Tridax Procumbens Amines Have A Potential To Synthesize Silver Nanoparticles

2019 ◽  
Author(s):  
Erick Nyakundi Ondari ◽  
Samuel Gichaba Omwenga ◽  
Nalini Madanagopal
Keyword(s):  
Silver Nanoparticles ◽  
Nanoparticle Synthesis ◽  
Leaf Extracts ◽  
Synthesis Of Nanoparticles ◽  
Tridax Procumbens ◽  
Isolated Compound ◽  
First Time ◽  
Silver Nanoparticle Synthesis ◽  
Molecular Compounds

Abstract Our previous findings showed that amines from Tridax procumbens (Family: Asteraceae) were responsible for the synthesis of silver nanoparticles. T. procumbens is a weed plant with rich source of medicinal compounds. In the current work, we studied the initial characterization of bioactive compounds by LC-MS, an essential tool for the characterization and identification of low molecular compounds. Further the isolated compound was investigated for silver nanoparticle synthesis. The leaf extracts examined revealed many novel amine derivative compounds reported for the first time mainly belonging to the group of free amines: n-Pentylhydrazine hydrochloride, 2-Nitrobenzenesulfonyl chloride, 1,7-Dichlorooctamethyltetrasiloxane, 5-Chloro-1,2,4-trihydroxybenzene, 3-Chloro-2-hydroxy-5-(trifluoromethyl)pyridine and 2-(Diphenylphosphino) ethyltriethoxysilane and conjugated amines: 5-Methoxy-diisopropyltryptamine, 4-Chlorophenoxyacetic acid, Diphenhydramine, Erucamide, n(4-((2-(2,5-dimethoxybenzylidene)hydrazino)carbonyl)ph)-4-me-benzenesulfonamide and 1,3,5-Trithia-2,4,6-tristannacyclohexane, 2,2,4,4,6,6-hexamethyl. Characterization by UV-Vis spectra, XRD, EDX and TEM revealed well separated spherical shaped AgNPs size ranging 8-50 nm. These findings suggest that further work could be extended to isolate and elucidate the structures of the identified molecules using powerful instruments such as HPLC-MS, HPLC-NMR and high resolution-MS (HR-MS). Further biotechnological approaches towards synthesis of novel metals will be enhanced to promote green chemistry technology adoption for the synthesis of nanoparticles.

scholarly journals Optimization of Green Synthesis of Silver Nanoparticles from Leaf Extracts ofPimenta dioica(Allspice)

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Akshay Rajeev Geetha ◽  
Elizabeth George ◽  
Akshay Srinivasan ◽  
Jameel Shaik
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Leaf Extract ◽  
Synthesis Method ◽  
Leaf Extracts ◽  
Synthesis Of Nanoparticles ◽  
Hot Air ◽  
Vis Spectroscopy ◽  
Pimenta Dioica ◽  
First Time

Production of silver nanoparticles from the leaf extracts ofPimenta dioicais reported for the first time in this paper. Three different sets of leaves were utilized for the synthesis of nanoparticles—fresh, hot-air oven dried, and sun-dried. These nanoparticles were characterized using UV-Vis spectroscopy and AFM. The results were diverse in that different sizes were seen for different leaf conditions. Nanoparticles synthesized using sun-dried leaves (produced using a particular ratio (1 : 0.5) of the leaf extract sample and silver nitrate (1 mM), resp.) possessed the smallest sizes. We believe that further optimization of the current green-synthesis method would help in the production of monodispersed silver nanoparticles having great potential in treating several diseases.

Synthesis of Silver Nanoparticles Using the Leaf Extract of Vitex negundo and its Anti-Bacterial Effect

2013 ◽  
Vol 678 ◽  
pp. 301-305 ◽  
Author(s):  
Gunasekaran Bhavani ◽  
Paulsamy Muthuselvam ◽  
Subramanian Geetha
Keyword(s):  
Silver Nanoparticles ◽  
Synthesis Method ◽  
Nanoparticle Synthesis ◽  
Cost Effective ◽  
Klebsiella Pneumonia ◽  
The Novel ◽  
Vitex Negundo ◽  
X Ray Diffraction ◽  
Leaf Extracts

Silver nanoparticles are known to have antimicrobial activity. The green synthesis method of nanoparticle synthesis is one of the most cost effective and eco friendly method. The present study is based on the synthesis of silver nanoparticles by the self reduction of silver nitrate by the leaf extracts of Vitex negundo which is one of the novel methods used in developing nanoparticles. The characterization of the particle was done by UV-Vis spectrophotometer, Fourier Transform Infra Red Spectroscopy, X-ray Diffraction analysis and the size of the synthesized nanoparticle was analyzed in the Scanning Electron Microscopy. The size of the particle was found to be 56 nm. The obtained silver nanoparticles showed anti-microbial activity against E.coli and Klebsiella pneumonia.

