Anti-microbial mechanism of ZnO nanoparticles in the presence of cationic surfactant against pathogenic bacteria for pharmaceutical applications

Metal oxide nanoparticles with quite prodigious enactment in the field of research. ZnO is considered to be an exact candidate for an antimicrobial agent. ZnO in the form of fine nanoparticles possess enhanced antibacterial action than when it is in the bulk form. It is obvious that ZnO, which have the average crystallite size in the range between 15nm to 20nm exhibits enhanced antimicrobial activity against pathogenic bacterias, so the present investigation is carried out to explains the role of cationic surfactant in the antimicrobial execution of ZnO nanoparticles enzymatic about precipitation method annealed at the temperature of 600oC. The outcomes are cogitated by XRD spectra, SEM, and Fourier Transform Infra-Red spectra. The crucial antimicrobic activity of the complex ZnO NP's antagonistic pathogenic bacterias were studied quantity-wise. ZnO nanoparticles have the capability to interfere with NorA protein, which is developed for conferring resistance in bacteria and has pumping activity that mediates the effluxing bacterias from a cell. Thus, antimicrobial effect Zinc oxide is widely used in nursing a variety of skin conditions, including dermatitis, itching due to eczema, diaper rash and acne.

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Nano zinc oxide – An alternate zinc supplement for livestock

Veterinary World ◽

10.14202/vetworld.2020.121-126 ◽

2020 ◽

Vol 13 (1) ◽

pp. 121-126

Author(s):

K. Geetha ◽

M. Chellapandian ◽

N. Arulnathan ◽

A. Ramanathan

Keyword(s):

Antibacterial Activity ◽

Zno Nanoparticles ◽

Pathogenic Bacteria ◽

Antimicrobial Activities ◽

Precipitation Method ◽

Dependent Manner ◽

Bacterial Strains ◽

Nano Zno ◽

Zinc Supplement

Aim: This study was aimed to investigate antimicrobial and cytotoxicity effect of nano ZnO in in vitro for the application of livestock feed supplement. Materials and Methods: Nano ZnO was synthesized by wet chemical precipitation method using zinc acetate as a precursor and sodium hydroxide was used for reducing the precursor salt. The properties of synthesized powder were characterized using ultraviolet (UV)–visible spectroscopy, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD), respectively. In vitro antimicrobial activities were analyzed against the pathogenic bacteria in poultry Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Streptococcus aeruginosa. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was conducted to analyze the cytotoxicity effect of nano ZnO. Results: SEM showed a spherical ZnO particle in the range of 70-100 nm. The size of the particle and purity of the sample were confirmed by XRD. The nano-sized ZnO particles exhibited the UV absorption peak at 335 nm. In FTIR spectroscopy, pure ZnO nanoparticles showed stretching vibrations at 4000-5000 cm-1. ZnO nanoparticles exhibited remarkable antibacterial activity against E. coli, S. aureus, K. pneumoniae, and S. aeruginosa bacterial strains. Cell viability was significantly reduced in a dose-dependent manner in the cytotoxicity study. Conclusion: From the broad-spectrum antibacterial activity and the lower cytotoxicity observed at the prescribed dose, it is concluded that nano ZnO powder is a potential alternate zinc supplement for livestock.

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Structural, optical and antibacterial properties of yttriumdoped ZnO nanoparticles

Cerâmica ◽

10.1590/0366-69132015613601932 ◽

2015 ◽

Vol 61 (360) ◽

pp. 457-461 ◽

Cited By ~ 4

Author(s):

V. D. Mote ◽

Y. Purushotham ◽

R. S. Shinde ◽

S. D. Salunke ◽

B. N. Dole

Keyword(s):

Zno Nanoparticles ◽

Antimicrobial Agents ◽

Antibacterial Properties ◽

Average Crystallite Size ◽

Cost Effective ◽

Hexagonal Wurtzite Structure ◽

Precipitation Method ◽

X Ray Diffraction ◽

Doped Zno ◽

Co Precipitation

Abstract Yttrium-doped ZnO nanoparticles were synthesized by co-precipitation method to investigate structural, optical and antibacterial properties. X-ray diffraction analysis confirms hexagonal (wurtzite) structure with average crystallite size between 16 and 30 nm. Optical energy band gap decreaseswith increasing Y-doping concentration. ZnO nanoparticles were found to be highly effective against S. aureus and Y-doped ZnO nanoparticles against E. coli, B. subtilis and S. typhi. Undoped and Y-doped ZnO nanoparticles are good inorganic antimicrobial agents and can be synthesized by cost effective co-precipitation method.

