A novel horseradish peroxidase biosensor towards the detection of dopamine: A voltammetric study

Raghu, P.; Reddy, T. Madhusudana; Gopal, Priya; Reddaiah, K.; Sreedhar, N. Y.

doi:10.1016/j.enzmictec.2014.01.002

Cited by 51 publications

(28 citation statements)

References 54 publications

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“…Carbon nanomaterial-modified electrodes are commonly used for the selective determination of dopamine. For example (Raghu et al 2014), studied the oxidation of dopamine by immobilizing multiwalled carbon nanotubes on a poly (glycine) In this study, a facile, economical, and green synthesis of water-soluble carbon dots is reported.…”

Section: Introductionmentioning

confidence: 99%

Determination of Dopamine with a Modified Carbon Dot Electrode

Tang

et al. 2015

Analytical Letters

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A facile and green synthesis was employed to synthesize water-soluble carbon dots that were shown to be uniform monodisperse spheres with an average diameter of approximately 4 nanometers. Because of their strong adsorption, the carbon dots were assembled on a glassy carbon electrode without a bridging agent. The modified electrode was employed for the sensitive determination of dopamine. In 0.1 mole per liter phosphate buffer at pH 6.0, the peak currents of dopamine increased at the modified electrode. A calibration curve for dopamine was obtained from 1.5 × 10 7 to 1.5 × 10 4 mole per liter with a limit of detection of 2.6 × 10 8 mole per liter. The sensor was employed to determine dopamine in human plasma without interferences from uric acid and ascorbic acid. The carbon dot modified electrode also exhibited Downloaded by [University of Colorado -Health Science Library] at 21:37 30 March 2015 2 high stability and excellent precision. The results demonstrate the facile fabrication of a carbon dot-based sensor and a sensitive method for the determination of dopamine.

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Section: Introductionmentioning

confidence: 99%

Determination of Dopamine with a Modified Carbon Dot Electrode

Tang

et al. 2015

Analytical Letters

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“…Reprinted with permission from Ref [38]. [42] reported the immobilization of horseradish peroxidase (HRP) and multi-walled carbon nanotubes (MWCNTs) on a poly (Gly) modified carbon paste electrode. Cui et al [50] constructed a new kind fluorescence-encoded magnetic nanoprobe for cell imaging by using SWCNT as the building scaffold and silica as a protecting shell of buried Au NPs and superparamagnetic iron oxide nanoparticles.…”

Section: Carbon Nanotubeàsilica Composite Matrixmentioning

confidence: 98%

Recent advances in silica-based biosensors: a review

Chen

Zhang

Chang

et al. 2015

Journal of the Chinese Advanced Materials Society

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Silica has become a common platform for various catalytic and chemical reactions, biosensor, and drug release owing to its low toxicity, chemical and physical stabilities, large surface area, tunable pore sizes, and well-defined surface chemistry. Therefore, biomolecules encapsulated within a porous silica host has provoked significant interest in the development, application, and market of silica-based biosensors due to its potential application in analytic chemistry and biological science. Considerable progresses have been achieved in past few decades. This review focuses primarily on such advances in synthesis and applications of silica-based biosensors, especially emphasizing development which has occurred in the last 10 years, further driving readers to understand and construct various silica-based biosensors with high sensitivity and high stability.

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“…Among the all, electroanalytical methods such as cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) were widely used for the monitoring of various organic, inorganic and environmental pollutants ,. Nowadays, the surface modification of electrodes with different conductive and catalytic materials is of more advantage for the analysis of different food,, drugs,, pesticides, and other chemically and biologically important molecules ,…”

Section: Introductionmentioning

confidence: 99%

Development, Characterization and Application of a Carbon‐Based Nanomaterial Composite as an Electrochemical Sensor for Monitoring Natural Antioxidant (Gallic Acid) in Beverages

2017

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Gallic acid (GA) is an important organic acid, found in many natural plants and in food beverages. Here in, we have developed a chemical sensor for the monitoring of GA in wine, green tea and fruit juices. The oxidation of GA was found to be an irreversible process and the corresponding mechanism was proposed. The effect of pH on the oxidation behavior was studied and pH‐6.0 was selected as an optimum pH. Based on the scan rate results a linear relation was observed between the square root of scan rate and peak currents for GA, confirming the oxidation of GA as a diffusion controlled process. The kinetic parameters such as diffusion coefficient, heterogeneous rate constant and charge transfer coefficient values were determined. The limit of detection (LOD) and quantification (LOQ) values were calculated as 4.39 × 10‐7 M and 1.46 × 10‐6 M. The repeatability, reproducibility and stability of the developed sensor were examined and the results confirmed that the developed sensor was in superior in condition. Finally, the practical application of the developed sensor was scrutinized for the quantitative estimation of GA in wine, green tea and fruit juices.

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A novel horseradish peroxidase biosensor towards the detection of dopamine: A voltammetric study

Cited by 51 publications

References 54 publications

Determination of Dopamine with a Modified Carbon Dot Electrode

Determination of Dopamine with a Modified Carbon Dot Electrode

Recent advances in silica-based biosensors: a review

Development, Characterization and Application of a Carbon‐Based Nanomaterial Composite as an Electrochemical Sensor for Monitoring Natural Antioxidant (Gallic Acid) in Beverages

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