Synthesis and Characterization of Silver Nanoparticles from Psidium Guajava Leaf Extract

2021 ◽  
Vol 14 (5) ◽  
pp. 5634-5638
Author(s):  
Sruthi Radhakrishnan
Keyword(s):  
Silver Nanoparticles ◽  
Silver Nanoparticle ◽  
Leaf Extract ◽  
Nanoparticle Synthesis ◽  
Ethanolic Extract ◽  
Psidium Guajava ◽  
Sem Analysis ◽  
Synthesis Of Nanoparticles ◽  
Elemental Silver ◽  
Ft Ir

Green route for the synthesis of nanoparticles has become more acceptable than the other chemical as well as biological route. In the present study, silver nanoparticle is synthesized using ethanolic extract of Psidium guajava leaves. Further the synthesized silver nanoparticles were characterized by UV-Visible Spec, FT-IR, X-Ray Diffraction FESEM and E-DAX. The results of FT-IR provided evidence of the involvement of phytochemicals present in the leaf extract in the reduction of silver nitrate to silver nanoparticles. XRD confirmed the crystalline structure as well as shape of the synthesized nanoparticle as face-centred cubic. E-DAX profiling helped in determining the presence of elemental silver. The size of the nanoparticle procured by SEM analysis was found to be approximately 30-50 nm in size. Thus, the findings of this study showed that the plant assisted method for silver nanoparticle synthesis is more effective and further application level studies can shed lights on their use in healing of various human ailments.   

scholarly journals A REVIEW: A GREEN APPROACH FOR THE SYNTHESIS OF SILVER NANOPARTICLES AND ITS ANTIBACTERIAL APPLICATIONS

2018 ◽  
Vol 11 (8) ◽  
pp. 74 ◽  
Author(s):  
Shyla Marjorie Haqq ◽  
Amit Chattree
Keyword(s):  
Silver Nanoparticles ◽  
Antimicrobial Properties ◽  
Nanoparticle Synthesis ◽  
Silver Ions ◽  
Multidrug Resistant ◽  
X Ray Diffraction ◽  
Green Approach ◽  
Transmission Electron ◽  
Uv Visible ◽  
Silver Nanoparticle Synthesis

  This review is based on the synthesis of silver nanoparticles (AgNPs) using a green approach which is biofabricated from various medicinal plants. AgNPs were prepared from the various parts of the plants such as the flowers, stems, leaves, and fruits. Various physiochemical characterizations were performed using the ultraviolet (UV)-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, transmission electron microscopy, and energy dispersive spectroscopy. AgNPs were also used to inhibit the growth of bacterial pathogens and were found to be effective against both the Gram-positive and Gram-negative bacteria. For the silver to have antimicrobial properties, it must be present in the ionized form. All the forms of silver-containing compounds with the observed antimicrobial properties are in one way or another source of silver ions. Although the antimicrobial properties of silver have been known, it is thought that the silver atoms bind to the thiol groups in enzymes and subsequently leads to the deactivation of enzymes. For the silver to have antimicrobial properties, it must be present in the ionized form. The study suggested that the action of the AgNPs on the microbial cells resulted into cell lysis and DNA damage. AgNPs have proved their candidature as a potential antibacterial against the multidrug-resistant microbes. The biological agents for synthesizing AgNPs cover compounds produced naturally in microbes and plants. Reaction parameters under which the AgNPs were being synthesized hold prominent impact on their size, shape, and application. Silver nanoparticle synthesis and their application are summarized and critically discussed in this review.

Development, Characterization and Anticancer Evaluation of Silver Nanoparticles from Dalbergia sissoo Leaf Extracts

2020 ◽  
Vol 16 (2) ◽  
pp. 145-151
Author(s):  
Aakash Deep ◽  
Mitali Verma ◽  
Rakesh K. Marwaha ◽  
Arun K. Sharma ◽  
Beena Kumari
Keyword(s):  
Silver Nanoparticles ◽  
Anticancer Activity ◽  
Metal Ion ◽  
Color Change ◽  
Fixed Ratio ◽  
Cancer Cell Line ◽  
Dalbergia Sissoo ◽  
Leaf Extracts ◽  
Standard Drug

Aim: The objective behind this present work is the development and characterization of silver nanoparticles from Dalbergia sissoo leaf extracts and the analysis of anticancer activity. Methods: Silver nanoparticles were prepared by using the aqueous solution of Dalbergia sisoo leaf extract and silver nitrate. The formation of nanoparticles was determined by the color change during the preparation of plant extract to metal ion in a fixed ratio. The prepared nanoparticles were then characterized by TEM, FTIR, DLS, XRD, and SEM. Silver nanoparticles were also evaluated for anticancer activity. Results: Synthesized silver nanoparticles were having good anticancer activity against MCF 7 cancer cell line as compared to the standard drug Doxorubicin. Conclusion: The particle size of nanoparticles was found to lie in the range of 10 to 50 nm.

scholarly journals High-resolution insights into the early stages of silver nucleation and growth

2015 ◽  
Vol 179 ◽  
pp. 59-77 ◽  
Author(s):  
Cornelia M. Völkle ◽  
Denis Gebauer ◽  
Helmut Cölfen
Keyword(s):  
Experimental Data ◽  
Silver Nanoparticles ◽  
Early Growth ◽  
Nucleation And Growth ◽  
Silver Clusters ◽  
Computational Tools ◽  
Analytical Characterization ◽  
Titration Assay ◽  
First Time

Nucleation and growth of silver nanoparticles has already been investigated with various experimental and computational tools. However, owing to inherent problems associated with the analytical characterization of nucleation processes, there is a general lack of experimental data regarding the earliest precursors and smallest Ag(0) clusters. Here, we address this problem by the application of Synthetic Boundary Crystallization Ultracentrifugation, utilizing a multiwavelength detector for the first time, complemented by a specialized titration assay. These techniques shed new light on silver nanoparticle precursors existing in the pre-nucleation regime, and the initially nucleated ensemble of nanoclusters. For the first time, we present experimental data of UV-Vis spectra for fractionated silver clusters. These allow for unsurpassed insights into the sequence of nucleation and early growth species as well as their optical properties.

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