TY  - DATA
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Zavašnik, Janez
AU  - Žagar, Kristina
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3104
PB  - Springer Wien, Wien
T2  - Microchimica Acta
T1  - Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3104
ER  - 

@misc{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Zavašnik, Janez and Žagar, Kristina and Kalcher, Kurt",
year = "2017",
publisher = "Springer Wien, Wien",
journal = "Microchimica Acta",
title = "Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3104"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Zavašnik, J., Žagar, K.,& Kalcher, K.. (2017). Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5. in Microchimica Acta
Springer Wien, Wien..
https://hdl.handle.net/21.15107/rcub_cherry_3104

Mehmeti E, Stanković D, Chaiyo S, Zavašnik J, Žagar K, Kalcher K. Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5. in Microchimica Acta. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_3104 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Zavašnik, Janez, Žagar, Kristina, Kalcher, Kurt, "Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5" in Microchimica Acta (2017),
https://hdl.handle.net/21.15107/rcub_cherry_3104 .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Zavašnik, Janez
AU  - Zagar, Kristina
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2438
AB  - A reagentless third generation electrochemical glucose biosensor was fabricated based on wiring the template enzyme glucose oxidase (GOx) with graphene nanoribbons (GN) in order to create direct electron transfer between the co-factor (flavin adenine dinucleotide, FAD) and the electrode. The strategy involved: (i) isolation of the apo-enzyme by separating it from its co-enzyme; (ii) preparation of graphene nanoribbons (GN) by oxidative unzipping of multi-walled carbon nanotubes; (iii) adsorptive immobilization of GNs on the surface of a screen printed carbon electrode (SPCE); (iv) covalent attachment of FAD to the nanoribbons; (v) recombination of the apo-enzyme with the covalently bound FAD to the holoenzyme; and (vi) stabilization of the bio-layer with a thin membrane of Nafion. The biosensor (referred to as GN/FAD/apo-GOx/Nafion/SPCE) is operated at a potential of +0.475 V vs Ag/AgCl/{3 M KCl} in flow-injection mode with an oxygen-free phosphate buffer (pH 7.5) acting as a carrier. The signals are linearly proportional to the concentration of glucose in the range from 50 to 2000 mgai...L-1 with a detection limit of 20 mgai...L-1. The repeatability (10 measurements, at 1000 mgai...L-1 glucose) is +/- 1.4% and the reproducibility (5 sensors, 1000 mgai...L-1 glucose) is +/- 1.8%. The biosensor was applied to the determination of glucose in human serum.
PB  - Springer Wien, Wien
T2  - Microchimica Acta
T1  - Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor
VL  - 184
IS  - 4
SP  - 1127
EP  - 1134
DO  - 10.1007/s00604-017-2115-5
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Zavašnik, Janez and Zagar, Kristina and Kalcher, Kurt",
year = "2017",
abstract = "A reagentless third generation electrochemical glucose biosensor was fabricated based on wiring the template enzyme glucose oxidase (GOx) with graphene nanoribbons (GN) in order to create direct electron transfer between the co-factor (flavin adenine dinucleotide, FAD) and the electrode. The strategy involved: (i) isolation of the apo-enzyme by separating it from its co-enzyme; (ii) preparation of graphene nanoribbons (GN) by oxidative unzipping of multi-walled carbon nanotubes; (iii) adsorptive immobilization of GNs on the surface of a screen printed carbon electrode (SPCE); (iv) covalent attachment of FAD to the nanoribbons; (v) recombination of the apo-enzyme with the covalently bound FAD to the holoenzyme; and (vi) stabilization of the bio-layer with a thin membrane of Nafion. The biosensor (referred to as GN/FAD/apo-GOx/Nafion/SPCE) is operated at a potential of +0.475 V vs Ag/AgCl/{3 M KCl} in flow-injection mode with an oxygen-free phosphate buffer (pH 7.5) acting as a carrier. The signals are linearly proportional to the concentration of glucose in the range from 50 to 2000 mgai...L-1 with a detection limit of 20 mgai...L-1. The repeatability (10 measurements, at 1000 mgai...L-1 glucose) is +/- 1.4% and the reproducibility (5 sensors, 1000 mgai...L-1 glucose) is +/- 1.8%. The biosensor was applied to the determination of glucose in human serum.",
publisher = "Springer Wien, Wien",
journal = "Microchimica Acta",
title = "Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor",
volume = "184",
number = "4",
pages = "1127-1134",
doi = "10.1007/s00604-017-2115-5"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Zavašnik, J., Zagar, K.,& Kalcher, K.. (2017). Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor. in Microchimica Acta
Springer Wien, Wien., 184(4), 1127-1134.
https://doi.org/10.1007/s00604-017-2115-5

