scholarly journals Green synthesis of silver nanoparticles through reduction with Euphorbia nivulia Buch.-Ham., stem bark extract: Characterization and antimicrobial activity

2021 ◽  
Vol 13 (2) ◽  
pp. 60-67
Author(s):  
Sarojini Devi N. ◽  
Padma Y. ◽  
R. Venkata Raju R.
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stem Bark ◽  
Bark Extract ◽  
Stem Bark Extract

scholarly journals Green synthesis of silver nanoparticles using leaf and stem bark extract of Pometia pinnata J.R. Forst & G. Forst

2020 ◽  
Vol 481 ◽  
pp. 012018
Author(s):  
A S Ningrum ◽  
A P Pridyantari ◽  
W Handayani ◽  
K Secario ◽  
D Djuhana ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stem Bark ◽  
Bark Extract ◽  
Stem Bark Extract

scholarly journals Green Synthesis of Silver Nanoparticles using Polyalthia longifolia Stem Bark Extract and its Catalytic Reduction of 4-Nitrophenol

2019 ◽  
Vol 31 (11) ◽  
pp. 2439-2442
Author(s):  
Karuppiah Muthu ◽  
B. Akilandaeaswari ◽  
S. Mangala Nagasundari
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Catalytic Reduction ◽  
Stem Bark ◽  
Bark Extract ◽  
Visible Spectroscopy ◽  
Transmission Electron ◽  
Stem Bark Extract ◽  
Uv Visible ◽  
Polyalthia Longifolia

In this present study, green synthesis of silver nanoparticles (AgNPs) was synthesized from silver nitrate using the reducing agents of Polyalthia longifolia bark extract and applied the catalyst in the reduction/degradation of environmental polluted organic compound in the presence of NaBH4. Initially, the colourless reaction mixture was slowly changed to yellowish brown, UV-visible spectroscopy of surface plasmon resonance centre at 447 nm confirmed the formation of AgNPs. High resolution transmission electron microscopy (HRTEM) clearly identified the spherical shapes nanoparticles with diameters sizes 5-25 nm. This AgNPs has excellent catalyst in the catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as compared to the reducing agent of NaBH4 (chemical) and plant extract (natural).

scholarly journals Green synthesis of silver nanoparticles using stem bark extract of Annona senegalensis: Characterization and its antibacterial potency

2021 ◽  
pp. 100219
Author(s):  
Ojeyemi M. Olabemiwo ◽  
Sunday A. Akintelu ◽  
Aisha A. Waheed ◽  
Dasola S. Okunlola ◽  
Darasimi R. Akinwale ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stem Bark ◽  
Bark Extract ◽  
Stem Bark Extract

Green Synthesis of Silver Nanoparticles Using Stem Bark Extract of Annona senegalensis: Characterization and Its Antibacterial Potency

2021 ◽  
Author(s):  
Ojeyemi M. Olabemiwo ◽  
Sunday Akintelu ◽  
Aisha A. Waheed ◽  
Dasola S. Okunlola ◽  
Darasimi R. Akinwale ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stem Bark ◽  
Bark Extract ◽  
Stem Bark Extract

scholarly journals BIOGENIC SYNTHESIS OF SILVER NANOPARTICLES USING MANILKARA HEXANDRA (ROXB.) DUBARD STEM BARK EXTRACT AND IT’S PHYSICAL, CHEMICAL CHARACTERIZATION AND PHARMACEUTICAL EVALUATION

2019 ◽  
pp. 79-88
Author(s):  
A ANTONY LAWRENCE ◽  
J THOMAS JOSEPH PRAKASH
Keyword(s):  
Silver Nanoparticles ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Stem Bark ◽  
Diffusion Method ◽  
Bark Extract ◽  
Stem Bark Extract ◽  
Uv Visible

Objective: The present study was to synthesize nanoparticles using Manilkara hexandra stem bark extract its characterization and evaluating it by an antimicrobial and antioxidant assay. Methods: Manilkara hexandra stem bark silver nanoparticles (MHSB-AgNPs) was done by mixing silver nitrate (1 mmol) and aqueous stem bark extract and it was analyzed by UV-Visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), Zeta potential, Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive Spectroscopy (EDAX), Thermogravimetry/Differential Thermal Analysis (TG/DTA) and Differential scanning calorimetry (DSC). The antibacterial assay was done by a well diffusion method and also examined for antifungal assay was done by disk diffusion method and antioxidant potential Diphenyl-1-picryl hydrazyl (DPPH method) Results: Manilkara hexandra stem bark silver nanoparticles (MHSB-AgNPs) is characterized by various techniques such as UV-visible absorption spectrum ranges from 430 nm to 440 nm indicate silver nanoparticles. The Fourier Transform Infrared Spectroscopy consists of biomolecules acts as capping agent to form silver nanoparticles. Field Emission Scanning Electron Microscopy shows particle size ranges from 15 nm to 50 nm. Energy Dispersive Spectroscopy shows the presence of Silver. X-ray Diffraction corresponds to face-centered lattice planes (111), (200), (220) and (311). Dynamic Light Scattering show the range of 68 nm and Zeta potential show the negative value of-17 nm which has high stability. Silver nanoparticles is also examined by Thermogravimetry/Differential Thermal Analysis (TG/DTA) and Differential scanning calorimetry (DSC) this project the thermal stability of the nanoparticles. The aqueous stem bark is also examined by UV-visible absorption spectrum, Fourier Transform Infrared Spectroscopy (FTIR), and Gas Chromatography-Mass Spectrometry (GCMS). In GCMS 20 compounds were identified. Silver nanoparticles show high zone of inhibition in antimicrobial assays and act as a good antioxidant agent. Conclusion: It is eco-friendly, non-toxic, and it’s easy to synthesis and it shows good result in an antimicrobial and antioxidant assay can be applied in a pharmaceutical application.

scholarly journals Biosynthesis of silver nanoparticles using Artocarpus elasticus stem bark extract

2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Nur Iffah Shafiqah Binti Abdullah ◽  
Mansor B. Ahmad ◽  
Kamyar Shameli
Keyword(s):  
Silver Nanoparticles ◽  
Stem Bark ◽  
Bark Extract ◽  
Stem Bark Extract ◽  
Artocarpus Elasticus
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