scholarly journals An Eco-Friendly Approach to the Control of Pathogenic Microbes and Anopheles stephensi Malarial Vector Using Magnesium Oxide Nanoparticles (Mg-NPs) Fabricated by Penicillium chrysogenum

2021 ◽  
Vol 22 (10) ◽  
pp. 5096
Author(s):  
Amr Fouda ◽  
Mohamed A. Awad ◽  
Ahmed M. Eid ◽  
Ebrahim Saied ◽  
Mohammed G. Barghoth ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Penicillium Chrysogenum ◽  
Anopheles Stephensi ◽  
Cost Effective ◽  
Oxide Nanoparticles ◽  
Magnesium Oxide Nanoparticles ◽  
Ft Ir ◽  
Pathogenic Microbes ◽  
Main Components ◽  
Malarial Vector

The discovery of eco-friendly, rapid, and cost-effective compounds to control diseases caused by microbes and insects are the main challenges. Herein, the magnesium oxide nanoparticles (MgO-NPs) are successfully fabricated by harnessing the metabolites secreted by Penicillium chrysogenum. The fabricated MgO-NPs were characterized using UV-Vis, XRD, TEM, DLS, EDX, FT-IR, and XPS analyses. Data showed the successful formation of crystallographic, spherical, well-dispersed MgO-NPs with sizes of 7–40 nm at a maximum wavelength of 250 nm. The EDX analysis confirms the presence of Mg and O ions as the main components with weight percentages of 13.62% and 7.76%, respectively. The activity of MgO-NPs as an antimicrobial agent was investigated against pathogens Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans, and exhibited zone of inhibitions of 12.0 ± 0.0, 12.7 ± 0.9, 23.3 ± 0.8, 17.7 ± 1.6, and 14.7 ± 0.6 mm respectively, at 200 µg mL−1. The activity is decreased by decreasing the MgO-NPs concentration. The biogenic MgO-NPs exhibit high efficacy against different larvae instar and pupa of Anopheles stephensi, with LC50 values of 12.5–15.5 ppm for I–IV larvae instar and 16.5 ppm for the pupa. Additionally, 5 mg/cm2 of MgO-NPs showed the highest protection percentages against adults of Anopheles stephensi, with values of 100% for 150 min and 67.6% ± 1.4% for 210 min.

scholarly journals Phytoassisted synthesis of magnesium oxide nanoparticles from Pterocarpus marsupium rox.b heartwood extract and its biomedical applications

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Manne Anupama Ammulu ◽  
K. Vinay Viswanath ◽  
Ajay Kumar Giduturi ◽  
Praveen Kumar Vemuri ◽  
Ushakiranmayi Mangamuri ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Cost Effective ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Pterocarpus Marsupium ◽  
X Ray ◽  
Magnesium Oxide Nanoparticles ◽  
Cost Effective Method ◽  
Ft Ir ◽  
Crystalline Nature

Abstract Background Unlike chemical techniques, the combination of metal oxide nanoparticles utilizing plant concentrate is a promising choice. The purpose of this work was to synthesize magnesium oxide nanoparticles (MgO-NPs) utilizing heartwood aqueous extract of Pterocarpus marsupium. The heartwood extract of Pterocarpus marsupium is rich in polyphenolic compounds and flavonoids that can be used as a green source for large-scale, simple, and eco-friendly production of MgO-NPs. The phytoassisted synthesis of MgO is characterized by UV-Visible spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) with EDS (energy dispersive X-ray spectroscopy), and transmission electron microscopy (TEM). Results The formation of MgO-NPs is confirmed by a visual color change from colorless to dark brown and they displayed a wavelength of 310 nm in UV-Spectrophotometry analysis. The crystalline nature of the obtained biosynthesized nanoparticles are revealed by X-ray diffraction analysis. SEM results revealed the synthesized magnesium oxide nanoparticles formed by this cost-effective method are spherically shaped with an average size of < 20 nm. The presence of magnesium and oxygen were confirmed by the EDS data. TEM analysis proved the spherical shape of the nanoparticles with average particle size of 13.28 nm and SAED analysis confirms the crystalline nature of MgO-NPs. FT-IR investigation confirms the existence of the active compounds required to stabilize the magnesium oxide nanoparticles with hydroxyl and carboxyl and phenolic groups that act as reducing, stabilizing, and capping agent. All the nanoparticles vary in particle sizes between 15 and 25 nm and obtained a polydispersity index value of 0.248. The zeta-potential was measured and found to be − 2.9 mV. Further, MgO-NPs were tested for antibacterial action against Staphylococcus aureus (Gram-positive bacteria) and Escherichia coli (Gram-negative bacteria) by minimum inhibitory concentration technique were found to be potent against both the bacteria. The blended nanoparticles showed good antioxidant activity examined by the DPPH radical scavenging method, showed good anti-diabetic activity determined by alpha-amylase inhibitory activity, and displayed strong anti-inflammatory activity evaluated by the albumin denaturation method. Conclusions The investigation reports the eco-friendly, cost-effective method for synthesizing magnesium oxide nanoparticles from Pterocarpus marsupium Rox.b heartwood extract with biomedical applications. Graphical abstract

scholarly journals Surfactant Free Synthesis of Magnesium Oxide Nanotubes by Simple Chemical Co-Precipitation Method