Mehmeti E, Stanković D, Chaiyo S, Zavašnik J, Zagar K, Kalcher K. Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor. in Microchimica Acta. 2017;184(4):1127-1134.
doi:10.1007/s00604-017-2115-5 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Zavašnik, Janez, Zagar, Kristina, Kalcher, Kurt, "Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor" in Microchimica Acta, 184, no. 4 (2017):1127-1134,
https://doi.org/10.1007/s00604-017-2115-5 . .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Samphao, Anchalee
AU  - Dojčinović, Biljana P.
AU  - Kalcher, Kurt
PY  - 2016
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2353
AB  - This work presents the electrochemical behavior of levodopa (L-DOPA), at boron-doped diamond (BDD) electrodes, using cycling voltammetry (CV), in Britton-Robinson (BR) buffer solution, and application of the proposed electrode for the determination of L-DOPA in extracts from the seeds of velvet bean (Mucuna prurita Hook or Mucuna pruriens (L.) DC.). L-DOPA provides a well-defined and single oval-shape oxidation peak at +0.8 V vs. Ag/AgCl (3 M KCl) reference electrode in BR buffer solution at pH 3.0. Experimental parameters, such as pH of supporting electrolyte and square wave voltammetry (SWV) operating parameters (frequency and modulation amplitude) were optimized. The effect of possible interferences was evaluated. Under optimal conditions the detection limit of the developed method was 0.8 mu M and the calibration curve for L-DOPA was linear in the range from 2 to 100 mu M. The proposed method was successfully applied to the determination of L-DOPA in an extract from the seeds of Mucuna prurita. The obtained result was in good agreement with obtained by photometry with 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS). The developed approach can be beneficial for the quantification of L-DOPA using a BDD electrode as up-to-date potential alternative sensor for electroanalytical applications.
PB  - Slovensko Kemijsko Drustvo, Ljubljana
T2  - Acta Chimica Slovenica
T1  - Rapid Electrochemical Method for the Determination of L-DOPA in Extract From the Seeds of Mucuna Prurita
VL  - 63
IS  - 2
SP  - 220
EP  - 226
DO  - 10.17344/acsi.2015.1541
ER  - 

@article{
author = "Stanković, Dalibor and Samphao, Anchalee and Dojčinović, Biljana P. and Kalcher, Kurt",
year = "2016",
abstract = "This work presents the electrochemical behavior of levodopa (L-DOPA), at boron-doped diamond (BDD) electrodes, using cycling voltammetry (CV), in Britton-Robinson (BR) buffer solution, and application of the proposed electrode for the determination of L-DOPA in extracts from the seeds of velvet bean (Mucuna prurita Hook or Mucuna pruriens (L.) DC.). L-DOPA provides a well-defined and single oval-shape oxidation peak at +0.8 V vs. Ag/AgCl (3 M KCl) reference electrode in BR buffer solution at pH 3.0. Experimental parameters, such as pH of supporting electrolyte and square wave voltammetry (SWV) operating parameters (frequency and modulation amplitude) were optimized. The effect of possible interferences was evaluated. Under optimal conditions the detection limit of the developed method was 0.8 mu M and the calibration curve for L-DOPA was linear in the range from 2 to 100 mu M. The proposed method was successfully applied to the determination of L-DOPA in an extract from the seeds of Mucuna prurita. The obtained result was in good agreement with obtained by photometry with 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS). The developed approach can be beneficial for the quantification of L-DOPA using a BDD electrode as up-to-date potential alternative sensor for electroanalytical applications.",
publisher = "Slovensko Kemijsko Drustvo, Ljubljana",
journal = "Acta Chimica Slovenica",
title = "Rapid Electrochemical Method for the Determination of L-DOPA in Extract From the Seeds of Mucuna Prurita",
volume = "63",
number = "2",
pages = "220-226",
doi = "10.17344/acsi.2015.1541"
}

Stanković, D., Samphao, A., Dojčinović, B. P.,& Kalcher, K.. (2016). Rapid Electrochemical Method for the Determination of L-DOPA in Extract From the Seeds of Mucuna Prurita. in Acta Chimica Slovenica
Slovensko Kemijsko Drustvo, Ljubljana., 63(2), 220-226.
https://doi.org/10.17344/acsi.2015.1541

Stanković D, Samphao A, Dojčinović BP, Kalcher K. Rapid Electrochemical Method for the Determination of L-DOPA in Extract From the Seeds of Mucuna Prurita. in Acta Chimica Slovenica. 2016;63(2):220-226.
doi:10.17344/acsi.2015.1541 .

Stanković, Dalibor, Samphao, Anchalee, Dojčinović, Biljana P., Kalcher, Kurt, "Rapid Electrochemical Method for the Determination of L-DOPA in Extract From the Seeds of Mucuna Prurita" in Acta Chimica Slovenica, 63, no. 2 (2016):220-226,
https://doi.org/10.17344/acsi.2015.1541 . .