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Effects of Chromium Doping on the Electrical Properties of ZnO Nanoparticles

Emerging Science Journal ◽

10.28991/esj-2020-01212 ◽

2020 ◽

Vol 4 (2) ◽

pp. 82-88 ◽

Cited By ~ 1

Author(s):

S. Janet Priscilla ◽

V. Andria Judi ◽

R. Daniel ◽

K. Sivaji

Keyword(s):

Zinc Oxide ◽

Zno Nanoparticles ◽

Electrochemical Impedance ◽

Chemical Properties ◽

Average Crystallite Size ◽

Precipitation Method ◽

Electromagnetic Spectrum ◽

Nitrate Hexahydrate ◽

Pure Zinc ◽

Vis Spectroscopy

Nanostructured ZnO has gained a considerable amount of attention due to its unique physical and chemical properties and due to its remarkable performance in the fields of optics, photonics and electronics. The scope of this work is to study the Structural, Optical and Electronic properties of Pure Zinc Oxide (ZnO) and Chromium doped Zinc Oxide nanoparticles. These nanoparticles were synthesized by low-temperature precipitation method at various concentrations in the range (Zn1-xCrxO; (x = 0, 0.1& 0.3)). The precursors used were analytical grade Zinc Nitrate Hexahydrate and Chromium Nitrate Nona hydrate. The synthesized nanoparticles were annealed at 400°C. The Structural property of the synthesized nanoparticles was analysed by XRD (X-Ray diffraction) and was confirmed to exhibit a crystalline hexagonal wurtzite structure with an average crystallite size of 55nm. The functional groups were analysed using FTIR (Fourier Transformed Infra-red spectroscopy). The Morphology was analysed by FESEM (Field Emission Scanning Electron Microscope) and a change in morphology from spherical to spindle like structure was observed. The Optical properties were analysed using UV-Vis spectroscopy, the absorption spectrum for electromagnetic spectrum was observed and the changes in the optical band gap of ZnO nanoparticles with Chromium dopant addition were calculated to be in the range of 3.6 eV. The Electrical property of the synthesised nanoparticles was analysed using Electrochemical Impedance Spectroscopy (EIS) and the conductivity was calculated to be in the range of 1.1e-07S/m.

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Comparative Study of Pure Zno and Copper Doped Zno Nanoparticles Synthesised via Co-Precipitation Method

ScieXplore International Journal of Research in Science ◽

10.15613/sijrs/2014/v1i2/67542 ◽

2014 ◽

Vol 1 (2) ◽

pp. 73 ◽

Cited By ~ 1

Author(s):

V. Kalaiselvi ◽

N. Jayamani ◽

M. Revathi

Keyword(s):

Comparative Study ◽

Zno Nanoparticles ◽

Precipitation Method ◽

Doped Zno ◽

Co Precipitation

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THE ACTIVITY OF ESSENTIAL OILS OBTAINED FROM SPECIES AND INTERSPECIES HYBRIDS OF THE Mentha GENUS AGAINST SELECTED PLANT PATHOGENIC BACTERIA

Acta Scientiarum Polonorum Hortorum Cultus ◽

10.24326/asphc.2018.6.17 ◽

2018 ◽

Vol 17 (6) ◽

pp. 167-174 ◽

Cited By ~ 1

Author(s):

Małgorzata Schollenberger ◽

Tomasz M. Staniek ◽

Elżbieta Paduch-Cichal ◽

Beata Dasiewicz ◽

Agnieszka Gadomska-Gajadhur ◽

...

