Structural, Optical and Antibacterial Properties of Green Synthesized Silver Nanoparticles (AgNPs) Using Justicia adhatoda L. Leaf Extract

2019 ◽  
Vol 31 (2) ◽  
pp. 487-497 ◽  
Author(s):  
N. Thirumagal ◽  
A. Pricilla Jeyakumari
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Justicia Adhatoda ◽  
Green Synthesized Silver Nanoparticles

scholarly journals Green synthesized silver nanoparticles loaded PVA/Starch cryogel scaffolds with antibacterial properties

2019 ◽  
Vol 13 (1) ◽  
pp. 1-6
Author(s):  
Didem Demir ◽  
Seda Ceylan ◽  
Gülşah Gül ◽  
Zeynep İyigündoğdu ◽  
Nimet Bölgen
Keyword(s):  
Tissue Engineering ◽  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Composite Scaffold ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Infection Site ◽  
Engineering Applications ◽  
Aloe Barbadensis ◽  
Green Synthesized Silver Nanoparticles

In this study, Polyvinyl alcohol/Starch (PVA/Starch) cryogel scaffolds were combined with antibacterial silver nanoparticles (AgNPs), and the antimicrobial properties of composite scaffolds were determined for potential in tissue engineering applications. The porous PVA/Starch scaffolds were prepared by cryogelation technique. The nanoparticles were prepared by green synthesis from Aloe barbadensis leaf extract and characterized. The antibacterial, antifungal and antiyeast properties of AgNPs and AgNPs loaded PVA/Starch cryogel scaffolds were investigated. The highest antimicrobial activity of composite scaffold was found against Pseudomonas aeruginosa. Based on our studies, the results indicate that biodegradable, biocompatible and antimicrobial AgNPs loaded PVA/Starch scaffolds have potential to be used at an infection site in tissue engineering applications.

Pharmacological and Larvicidal Potential of Green Synthesized Silver Nanoparticles Using Carmona retusa (Vahl) Masam Leaf Extract

2018 ◽  
Vol 29 (6) ◽  
pp. 1243-1253 ◽  
Author(s):  
Ramanathan Rajkumar ◽  
Muthugounder Subramanian Shivakumar ◽  
Sengottayan Senthil Nathan ◽  
Kuppusamy Selvam
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Green Synthesized Silver Nanoparticles

scholarly journals Microwave-Assisted Green Synthesis of Silver Nanoparticles Using Juglans regia Leaf Extract and Evaluation of Their Physico-Chemical and Antibacterial Properties

Antibiotics ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 68 ◽  
Author(s):  
Mahsa Eshghi ◽  
Hamideh Vaghari ◽  
Yahya Najian ◽  
Mohammad Najian ◽  
Hoda Jafarizadeh-Malmiri ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Juglans Regia ◽  
Antibacterial Properties ◽  
Infrared Analysis ◽  
Ag Nps ◽  
Stabilizing Agents ◽  
Agno3 Solution ◽  
Transmission Electron ◽  
Vis Spectroscopy

Silver nanoparticles (Ag NPs) were synthesized using Juglans regia (J. regia) leaf extract, as both reducing and stabilizing agents through microwave irradiation method. The effects of a 1% (w/v) amount of leaf extract (0.1–0.9 mL) and an amount of 1 mM AgNO3 solution (15–25 mL) on the broad emission peak (λmax) and concentration of the synthesized Ag NPs solution were investigated using response surface methodology (RSM). Fourier transform infrared analysis indicated the main functional groups existing in the J. regia leaf extract. Dynamic light scattering, UV-Vis spectroscopy and transmission electron microscopy were used to characterize the synthesized Ag NPs. Fabricated Ag NPs with the mean particle size and polydispersity index and maximum concentration and zeta potential of 168 nm, 0.419, 135.16 ppm and −15.6 mV, respectively, were obtained using 0.1 mL of J. regia leaf extract and 15 mL of AgNO3. The antibacterial activity of the fabricated Ag NPs was assessed against both Gram negative (Escherichia coli) and positive (Staphylococcus aureus) bacteria and was found to possess high bactericidal effects.

Enhancement of antibacterial properties of silver nanoparticles–ceftriaxone conjugate through Mukia maderaspatana leaf extract mediated synthesis

2015 ◽  
Vol 121 ◽  
pp. 135-141 ◽  
Author(s):  
Muthukumar Harshiny ◽  
Manickam Matheswaran ◽  
Gangasalam Arthanareeswaran ◽  
Shanmugam Kumaran ◽  
Shanmuganathan Rajasree
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Properties

Antibacterial properties of biosynthesized silver nano particles

2020 ◽  
Vol 4 (1) ◽  
pp. 1-5
Author(s):  
Krishna Reddy BV ◽  
Avinash Kumar G ◽  
Nageswara Rao G
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Large Scale ◽  
Leaf Extract ◽  
Antibacterial Agents ◽  
Uv Spectroscopy ◽  
Antibacterial Properties ◽  
Nano Particles ◽  
Lannea Coromandelica ◽  
Cost Efficacy

Nanoparticles have their demand in various fields of science and technology and their applications extend even in medical and pharmaceutical arena. They have been used as preservatives, diagnosing aids and potent antibacterial agents. But their production is a serious matter of concern when it comes to cost, efficacy and toxicity issues. Overcoming these limitations green synthesis has taken its advantage for their commercial and large scale synthesis. This research will focus on the preparation of nano particles of silver with the help of purified leaf extract from Lannea coromandelica and evaluation of the same using UV-Vis Spectrophotometry. The nanoparticles exhibited surface plasmon resonance at 420nm in UV spectroscopy. Futhermore, nanoparticles have been evaluated for their antibacterial activity on Putida vulgaris, Staphylococcus aureus, and Bacillus subtillis. The results proved the eco friendly synthesized silver nanoparticles have a good antibacterial and can be used effectively in therapies targeting infections and infectious wounds.

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