scholarly journals Biosynthesis of Silver Nanoparticles using Mimosa Pudica Plant root extract: Characterization, Antibacterial Activity and Electrochemical Detection of Dopamine

2016 ◽  
pp. 9959-9971 ◽  
Author(s):  
V Sreenivasulu ◽  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Electrochemical Detection ◽  
Plant Root ◽  
Root Extract ◽  
Mimosa Pudica

scholarly journals Biosythesis of Silver Nanoparticles using Putri Malu (Mimosa pudica) Leaves Extract and Microwave Irradiation Method

Molekul ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. 288
Author(s):  
Is Fatimah ◽  
Nur Afisa Lintang Mutiara
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Microwave Irradiation ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Scattering Method ◽  
Mimosa Pudica ◽  
Microwave Irradiation Method ◽  
Water As Solvent

In this paper, the biosynthesis of silver nanoparticles (AgNPs) using Mimosa pudica extract is discussed. Mimosa pudica leaves extract using water as solvent was used as bio-reductor to an aqueous solution of silver nitrate (AgNO3) and in order to accelerate the reduction, microwave irradiation method was applied. The AgNPs obtained were characterized using UV-Vis spectrophotometry, FTIR spectrophotometry, XRD, SEM-EDX, and particle size analysis based on dynamic scattering method. Effect of preparation method to the formation of AgNPs is also evaluated in antibacterial activity towards E.coli and P. aeruginosa. Rapid and ecofriendly biosynthesis of stable silver nanoparticles was observed in this study. The characterization results and antibacterial assay indicated the uniform and smaller particle size of AgNPs obtained by using microwave method and positively enhance the antibacterial activity against tested bacteria. 

scholarly journals Synthesis, characterization and antibacterial activity of silver nanoparticles using Rhazya stricta

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6086 ◽  
Author(s):  
Adeeb Shehzad ◽  
Munibah Qureshi ◽  
Saima Jabeen ◽  
Rizwan Ahmad ◽  
Amira H. Alabdalall ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Metallic Nanoparticles ◽  
Fourier Transforms ◽  
Root Extract ◽  
Gram Positive ◽  
Rhazya Stricta ◽  
Vis Spectroscopy ◽  
Wide Range ◽  
Pharmaceutical Industries

Background Green synthesis of metallic nanoparticles has gained significant attention in the field of nanomedicine as an environment-friendly and cost-effective alternative in comparison with other physical and chemical methods. Several metals such as silver, gold, iron, titanium, zinc, magnesium and copper have been subjected to nanoformulation for a wide range of useful applications. Silver nanoparticles (AgNPs) are playing a major role in the field of nanomedicine and nanotechnology. They are widely used in diagnostics, therapeutic and pharmaceutical industries. Studies have shown potential inhibitory antimicrobial, anti-inflammatory and antiangiogenesis activities of AgNPs. Methods AgNPs have been synthesized using silver nitrate and methanolic root extract of Rhazya stricta that belongs to the Apocynaceae family. Stability and dispersion of nanoparticles were improved by adding xylitol. Synthesized nanoparticles were characterized by UV–Vis spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometer and Fourier transforms infrared spectroscopy. Furthermore, the antibacterial effect of the plant extract and the nanoparticles were evaluated against gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacteria. Results The average size of AgNPs synthesized, was 20 nm with the spherical shape. Rhazya stricta based nanoparticles exhibited improved antibacterial activity against both gram-positive and negative strains.

scholarly journals Biological synthesis of AgNPs BIOLOGICAL SYNTHESIS OF SILVER NANOPARTICLES USING THE TUBEROUS ROOT EXTRACT OF IPOMOEA BATATAS AND THEIR CHARACTERIZATIONS AND ANTIBACTERIAL ACTIVITY

2019 ◽  
pp. 300-303 ◽  
Author(s):  
NAVEEN CHANDRA JOSHI ◽  
JUHI CHHABRA
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Ipomoea Batatas ◽  
Tuberous Root ◽  
Biological Synthesis ◽  
Root Extract ◽  
X Ray ◽  
Zones Of Inhibition ◽  
Ft Ir ◽  
Uv Visible

Objectives: Tuberous root extract based synthesis of silver nanoparticles (AgNPs), characterizations using Fourier-transform infrared spectroscopy (FT-IR), UV-visible, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX) techniques, and antibacterial activity of AgNPs against Staphylococcus aureus, Staphylococcus mutans, Proteus vulgaris, and Escherichia coli. Methods: Root extract of Ipomoea batatas (sweet potato) was prepared by boiling of small cut pieces of root with double distilled water. Added root extract with silver nitrate solution and centrifuged and collect the pellets. After several washing and drying, AgNPs have been preserved for characterizations and antibacterial activity. Results: The synthesized AgNPs were well characterized by FT-IR, UV-visible, XRD, FESEM, and EDX methods, and significant zones of inhibition observed around the loaded AgNPs on the agar plates. The zones of inhibition have been achieved 36, 40, 46, and 32 mm for E. coli, P. vulgaris, S. mutans, and S. aureus. Conclusion: The characterisation methods such as UV-Visible, FTIR, Powder XRD, FESEM and EDX indicate an efficient formation of AgNPs using root extract of I. batatas. The biologically synthesized AgNPs are found good antibacterial agents.

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