نتایج جستجو برای: extract nanoparticles

تعداد نتایج: 280956  

2013
Sangeetha Nagarajan Kumaraguru Arumugam Kuppusamy

BACKGROUND The biosynthesis of metal nanoparticles by marine resources is thought to be clean, nontoxic, and environmentally acceptable "green procedures". Marine ecosystems are very important for the overall health of both marine and terrestrial environments. The use of natural sources like Marine biological resources essential for nanotechnology. Seaweeds constitute one of the commercially im...

Background: Due to the importance of investigating nosocomial infections and drug resistance in bacteria causing these infections, the use of herbs can be very helpful in treatment. In the present study, the effect of silver nanoparticles obtained from portulaca oleracea extract on bacteria causing nosocomial infections and effective parameters in the synthesis of these nanoparticles were inves...

Maryam Mousivand Masumeh Noruzi

The applications of zerovalent iron nanoparticles in environmental remediation have led to the development of green methods in their synthesis. This study for the first time reports on the green synthesis of zerovalent iron nanoparticles using Thuja orientalis extract as the reducing and capping agent at room temperature. The synthesized nanoparticles were characterized with different tec...

Journal: :avicenna journal of medical biotechnology 0

recently there has been fabulous excitement in the nano-biotechnological area for the study of nanoparticles synthesis using some natural biological system, which has led the growth advanced nanomaterials. this intention made us to assess the biologically synthesized silver nanoparticles from the leaf of suaeda monoica (s.monoica) using 1 mm silver nitrate. the leaf extract of s.monoica incubat...

A. Akhavan Sepahi, A. R. Shahverdi, M. Banoee,Z. Ehsanfar, N. Mokhtari,M. R. Khoshayand, P. Jafari Fesharaki,H. R. Monsef-Esfahani,,

Abstracts: nanoparticles. All the extracts were used separately for the synthesis of gold nanoparticles through the reduction ofaqueous AuClgold ions to gold nanoparticles. The ethanol extract of black tea and its tannin free ethanol extract produced goldnanoparticles in the size ranges of 2.5-27.5 nm and 1.25-17.5 nm with an average size of 10 nm and 3 nm, respectively.The prepared colloid gol...

There is a huge demand of silver nanoparticles in the global market due to their special properties and applications in different fields such as nanomedicine , dentists , nanocatalysis, nanoelectronics, textile field, waste water treatment.The major cons of top down and Bottom up methods are the synthesis processes are highly costly, time consuming and many harmful chemicals are used. To reduce...

2016
N. Vasanth G. Melchias P. Kumaravel

The current study emphasizes the process of synthesis of nanoparticles from the natural residue that is rapid and eco-friendly. So we present a simple and eco-friendly biosynthesis of silver nanoparticles using Ficus benghalensis fruit extract as reducing agent, rapid reduction of silver ions is observed leading to the formation of silver nanoparticles in solution. The synthesized nanoparticles...

2014
Priti Ranjan Merina Paul Das M. Sathish Kumar P. Anbarasi S. Sindhu E. Sagadevan P. Arumugam

Synthesis of silver nanoparticles using seeds of Nigella sativa as reducing agent was evaluated in this study. Homogenized extract of N. sativa exposed to sunlight gave a better synthesis of nanoparticles when compared to other methods. Antibacterial activity of nanoparticles was studied against urinary tract infection (UTI) causing bacteria by disc diffusion method. Further, the silver nanopar...

2015
Srikanth Kagithoju Vikram Godishala Rama Swamy Nanna

Inspired green synthesis of metallic nanoparticles is evolving as an important branch of nanotechnology. Traditionally these are manufactured by wet chemical methods which require toxic and flammable chemicals. We report for the first time an economic and eco-friendly green synthesis of silver nanoparticles using Strychnos potatorum aqueous leaf extract from 3 mM silver nitrate solution. Nanopa...

2014
Mahipal S. Shekhawat M. Manokari N. Kannan J. Revathi R. Latha

Present study reports the biogenesis of silver nanoparticles from the leaves of Cardiospermum halicacabum L. and their characterization. C. halicacabum has been used in traditional medicines but so far it has not been tested for synthesis of silver nanoparticles (AgNPs). The aqueous silver ions exposed to the herbal extract, which were reduced and the nanoparticles were synthesized. The presenc...

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