Preparation and antibacterial activity of CoFe2O4/SiO2/Ag composite impregnated with streptomycin

Kooti, M.; Gharineh, S.; Mehrkhah, M.; Shaker, A. M.; Motamedi, Hossein

doi:10.1016/j.cej.2014.07.139

Cited by 81 publications

(37 citation statements)

References 65 publications

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“…In the same trend the rate of inhibition of E.coli was higher than that of S. aureus. The current results are in good harmony with several authors who reported that the nanocomposites of CoFe 2 O 4 (Sanpo et al, 2013), polyaniline and nanosilver (Kooti et al, 2014), and CoFe 2 O 4 /SiO2/Ag composite (Kooti et al, 2015) showed high antibacterial activity. Moreover, Antoniea et al (2012) found that the magnetite and (CoFe 2 O 4 ) NPs induced the most significant effects in S. aureus and B. subtilis.…”

Section: Bacillus Cereus Staphylococcus Aureus Salmonella Typhi Eschesupporting

confidence: 91%

Synthesis and characterization of cobalt ferrites nanoparticles with cytotoxic and antimicrobial properties

Hathout¹,

Aljawish²,

Sabry³

et al. 2017

J App Pharm Sci

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Recently, the application of nanotechnology in food sector and the agriculture attract the attention compared to its biomedical application. The aims of the current study was to synthesize and characterize cobalt ferrites nanoparticles [(CoFe2O4) NPs] by combustion method employing glycine as fuels and to evaluate their antimicrobial against pathogenic bacteria and fungi and anti cancer properties against MCF-7 breast cancer cells line. The results indicated that the particles size of the synthesized (CoFe2O4) NPs was 40 nm. These (CoFe2O4) NPs showed potential antibacterial properties against Gram-negative bacteria (Escherichia coli, Salmonella typhi) and Gram-positive bacteria (Staphylococcus aureus, Bacillus cereus) as well as the pathogenic fungi (Aspergillus flavus and Aspergillus ochraceus) in a dose dependent manner with maximum concentration of 1.8 mg/ml. (CoFe2O4) NPs also showed weak antiradical but have cytotoxic effects against MCF-7 breast cancer cells line and succeeded to decrease the cell viability at a concentration of 2 mg/ml. It could be concluded that (CoFe2O4) NPs is a promise candidate as antimicrobial and anticancer agent for food sector and medical application.

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Section: Bacillus Cereus Staphylococcus Aureus Salmonella Typhi Eschesupporting

confidence: 91%

Synthesis and characterization of cobalt ferrites nanoparticles with cytotoxic and antimicrobial properties

Hathout¹,

Aljawish²,

Sabry³

et al. 2017

J App Pharm Sci

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“…The squareness is strongly influenced by magnetic anisotropy of the samples, particle size, shape density and synthesis techniques [45][46]. In the presently investigated samples, M r /M s ranges from 0.24 to 0.39 which is well below the typical value ~1 for single domain isolated ferromagnetic particles.…”

Section: H-w Plots For Nanoparticles Under Investigation Are Shown Inmentioning

confidence: 99%

Enhancement of magnetic properties of Ni0.5Zn0.5Fe2O4 nanoparticles prepared by the co-precipitation method

Thakur

Kumar

Thakur

et al. 2016

Ceramics International

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“…Por outro lado, seu grupo R é capaz de reagir com os monômeros a serem polimerizados formando assim materiais híbridos orgânicos inorgânicos [13]. Os agentes silanos mais utilizados são: 3-aminopropiltrimetoxissilano, 3-aminopropiltrietoxissilano, tetraetilortossilicato, meta-criloxipropiltrimethoxissilano, 3-cloropropil-trimetoxissilano e trietoxivinilsilano [14][15][16][17].…”

Section: +unclassified

Modificação da superfície de nanocompósitos de Fe2O3/Fe3O4 visando seu uso para imobilização da glicose oxidase

et al. 2017

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INTRODUÇÃOAs nanopartículas magnéticas (NPMs) Químico, Sabará, MG, patytaraujo@gmail.com, daniel.r.cornejo@gmail.com, dbrandao@jhs.med.br, libiaconrado@yahoo.com.br, ana.costa@ufcg.edu.br Resumo O aumento no número de pessoas portadoras de diabetes nos últimos anos e a elevada relação custo benefício da tecnologia de biossensores existentes têm motivado um crescente interesse no desenvolvimento de biossensores de detecção de glicose baseados na imobilização da glicose oxidase (GOD) utilizando-se principalmente nanopartículas magnéticas. Neste contexto, nanocompósitos de Fe 2 O 3 /Fe 3 O 4 foram sintetizados por reação de combustão e tiveram sua superfície modificada com 3-aminopropiltrimetoxissilano via reação de silanização e com quitosana via reação de funcionalização para obter um material híbrido que foi avaliado como possível imobilizador de GOD. As amostras foram caracterizadas por difração de raios X, espectroscopia de infravermelho com transformada de Fourier, análise termogravimétrica, microscopia eletrônica de varredura e de transmissão, propriedades magnéticas e citotoxidade in vitro. Os resultados mostraram que foi possível obter o compósito ferrimagnético, a modificação da superfície reduziu a magnetização de saturação, mas manteve a característica ferrimagnetica, e todas as amostras foram consideradas não tóxicas. Para os testes preliminares de imobilização da GOD foi revelado que o nanocompósito modificado com silano e quitosana apresentou melhor resultado, cerca de 2,7 mg de GOD imobilizados para cada 100 mg de nanocompósito, o que torna este material uma possível alternativa para ser utilizado na fabricação de bissensores de GOD. Palavras-chave: nanocompósitos, modificação da superfície, imobilização de GOD. Abstract The increase in the number of people with diabetes in recent years and the high cost-benefit ratio of the existing biosensor technology have increased the interest for the development of glucose detection biosensor based on immobilization of glucose-oxidase (GOD

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Preparation and antibacterial activity of CoFe2O4/SiO2/Ag composite impregnated with streptomycin

Cited by 81 publications

References 65 publications

Synthesis and characterization of cobalt ferrites nanoparticles with cytotoxic and antimicrobial properties

Synthesis and characterization of cobalt ferrites nanoparticles with cytotoxic and antimicrobial properties

Enhancement of magnetic properties of Ni0.5Zn0.5Fe2O4 nanoparticles prepared by the co-precipitation method

Modificação da superfície de nanocompósitos de Fe2O3/Fe3O4 visando seu uso para imobilização da glicose oxidase

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