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...

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.

scholarly journals Bioactive Nanocomposites Composed of Magnesium Oxide Nanoparticles and 58S Bioactive Glass: Synthesis, Characterization, Bioactivity Evaluation and Antibacterial Activity

2020 ◽  
Author(s):  
Seyed Peiman Ghorbanzade Zaferani ◽  
Nima Nabian ◽  
Sayed Mahmood Rabiee
Keyword(s):  
Antibacterial Activity ◽  
Bioactive Glass ◽  
Magnesium Oxide ◽  
Oxide Nanoparticles ◽  
Magnesium Oxide Nanoparticles

Abstract The authors have withdrawn this preprint due to author disagreement.

Green synthesis of magnesium oxide nanoparticles using Dalbergia sissoo extract for photocatalytic activity and antibacterial efficacy

2020 ◽  
Vol 10 (7) ◽  
pp. 2351-2364 ◽  
Author(s):  
Muhammad Isa Khan ◽  
Muhammad Naseem Akhtar ◽  
Naveed Ashraf ◽  
Jawayria Najeeb ◽  
Hira Munir ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Green Synthesis ◽  
Magnesium Oxide ◽  
Oxide Nanoparticles ◽  
Antibacterial Efficacy ◽  
Dalbergia Sissoo ◽  
Magnesium Oxide Nanoparticles

scholarly journals Optimized Synthesis of Magnesium Oxide Nanoparticles as Bactericidal Agents

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Mohammad Moslem Imani ◽  
Mohsen Safaei
Keyword(s):  
Antibacterial Activity ◽  
Taguchi Method ◽  
Magnesium Oxide ◽  
Magnesium Nitrate ◽  
Disk Diffusion ◽  
Oxide Nanoparticles ◽  
Synthesis Of Nanoparticles ◽  
Colony Forming Unit ◽  
Magnesium Oxide Nanoparticles ◽  
Stirring Time

Increased antibiotic resistance of microorganisms as well as the need to reduce health-care costs necessitates the production of new antimicrobials at lower costs. For this reason, this study was aimed to optimize the synthesis of magnesium oxide nanoparticles with the greatest antibacterial activity. In this study, 9 experiments containing different proportions of the factors (magnesium nitrate, NaOH, and stirring time) effective in the synthesis of magnesium oxide nanoparticles were designed using the Taguchi method. Magnesium oxide nanoparticles were synthesized using the coprecipitation method, and their antibacterial activity was evaluated using colony-forming unit (CFU) and disk diffusion. Morphology, crystalline structure, and size of synthesized nanoparticles were investigated using Fourier transform infrared (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM). The optimum conditions (0.2 M magnesium nitrate, 2 M NaOH, and 90 min stirring time) for the synthesis of magnesium oxide nanoparticles with the greatest antibacterial activity were determined using the Taguchi method. The results of colony-forming unit and disk diffusion revealed the optimal antibacterial activity of synthesized nanoparticles against Staphylococcus aureus and Escherichia coli bacteria. The results obtained from FTIR and XRD analyses confirmed the synthesis of nanoparticles with favorable conditions. Also, according to the SEM image, the average size of synthesized nanoparticles was determined to be about 21 nm. According to the results, magnesium oxide nanoparticles can significantly reduce the number of Gram-positive and Gram-negative bacteria and can be used as an appropriate alternative to commonly used antibacterial compounds in order to tackle drug resistance among pathogens.

scholarly journals Bioactive Nanocomposites Composed of Magnesium Oxide Nanoparticles and 58S Bioactive Glass: Synthesis, Characterization, Bioactivity Evaluation and Antibacterial Activity

2020 ◽  
Author(s):  
Seyed Peiman Ghorbanzade Zaferani ◽  
Nima Nabian ◽  
Sayed Mahmood Rabiee
Keyword(s):  
Antibacterial Activity ◽  
Bioactive Glass ◽  
Magnesium Oxide ◽  
Soft Tissues ◽  
Weight Percent ◽  
Oxide Nanoparticles ◽  
Magnesium Oxide Nanoparticles ◽  
Bone Defect Healing ◽  
Before And After ◽  
Sbf Solution

Abstract One of the main strategies to facilitate bone defect healing is the application of a variety of biological materials such as ceramic-based implants and scaffolds. Bioactive glasses are recognized as the favorable biomaterials in bone tissue engineering since they can quickly form a bond with both hard and soft tissues. In this study, novel bioactive nanocomposites based on 58S bioactive glass in composite with various weight percent of magnesium oxide nanoparticles were prepared. DLS measurements represented that 98.1% of 58S glass particles possessed the particle size between 70 and 200 nm. The bioactivity of nanocomposite powders was evaluated through immersion of samples in the simulated body fluid (SBF) at different time intervals of 14 and 28 days. Moreover, the nanocomposite samples were characterized in terms of morphology, phase structure and functional groups using Scanning electron microscopy (SEM), X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) before and after soaking in the SBF solution. It was found that hydroxyapatite was formed on the surface of all nanocomposites after soaking in the SBF solution, although they bioactivity decreased with an increase in the amount of MgO nanoparticles from 15 wt. % to 25 wt. %. Moreover, antibacterial activity of the produced nanocomposites against MRSA bacteria was investigated and the results showed that 58S-15Mg exhibited the highest bactericidal activity.

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.

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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