Keyword(s):

Essential Oils ◽

Pseudomonas Syringae ◽

Pathogenic Bacteria ◽

Antimicrobial Effect ◽

Mentha Piperita ◽

Mentha Spicata ◽

Plant Essential Oils ◽

Plant Pathogenic Bacteria ◽

Interspecies Hybrids

Plant essential oils of six aromatic herb species and interspecies hybrids of the family Lamiaceae – chocolate mint (Mentha piperita × ‘Chocolate’), pineapple mint (Mentha suaveolens ‘Variegata’), apple mint (Mentha × rotundifolia), spearmint (Mentha spicata), orange mint (Mentha × piperita ‘Granada’) and strawberry mint (Mentha × villosa ‘Strawberry’) – were investigated for antimicrobial effects against plant pathogenic bacteria: Agrobacterium tumefaciens, Pseudomonas syringae pv. syringae and Xanthomonas arboricola pv. corylina. The screening was carried out in vitro on agar plates filled with the target organism. All essential oils screened exhibited a higher level of antibacterial activity against A. tumefaciens and X. arboricola pv. corylina than streptomycin used as a standard in all tests. The antimicrobial effect of streptomycin and five mint oils was at the same level for P. syringae pv. syringae. There were no significant differences in the influence of the chocolate mint oil on the growth inhibition of all bacteria tested. Plant essential oils from pineapple mint, apple mint, spearmint and strawberry mint showed the weakest antimicrobial activity against P. syringae pv. syringae and the strongest towards A. tumefaciens and X. arboricola pv. corylina. The essential oils from strawberry mint, pineapple mint, spearmint and apple mint had the strongest effect on A. tumefaciens, and the lowest inhibitory activity was exhibited by the chocolate mint and orange mint essential oils. X. arboricola pv. corylina was the most sensitive to the strawberry mint, pineapple mint and spearmint oils. The chocolate mint oil showed the greatest activity against P. syringae pv. syringae.

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Antimicrobial properties of actively purified secondary metabolites isolated from different marine organisms

Current Pharmaceutical Biotechnology ◽

10.2174/1389201021666200730144536 ◽

2020 ◽

Vol 21 ◽

Author(s):

Nilushi Indika Bamunu Arachchige ◽

Fazlurrahman Khan ◽

Young-Mog Kim

Keyword(s):

Secondary Metabolites ◽

Pathogenic Bacteria ◽

Antimicrobial Agents ◽

Bacterial Species ◽

Antimicrobial Properties ◽

Antimicrobial Effect ◽

Cost Effective ◽

Resistance Mechanisms ◽

Marine Organisms ◽

Antimicrobial Compounds

Background: The treatment of infection caused by pathogenic bacteria becomes one of the serious concerns globally. The failure in the treatment was found due to the exhibition of multiple resistance mechanisms against the antimicrobial agents. Emergence of resistant bacterial species has also been observed due to prolong treatment using conventional antibiotics. To combat these problems, several alternative strategies have been employed using biological and chemically synthesized compounds as antibacterial agents. Marine organisms considered as one of the potential sources for the isolation of bioactive compounds due to the easily available, cost-effective, and eco-friendly. Methods: The online search methodology was adapted for the collection of information related to the antimicrobial properties of marine-derived compounds. These compound has been isolated and purified by different purification techniques, and their structure also characterized. Furthermore, the antibacterial activities have been reported by using broth microdilution as well as disc diffusion assays. Results: The present review paper describes the antimicrobial effect of diverse secondary metabolites which are isolated and purified from the different marine organisms. The structural elucidation of each secondary metabolite has also been done in the present paper, which will help for the in silico designing of the novel and potent antimicrobial compounds. Conclusion: A thorough literature search has been made and summarizes the list of antimicrobial compounds that are isolated from both prokaryotic and eukaryotic marine organisms. The information obtained from the present paper will be helpful for the application of marine compounds as antimicrobial agents against different antibiotic-resistant human pathogenic bacteria.

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