavi Rao Srinidhi Shetty

The physical and chemical methods employed in production of silver nanoparticles are expensive and the reagents used are harmful. This project deals with the production of silver nanoparticles using biological methods. Silver nitrate is reduced by biological extracts. Thus, the production is mainly dependent on the reducing ability of the plant used. Lemon extract has been used for the synthesi...

2014
Hamed Alizadeh Mojtaba Salouti Reza Shapouri

BACKGROUND Brucellosis is an infectious disease that is caused by Brucella spp. As Brucella spp. are intramacrophage pathogens, the treatment of this infection is very difficult. On the other hand, due to the side effects of the brucellosis treatment regime, it is necessary to find new antimicrobial agents against it. OBJECTIVES The aim of this study was to investigate the antimicrobial effec...

2012
R Geethalakshmi DVL Sarada

BACKGROUND There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalysis, electronics, chemistry, and energy. In this report, a simple and ecofriendly chemical reaction for the synthesis of gold and silver nanoparticles from Trianthema decandra (Aizoaceae) has been developed. METHODS AND RESULTS On treatment of aqu...

2016
SONIKA GUPTA O. P. JANGIR MUKESH SHARMA

Objective: In the present scenario, biogenic production of gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs) has evoked considerable interest in terms of their diverse biomedical applications because of their extremely small size and large surface to volume ratio. Hence, the aims of the current study were to use the plant extract for the biosynthesis of AgNPs and AuNPs and to evaluate...

2014
Feng Shao

This study investigated the antiviral effect of silver nanoparticles on MS2 bacteriophage. Silver nanoparticles were synthesized via chemical reduction method and characterized by transmission electron microscope. Synthesized silver nanoparticles and cultivated MS2 bacteriophage were characterized using zetasizer. The result in this study indicates that the toxicity of silver nanoparticles on M...

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