scholarly journals Boswellia sacra leaf extract mediated biosynthesis of ZnO nanoparticles: Characterization, photocatalytic and antibacterial activity

2021 ◽  
Vol 2 (4) ◽  
Keyword(s):  
Antibacterial Activity ◽  
Zno Nanoparticles ◽  
Leaf Extract ◽  
Nanoparticles Characterization ◽  
Boswellia Sacra

scholarly journals Synthesis of Zinc Oxide Nanoparticles Using Leaf Extract of Lippia adoensis (Koseret) and Evaluation of Its Antibacterial Activity

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Meron Girma Demissie ◽  
Fedlu Kedir Sabir ◽  
Gemechu Deressa Edossa ◽  
Bedasa Abdisa Gonfa
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Medicinal Plant ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Leaf Extract ◽  
Diffusion Method ◽  
Oxide Nanoparticles ◽  
Lippia Adoensis

The synthesis of metal oxide nanoparticles with the use of medicinal plant extract is a promising alternative to the conventional chemical method. This work aimed to synthesize zinc oxide nanoparticles using a green approach from indigenous “Koseret” Lippia adoensis leaf extract which is an endemic medicinal plant and cultivated in home gardens of different regions of Ethiopia. The biosynthesized zinc oxide nanoparticles were characterized using thermogravimetric analysis, X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy, transmission electron microscopy, ultraviolet-visible spectroscopy, and Fourier transform infrared spectroscopy. Furthermore, this study also evaluated the antibacterial activity of the synthesized ZnO nanoparticles against clinical and standard strains of Escherichia coli, Klebsiella pneumonia, Staphylococcus aureus, and Enterococcus faecalis by the disc diffusion method. According to the result of this study, ZnO nanoparticles synthesized using Lippia adoensis leaf extract showed promising result against both Gram-positive and Gram-negative bacterial strains with a maximum inhibition zone of 14 mm and 12 mm, respectively, using uncalcinated form of the synthesized ZnO nanoparticles.

Acalypha fruticosa L. leaf extract mediated synthesis of ZnO nanoparticles: Characterization and antimicrobial activities

2020 ◽  
Vol 23 ◽  
pp. 73-80 ◽  
Author(s):  
S. Vijayakumar ◽  
P. Arulmozhi ◽  
N. Kumar ◽  
B. Sakthivel ◽  
S. Prathip Kumar ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Leaf Extract ◽  
Antimicrobial Activities ◽  
Nanoparticles Characterization

Bio-fabricated ZnO nanoparticles: direct sunlight-driven selective photodegradation, antibacterial activity, and thermoluminescence-emission characteristics

2020 ◽  
Vol 44 (20) ◽  
pp. 8273-8279 ◽  
Author(s):  
Anupama R. Prasad ◽  
Anagha M. ◽  
Shamsheera K. O. ◽  
Abraham Joseph
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zno Nanoparticles ◽  
Leaf Extract ◽  
Gliricidia Sepium ◽  
Emission Characteristics ◽  
Synthetic Route ◽  
Direct Sunlight ◽  
Morphology Analysis ◽  
Elongated Nanoparticles

Zinc oxide (ZnO) nanoparticles were prepared via a Gliricidia sepium leaf extract-assisted green synthetic route. Near-spherical and elongated nanoparticles were obtained according to morphology analysis.

Laurus nobilis leaf extract mediated green synthesis of ZnO nanoparticles: Characterization and biomedical applications

2016 ◽  
Vol 84 ◽  
pp. 1213-1222 ◽  
Author(s):  
Sekar Vijayakumar ◽  
Baskaralingam Vaseeharan ◽  
Balasubramanian Malaikozhundan ◽  
Malaikkarasu Shobiya
Keyword(s):  
Green Synthesis ◽  
Zno Nanoparticles ◽  
Biomedical Applications ◽  
Leaf Extract ◽  
Laurus Nobilis ◽  
Nanoparticles Characterization

Antibacterial Activities of Biosynthesized ZnO Nanoparticles Using Leaf and Fruit Extracts of Neolamarckia cadamba

2021 ◽  
Vol 21 (12) ◽  
pp. 6168-6182
Author(s):  
Saee Gharpure ◽  
Rachana Yadwade ◽  
Shuana Mehmood ◽  
Balaprasad Ankamwar
Keyword(s):  
Antibacterial Activity ◽  
Zno Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Fruit Extract ◽  
E Coli ◽  
Fruit Extracts ◽  
Before And After ◽  
Micro Organisms ◽  
Antibacterial Potential

Zinc oxide nanoparticles have been biosynthesized with the help of Neolamarckia cadamba leaf and fruit extracts. ZnO nanoparticles were tested for antibacterial activity before and after calcination against Gram positive (Staphylococcus aureus, Bacillus subtilis) as well as Gram negative micro-organisms (Escherichia coli, Pseudomonas aeruginosa) within the concentration range 0.625–10 mg/mL with the help of well diffusion technique. Higher antibacterial potential has been observed in ZnO nanoparticles synthesized using leaf extract in comparison with those synthesized using fruit extract. Increased antibacterial activity was observed before calcination as compared to after calcination. ZnO synthesized using leaf extract were observed to show significant antibacterial potential against E. coli, S. aureus along with P. aeruginosa before calcination as well as against E. coli after calcination. Similarly, ZnO nanoparticles synthesized using fruit extract exhibited antibacterial activity against E. coli and P. aeruginosa before calcination and against E. coli after calcination. Both the ZnO nanoparticles before and after calcination did not show any antibacterial activity against B. subtilis. Thus, ZnO nanoparticles can serve a dual purpose by its application as an antibacterial agent against susceptible micro-organisms as well as biocompatible carrier system for drug delivery applications in case of non-antibacterial properties by virtue of its inertness as well as easy disposal.

scholarly journals Identification and assessment of the antibacterial activity of ZnO nanoparticles produced by Vigna mungo and Rhizobacteria.

2021 ◽  
Author(s):  
Bharat BK kwatra
Keyword(s):  
Antibacterial Activity ◽  
Zno Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Vigna Mungo ◽  
Alpha Tocopherol ◽  
Diffusion Experiment ◽  
Zno Nps ◽  
Rhizobium Sp

ZnO nanoparticles have received a lot of interest in recent years due to their unusual features. Antimicrobial properties of ZnO NPs However, the qualities of nanoparticles are determined by their size and form, making them suitable for a variety of applications. The current work looks at the synthesis, characterization, and antibacterial activity of ZnO NPs produced by Vigna Mungo and Rhizobacteria. Rhizobacteria isolated from V. mungo root nodule were morphologically, biochemically, and molecularly examined and identified as Rhizobium sp. strain P4 and Bacillus flexus strain IFO15715. The GC-MS analysis of methanol leaf extract of V. mungo was performed to detect and identify bioactive chemicals, and this indicated phytol as an antibacterial agent, while Squalene and Alpha tocopherol had antioxidant and anti-tumour properties. Agar well diffusion experiment was used to determine the antibacterial properties of ZnO nanoparticles and Vigna Mungo leaf extract. This approach is widely documented, and standard zones of inhibition for sensitive and resistant values have been defined. The results demonstrated that both methanol extract and zinc oxide nanoparticles have strong antibacterial efficacy against the majority of the pathogens examined. he synthesized nanoparticles from Rhizobium sp. were characterized by analytical techniques like SEM, XRD, FTIR, and UV Vis.

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