Investigation of antioxidant property of iron oxide particlesby 1′-1′diphenylpicryl-hydrazyle (DPPH) method

Paul, Samrat; Saikia, Jyoti Prasad; Samdarshi, S.K.; Konwar, Bolin Kumar

doi:10.1016/j.jmmm.2009.07.004

Cited by 76 publications

(40 citation statements)

References 11 publications

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“…This is the first report and there is no data for direct comparison. However, the results obtained can be discussed in comparison to the results obtained for iron oxide particles [6]. Nickel oxide nanoparticles show enhanced antioxidant potency as compared to iron oxides.…”

Section: Resultsmentioning

confidence: 96%

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Nickel oxide nanoparticles: A novel antioxidant

Saikia

Paul

Konwar

et al. 2010

Colloids and Surfaces B: Biointerfaces

119

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Section: Resultsmentioning

confidence: 96%

“…But scanty reports are available on antioxidant property of these particles. In our earlier paper [6] we have reported antioxidant property of iron oxide particles. Nickel oxide is another very important strategic material used in biosystems.…”

Section: Introductionmentioning

confidence: 90%

Nickel oxide nanoparticles: A novel antioxidant

Saikia

Paul

Konwar

et al. 2010

Colloids and Surfaces B: Biointerfaces

119

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“…In another study, CuO nanoparticles at 120 mg/mL concentration showed 85% DPPH quenching activity [36]. Also, CoFe2O4, Fe2O4 and NiO nanoparticles were shown to exhibit relatively good antioxidant characteristics compared to their bulk materials [51][52][53]. However, systematic studies on the antioxidant properties of ferrite nanoparticles are not well documented.…”

Section: Antioxidant Activitymentioning

confidence: 99%

Evaluation of Antioxidant and Cytotoxicity Activities of Copper Ferrite (CuFe2O4) and Zinc Ferrite (ZnFe2O4) Nanoparticles Synthesized by Sol-Gel Self-Combustion Method

et al. 2016

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Spinel copper ferrite (CuFe 2 O 4 ) and zinc ferrite (ZnFe 2 O 4 ) nanoparticles were synthesized using a sol-gel self-combustion technique. The structural, functional, morphological and magnetic properties of the samples were investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). XRD patterns conform to the copper ferrite and zinc ferrite formation, and the average particle sizes were calculated by using a transmission electron microscope, the measured particle sizes being 56 nm for CuFe 2 O 4 and 68 nm for ZnFe 2 O 4. Both spinel ferrite nanoparticles exhibit ferromagnetic behavior with saturation magnetization of 31 emug´1 for copper ferrite (50.63 Am 2 /Kg) and 28.8 Am 2 /Kg for zinc ferrite. Both synthesized ferrite nanoparticles were equally effective in scavenging 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) free radicals. ZnFe 2 O 4 and CuFe 2 O 4 nanoparticles showed 30.57%˘1.0% and 28.69%˘1.14% scavenging activity at 125 µg/mL concentrations. In vitro cytotoxicity study revealed higher concentrations (>125 µg/mL) of ZnFe 2 O 4 and CuFe 2 O 4 with increased toxicity against MCF-7 cells, but were found to be non-toxic at lower concentrations suggesting their biocompatibility.

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“…There have been very few reports on the antioxidant activity and the catalytic ability of inorganic nanoparticles to scavenge free radicals [38][39][40]. To further understand the interaction between CdTe QDs and DPPH • , we have investigated the interaction of TGA-capped CdTe QDs with DPPH • free radicals.…”

Section: Kinetics Of the Interaction Of Dpph • With Tga-capped Cdtementioning

confidence: 99%

Interaction of CdTe Quantum Dots with 2,2-Diphenyl-1-Picrylhydrazyl Free Radical: A Spectroscopic, Fluorimetric and Kinetic Study

2011

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The interaction of 2,2-diphenyl-1-picrylhydrazyl (DPPH(·) free radical with thiol-capped CdTe quantum dots (QDs) has been studied by UV-vis spectroscopy, steady state and time resolved fluorescence measurements. Addition of DPPH(·) radical to CdTe QDs resulted in fluorescence quenching. The interaction occurs through static quenching as this was confirmed by fluorescence lifetime measurements. Time course absorption studies indicates that DPPH(·) may be reduced by interaction with QDs to the substituted hydrazine form (2,2-diphenyl-1-picrylhydrazine) DPPH-H. The mechanism of fluorescence quenching of CdTe QDs by DPPH(·) is proposed.

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Investigation of antioxidant property of iron oxide particlesby 1′-1′diphenylpicryl-hydrazyle (DPPH) method

Cited by 76 publications

References 11 publications

Nickel oxide nanoparticles: A novel antioxidant

Nickel oxide nanoparticles: A novel antioxidant

Evaluation of Antioxidant and Cytotoxicity Activities of Copper Ferrite (CuFe2O4) and Zinc Ferrite (ZnFe2O4) Nanoparticles Synthesized by Sol-Gel Self-Combustion Method

Interaction of CdTe Quantum Dots with 2,2-Diphenyl-1-Picrylhydrazyl Free Radical: A Spectroscopic, Fluorimetric and Kinetic Study

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