Amperometric detection of dopamine based on tyrosinase–SWNTs–Ppy composite electrode

Min, Kyoungseon; Yoo, Young Je

doi:10.1016/j.talanta.2009.08.032

Cited by 126 publications

(58 citation statements)

References 23 publications

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“…The differences in current seen for the PPy and PPy/PhyA films indicate the occurrence of electrostatic interactions between PhyA and its matrix, PPy; this is the expectable behavior for films with insulating enzymes entrapped into a polymeric matrix [19]. The voltammogram recorded in the literature for a different matrix (a metallophthalocyanine-metalloporphyrin complex) without and with immobilized glucose oxidase [20,21] is very close in shape to the curves seen in Fig. 1, indicating that the presence of enzyme has a role in the voltammetric response of the electrode material.…”

Section: Resultsmentioning

confidence: 99%

Polypyrrole/phytase amperometric biosensors for the determination of phytic acid in standard solutions

Rodrigues

Moraes

Brisolari

et al. 2011

Sensors and Actuators B: Chemical

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Section: Resultsmentioning

confidence: 99%

Polypyrrole/phytase amperometric biosensors for the determination of phytic acid in standard solutions

Rodrigues

Moraes

Brisolari

et al. 2011

Sensors and Actuators B: Chemical

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“…It catalyzes orthohydroxylation of monophenols to diphenols by cresolase activity. It also successively oxidizes diphenols to quinone by catecholase activity [20]. Accordingly, based on tyrosinase activity L-Dopa can be produced by o-hydroxylation of L-Tyrosine by cresolase activity [21] therefore in the present investigation bacterial isolates which exhibited maximum tyrosinase activity were further assayed for L-Dopa production.…”

Section: L-dopa Assaymentioning

confidence: 98%

Evaluation of Tyrosinase Producing Indigenous Bacterial Strains With Reference to Their Efficacy In L-Dopa Production

Sharma¹,

Vyas²,

Rehman³

2018

International Journal of Microbiology Research

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“…Nafion is employed to prevent the interference from AA. The selectivity issue can also be addressed by the immobilization of tyrosinase on a SWCNTs-PPy composite, since the enzyme only oxidize DA whereas AA remains uncatalyzed (Min and Yoo, 2009). Sodium dodecyl sulfate functionalized aligned MWCNT electrodes can be also used for DA detection .…”

Section: Neurotransmitters/neurochemicalsmentioning

confidence: 99%

Advances in carbon nanotube based electrochemical sensors for bioanalytical applications

Vashist

Zheng

Al‐Rubeaan

et al. 2011

Biotechnology Advances

407

218

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Electrochemical (EC) sensing approaches have exploited the use of carbon nanotubes (CNTs) as electrode materials owing to their unique structures and properties to provide strong electrocatalytic activity with minimal surface fouling. Nanofabrication and device integration technologies have emerged along with significant advances in the synthesis, purification, conjugation and biofunctionalization of CNTs. Such combined efforts have contributed towards the rapid development of CNT-based sensors for a plethora of important analytes with improved detection sensitivity and selectivity. The use of CNTs opens an opportunity for the direct electron transfer between the enzyme and the active electrode area. Of particular interest are also excellent electrocatalytic activities of CNTs on the redox reaction of hydrogen peroxide and nicotinamide adenine dinucleotide, two major by-products of enzymatic reactions. This excellent electrocatalysis holds a promising future for the simple design and implementation of on-site biosensors for oxidases and dehydrogenases with enhanced selectivity. To date, the use of an anti-interference layer or an artificial electron mediator is critically needed to circumvent unwanted endogenous electroactive species. Such interfering species are effectively suppressed by using CNT based electrodes since the oxidation of NADH, thiols, hydrogen peroxide, etc. by CNTs can be performed at low potentials. Nevertheless, the major future challenges for the development of CNT-EC sensors include miniaturization, optimization and simplification of the procedure for fabricating CNT based electrodes with minimal non-specific binding, high sensitivity and rapid response followed by their extensive validation using "real world" samples. A high resistance to electrode fouling and selectivity are the two key pending issues for the application of CNT-based biosensors in clinical chemistry, food quality and control, waste water treatment and bioprocessing.

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Amperometric detection of dopamine based on tyrosinase–SWNTs–Ppy composite electrode

Cited by 126 publications

References 23 publications

Polypyrrole/phytase amperometric biosensors for the determination of phytic acid in standard solutions

Polypyrrole/phytase amperometric biosensors for the determination of phytic acid in standard solutions

Evaluation of Tyrosinase Producing Indigenous Bacterial Strains With Reference to Their Efficacy In L-Dopa Production

Advances in carbon nanotube based electrochemical sensors for bioanalytical applications

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