Green synthesis of MgO nanoparticles and its antibacterial properties

Abstract

Magnesium oxide nanostructured particles (NP) were prepared using a simple solution combustion technique using different leaf extracts such as Mangifera indica (Mango - Ma), Azadirachta indica (Neem—Ne), and Carica papaya (Papaya—Pa) as surfactants. The highly crystalline phase of MgO nanostructures was confirmed by PXRD and FTIR studies for 2 h 500°C calcined samples. To analyze the characteristics of obtained material–MaNP, NeNP, and PaNP for dosimetry applications, thermoluminescence (TL) studies were carried out for Co-60 gamma rays irradiated samples in the dose range 10–50 KGy; PaNP and NeNP exhibited well-defined glow curve when compared with MaNP samples. In addition, it was observed that the TL intensity decreases, with increase in gamma dose and the glow peak temperature is shifted towards the higher temperature with the increase in heating rate. The glow peak was segregated using glow curve deconvolution and thermal cleaning method. Kinetic parameters estimated using Chen’s method, trap depth (E), and frequency factor (s) were found to be 0.699, 7.408, 0.4929, and 38.71, 11.008, and 10.71 for PaNP, NeNP, and MaNP respectively. The well-resolved glow curve, good linear behavior in the dose range of 10–50, KGy, and less fading were observed in PaNP as compared with MaNP and NeNP. Further, the antibacterial activity was checked against human pathogens such as Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa. A visible zone of clearance was observed at 200 and 100 μg/mL by the PaNP and NeNP, indicating the death of colonies by the nanoparticles. Therefore, PaNP nanomaterial is a potential phosphor material for dosimetry and antibacterial application compared to NeNP and MaNP.

Ozonated Sunflower Oil (OSO) Alleviates Inflammatory Responses in Oxazolone-Induced Atopic Dermatitis (AD)-Like Mice and LPS-Treated RAW 264.7 Cells

“…Oxidative stress is defined as the formation of oxidants that exceed the antioxidant defense capacity in cells [ 40 ]. Antioxidants are chemicals that neutralize and prevent oxidative damage to vital cellular components, such as DNA, proteins, and the cell membrane [ 41 , 42 ]. Free radicals are primarily associated with oxidative stress.…”

Plant‐Derived Nanomaterials for Targeted Biological Applications and Smart Agriculture

“…Other metal and metal oxide nanomaterials Many more plant-derived metal and metal oxide nanoparticles have been used for biological, environmental, and industrial applications. For instance, Nickel oxide nanoparticles, [88] Platinum nanoparticles, [89] Palladium nanoparticles, [90] Aluminium oxide nanoparticles, [91] Silica nanoparticles, [92] Magnesium oxide nanoparticles, [93] and Cobalt nanoparticles. [94] Detailed discussion of these plant-derived nanoparticles is beyond the scope of this review article.…”

Rational synthesis and characterization of temperature switching ZnFe2O4/ZnO nanocomposites used for anti-bacterial, anti-oxidant and seed germination properties

“…Numerous metal oxide nanostructures have been thoroughly investigated as potential antibacterial systems, including silver oxide, nickel( ii ) oxide, magnesium oxide (MgO), copper oxide, iron( ii , iii ) oxide (Fe 2 O 3 , Fe 3 O 4 ), titanium( iv ) oxide, zinc oxide (ZnO), tin oxide, and manganese( ii , iii ) oxide nanomaterials (Mn 3 O 4 ). 7–11 ZnO nanostructures have been shown to have antibacterial activity towards a variety of dangerous species that are resistant to high temperatures and high pressures. 12 When compared to ZnO microstructures, ZnO nanostructures have better antibacterial activity due to their larger surface area.…”