2020 ◽  
Vol 9 (4) ◽  
pp. 2504-2506
Keyword(s):  
Magnesium Oxide ◽  
Cost Effective ◽  
Precipitation Method ◽  
Diffraction Field ◽  
Oxide Nanoparticles ◽  
Outer Diameter ◽  
X Ray Diffraction ◽  
X Ray ◽  
Magnesium Oxide Nanoparticles ◽  
Co Precipitation

A simple cost effective preparation of Magnesium oxide nanoparticles in nanotube morphology is reported using Chemical co-precipitation method. As prepared magnesium oxide nanoparticles were characterized using UV-visible spectroscopy, X-ray Diffraction, Field Emission Scanning Electron Microscope and Energy dispersive X-ray spectroscopy. As prepared magnesium oxide nanoparticles were found in nanotube morphology whose inner and outer diameter were 31 nm and 78 nm. The band gap of as prepared nanotubes were found to be 5.37eV with maximum absorbance at 200 nm.

Antibacterial activity of magnesium oxide nanoparticles prepared by Calcination method

2019 ◽  
Vol 10 (03) ◽  
Author(s):  
Elaf Ayad Kadhem ◽  
Miaad Hamzah Zghair ◽  
Sarah , Hussam H. Tizkam, Shoeb Alahmad Salih Mahdi ◽  
Hussam H. Tizkam ◽  
Shoeb Alahmad
Keyword(s):  
Antibacterial Activity ◽  
Magnesium Oxide ◽  
Diffusion Method ◽  
Oxide Nanoparticles ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Magnesium Oxide Nanoparticles ◽  
Agar Disc

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.

Applications of ZnO and MgO Nanoparticles in Reducing Zinc Pollution Level in Rubber Manufacturing Processes: A Review

2020 ◽  
Vol 6 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Seyyed Mohammad Javadi
Keyword(s):  
Zinc Oxide ◽  
Fatty Acid ◽  
Magnesium Oxide ◽  
Environmental Effects ◽  
Pollution Level ◽  
Oxide Nanoparticles ◽  
Mgo Nanoparticles ◽  
Magnesium Oxide Nanoparticles ◽  
Council Directive ◽  
Zno Particles

Background: Rubber vulcanization is a consolidated chemical process to enhance the mechanical properties of the polymeric material by sulfur crosslinking of the polymer chains, such as rubber. Vulcanization Activators are important rubber processing additives that activate sulfur cure and improve the efficiency of sulfur-based cure systems. The most common activator is zinc fatty acid ester that is often formed in-situ by the reaction of fatty acid with zinc oxide. Although zinc is one of the less harmful heavy metals, according to European Council Directive 2004/73/EC, the reduction of zinc level in the environment has become an important task because of its toxic effect on aquatic organisms. : The current study reviews the research achievements in the field of reducing the consumption of micronutrients of ZnO particles based on the use of nanoparticles instead of them in the polymer industry. Among the proposed methods, due to the less environmental effects of magnesium oxide, the use of MgO nanoparticles instead of zinc oxide has also achieved good results. Objective: The aim of this paper is considering suggested different methods on the reduction of using ZnO particles in related industries, the use of ZnO nanoparticles has had better results than its particles. In addition, due to the less environmental effects of magnesium oxide, magnesium oxide nanoparticles can be used instead of micronutrients of zinc oxide. Overall, the results of various investigations show that reducing the diameter of the zinc oxide particles reduces the amount required for curing the rubber and thus reduces its toxic effects. Also, the use of magnesium oxide nanoparticles instead of zinc oxide in different concentrations is investigated.

An insight into the Mechanism of Antibacterial activity by Magnesium oxide nanoparticles

2021 ◽  
Author(s):  
Proma Bhattacharya ◽  
Aishee Dey ◽  
Sudarsan Neogi
Keyword(s):  
Antibacterial Activity ◽  
Magnesium Oxide ◽  
Oxide Nanoparticles ◽  
Antibacterial Efficacy ◽  
Magnesium Oxide Nanoparticles ◽  
Insight Into

The exact mechanism behind the antibacterial efficacy of nanoparticles remain unexplored till date. This study is aimed at shedding light on the mechanism adopted by magnesium oxide nanoparticles prepared in...

Biocidal chitosan-magnesium oxide nanoparticles via a green precipitation process

2021 ◽  
Vol 411 ◽  
pp. 124884
Author(s):  
Chandrasekaran Karthikeyan ◽  
Natarajan Sisubalan ◽  
Mani Sridevi ◽  
Kokkarachedu Varaprasad ◽  
Mohamed Hussain Ghouse Basha ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Precipitation Process ◽  
Oxide Nanoparticles ◽  
Magnesium Oxide Nanoparticles
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