Green Synthesis and Antimicrobial Activity of Monodispersed Silver Nanoparticles Synthesized Using Lemon Extract

Author(s):  
P. Mosae Selvakumar ◽  
Churchil Angel Antonyraj ◽  
Revington Babu ◽  
Arun Dakhsinamurthy ◽  
N. Manikandan ◽  
...  
RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2673-2702 ◽  
Author(s):  
Anupam Roy ◽  
Onur Bulut ◽  
Sudip Some ◽  
Amit Kumar Mandal ◽  
M. Deniz Yilmaz

In this review, we discuss the recent advances in green synthesis of silver nanoparticles, their application as antimicrobial agents and mechanism of antimicrobial mode of action.


LWT ◽  
2019 ◽  
Vol 103 ◽  
pp. 293-300 ◽  
Author(s):  
Karen M. Soto ◽  
Camila T. Quezada-Cervantes ◽  
Montserrat Hernández-Iturriaga ◽  
Gabriel Luna-Bárcenas ◽  
Rafael Vazquez-Duhalt ◽  
...  

2014 ◽  
Vol 13 (02) ◽  
pp. 1450010
Author(s):  
Anandini Rout ◽  
Padan K. Jena ◽  
Debasish Sahoo ◽  
Umesh K. Parida ◽  
Birendra K. Bindhani

Silver nanoparticles ( AgNPs ) were prepared from the plant extract of N. arbor-tristis under atmospheric conditions through green synthesis and characterized by various physicochemical techniques like UV-Visible spectroscopy, IR Spectra, energy dispersive X-ray spectrometry (EDS), X-ray diffraction and transmission electron microscopy (TEM) and the results confirmed the synthesis of homogeneous and stable AgNPs by the plant extracts. The antimicrobial activity of AgNPs was investigated against most common bacteria found in burn wound Staphylococcus epidermidis and Pseudomonas aeruginosa. In these tests, Mueller Hinton agar plates were used with AgNPs of various concentrations, supplemented in liquid systems. P. aeruginosa was inhibited at the low concentration of AgNPs , whereas the growth-inhibitory effect on S. epidermidis was mild. These results suggest that AgNPs can be used as effective growth inhibitors of various microorganisms, making them applicable to diverse medical devices and antimicrobial control systems.


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Li Yumei ◽  
Li Yamei ◽  
Li Qiang ◽  
Bao Jie

Silver nanoparticles (AgNPs) were rapidly synthesized using an exopolysaccharide from Arthrobacter sp. B4 (B4-EPS). The optimum condition for AgNPs synthesis was under the concentration of 5 g/L B4-EPS and 1 mM AgNO3 at 80°C between pH 7.0 and 8.0. The resulting AgNPs displayed a face-centred-cubic structure with the size range from 9 nm to 72 nm. Further analysis showed that flocculation and reduction of B4-EPS played a pivotal role in the formation of AgNPs. Furthermore, these nanoparticles exhibited great stability, excellent antimicrobial activity, and low phytotoxicity. The aforementioned data provide a feasible and efficient approach for green synthesis of AgNPs using microbial polysaccharides with flocculation and reduction activity, which will be promising in medical filed.


Author(s):  
Tejaswini R ◽  
Dr Anisa Athar

An extract obtained from roasted Coffea arabica bean was used as bio-reductant and mixed with standard AgNO3 (0.1M) solution. The formation of silver nanoparticles(AgNP) was observed by the change in the colour of the solution (coffee extract + AgNO3) from brown to blackish brown. UV-vis spectrophotometry analysis showed maximum adsorption at 240nm. The SEM analysis showed the morphology of the AgNPs as oval and spherical and the sized of the particles between the range of 25nm to 51nm. The crystalline size of the AgNPs was analyzed between the range of 10nm to 30nm employing XRD technique. The antimicrobial activity study of the synthesized silver nanoparticles showed zone of inhibition against the clinically important bacteria namely- E coli, Pseudomonas, Klebsiella, Staphylococcus and Bacillus.


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