Green synthesis and characterization of bismuth oxide nanoparticle using mentha pulegium extract

The objectives of this study were the green synthesis of bismuth oxide nanoparticles using aqueous extract with a good potential for UV blocking and antibacterial activity. Based on the obtained results, Bi2O3 NPs can have a good candidate for different applications.
Source: Iranian Journal of Pharmaceutical Research - Category: Drugs & Pharmacology Source Type: research

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This study examines the chemical constituents, antioxidant potential, antibacterial mechanism, and antiproliferative activity of Cinnamomum zeylanicum bark essential oil. The compositions of the oil were analyzed by GC-MS, and the major constituents were found to be (E)-cinnamaldehyde (71.50%), linalool (7.00%), β-caryophyllene (6.40%), eucalyptol (5.40%), and eugenol (4.60%). C. zeylanicum essential oil contained remarkable levels of phenolic and bioactive compounds with outstanding ability to scavenge free radicals and inhibit β-carotene oxidation. The growth of pathogenic and spoilage bacteria, especially Gram...
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Abstract Antimicrobial resistance is a complex global health challenge today. Discovery and development of new natural alternates with novel targets is utmost priority. In this experiment, alternative antibiotic agents in the form of silver nanoparticles (SNPs) and Achillea millefolium L. extracts were evaluated for antibacterial and antioxidant activity. The SNPs were synthesized using aqueous, ethanol and methanol extracts of A. millefolium and were monitored by a color change and UV-vis spectroscopy. The size and shape of the nanoparticles were determined through scanning electron microscopy and phase was asses...
Source: Appl Human Sci - Category: Physiology Authors: Tags: Mater Sci Eng C Mater Biol Appl Source Type: research
Abstract Herein, we successfully synthesized nano-porous Co2O3/Cu2O3: Al2O3: SiO2 ((0, 5, 7, 9) Co-CAS) using the acidic sol-gel approach and calcined at 800 °C for 4 h. The crystallization behavior and spectroscopic properties were investigated using X-ray diffraction, field emission-scanning electron microscopy, and Fourier-transform infrared absorption spectra analysis. The antibiotic properties of the nano-porous CAS, 5Co-CAS, and 9Co-CAS magnetic nanocomposites was studied against some potentially pathogenic bacteria in water and wastewater samples. The bacteria tested included Escherichia coli,...
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Tags: Environ Sci Pollut Res Int Source Type: research
In this study, corn starch was functionalized with quercetin. Starch was first oxidized by sodium periodate to produce starch aldehyde, and then starch aldehyde was conjugated with quercetin through acid catalyzed condensation reaction. The structure, antioxidant and antimicrobial activities of starch aldehyde-quercetin conjugate were evaluated. Thin layer chromatography confirmed the conjugate did not contain free quercetin. The UV-vis spectrum of the conjugate exhibited an absorption band at 320 nm. Fourier-transform infrared and proton nuclear magnetic resonance spectra of the conjugate confirmed the aldehyde groups o...
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Tags: Int J Biol Macromol Source Type: research
Publication date: Available online 19 February 2020Source: Materials Chemistry and PhysicsAuthor(s): Natasha Vieira Sievers, Liliane Damaris Pollo, Gertrudes Corção, Nilo Sérgio Medeiros CardozoAbstractThis work reports a new method to obtain polypropylene/titanium dioxide (PP/TiO2) films with antibacterial activity through the in situ synthesis of nanostructured TiO2 directly in the polymer solution. In order to compare the performance of the different types of particles, TiO2 particles were also prepared utilizing the sol-gel method and subsequently incorporated into the polymer to form PP/TiO2 films...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
ConclusionsThe EO from C. camphora showed anti-MRSA activity via damaging cell membranes and disturbing the amino metabolism.Graphical abstract
Source: Journal of Ethnopharmacology - Category: Drugs & Pharmacology Source Type: research
Publication date: 1 March 2020Source: Materials Chemistry and Physics, Volume 243Author(s): Samir Bouchareb, Rachida Doufnoune, Farid Riahi, Hafsa Cherif-Silini, Lassaad BelbahriAbstractGO-Ag nanohybrids have attracted tremendous attention thanks to their several potential properties. In this research work, a new approach was adopted, where Triphenylphosphine (PPh3) was used as a linkage to decorate the surface of Graphene oxide (GO) nanosheets by Silver nanoparticles (AgNPs) via a simple method. The Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible spectroscopy (UV–Vis), X-ray diffraction ana...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
CONCLUSIONS: In vitro antimicrobial activity showed that the suspension of ZNPs with 250 ppm concentration could effectively cause a proper reduction and inhibition in the growth of both Gram-positive and Gram-negative microorganisms. Therefore, the results revealed the efficacy of the antibacterial properties of synthesized ZNPs suspension in aqueous media. PMID: 31847595 [PubMed - as supplied by publisher]
Source: Current Eye Research - Category: Opthalmology Authors: Tags: Curr Eye Res Source Type: research
Publication date: Available online 13 December 2019Source: Chinese Chemical LettersAuthor(s): Li Jin, Xun Liu, Changhao Bian, Jie Sheng, Yishan Song, Yongheng ZhuAbstractTo develop a novel food preservation technology for efficiently enhance bactericidal activity in a long term, hollow mesoporous silica spheres (HMSS) with regular nanostructures were applied to encapsulate natural organic antimicrobial agents. The chemical structures, morphologies and thermal stabilities of linalool, HMSS and linalool-functionalized hollow mesoporous silica spheres (L-HMSS) nanoparticles were evaluated by polarimeter, field emission scanni...
Source: Chinese Chemical Letters - Category: Chemistry Source Type: research
In this study, the obtained IC50 concentration of 51.25 μg/mL exhibits significant anticancer activity against A549 cells than other tested concentrations because of the release of zinc ions, which induce the cell apoptosis. Furthermore, studies on cell cycle validate that ZnO NPs arrest the cell cycle at the sub-G1 phase of A549 cells. These results suggest the utility of phytogenic ZnO NPs for various biomedical applications.Graphical abstract
Source: Biocatalysis and Agricultural Biotechnology - Category: Biotechnology Source Type: research
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