Application of the modified carbon paste electrodes for determination of catechin
Authors
Stojanović, Z.Đurović, A.
Kravić, S.
Suturović, Z.
Brezo, T.
Richtera, I
Bytešníková, Z
Grahovac, Nada
Conference object (Published version)
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Catechin is a flavonoid compound with polyphenolic structure naturally occurring in plants, fruits, tea, red
wine and cacao products. Many beneficial effects are associated with catechin consumption such as
antioxidant, anticarcinogenic, anti-inflammatory, antiatherogenic, antibacterial and antiviral activity.
Determination of catechin is typically based on the use of high-performance liquid chromatography, but also
methods such as spectrophotometry and capillary electrophoresis are reported.
In this work we investigated the use of different modifications of a carbon paste electrode (CPE) for
voltammetric determination of catechin. The reason for introducing a modifier into the carbon paste was to
increase the sensitivity of the voltammeircic techniques, due to the catalytic effect of the modifier on the
electrode processes. Multi-walled carbon nanotubes (MWCNTs), antimony(Ill) oxide and bismuth
nanoparticles are investigated as bulk modifiers for preparation of CPE with conce...ntration of 5% (w/w).
Electroanalytical measurements are performed in 0.1 M phosphate buffer pH 7.0 using cyclic voltammetry
and square wave voltammetry, in the concentration range from 1 to 20 mg/dm* of catechin.
Two oxidation peaks of catechin are observed for all studied modified CPEs and bare CPE, with significantly
higher intensity of the first peak. The results also showed improvement of sensitivity by using the modified
CPEs in comparison to unmodified CPE. The application of MWCNTs as a modifier contributed to the
highest sensitivity for catechin determination in relation to the other modifiers. These preliminary results
show that MWCNTs modified CPE can be used as a very sensitive sensor for catechin determination in real
samples.
Keywords:
catechin / carbon paste electrode / modification / voltammetrySource:
Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia., 2019, 126-129Publisher:
- Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet
Funding / projects:
- Improvement and development of hygienic and technological procedures in production of animal originating foodstuffs with the aim of producing high-quality and safe products competetive on the global market (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-46009)
- Development of the new functional confectionery products based on oil crops (RS-MESTD-Technological Development (TD or TR)-31014)
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Institution/Community
FiVeRTY - CONF AU - Stojanović, Z. AU - Đurović, A. AU - Kravić, S. AU - Suturović, Z. AU - Brezo, T. AU - Richtera, I AU - Bytešníková, Z AU - Grahovac, Nada PY - 2019 UR - http://fiver.ifvcns.rs/handle/123456789/3704 AB - Catechin is a flavonoid compound with polyphenolic structure naturally occurring in plants, fruits, tea, red wine and cacao products. Many beneficial effects are associated with catechin consumption such as antioxidant, anticarcinogenic, anti-inflammatory, antiatherogenic, antibacterial and antiviral activity. Determination of catechin is typically based on the use of high-performance liquid chromatography, but also methods such as spectrophotometry and capillary electrophoresis are reported. In this work we investigated the use of different modifications of a carbon paste electrode (CPE) for voltammetric determination of catechin. The reason for introducing a modifier into the carbon paste was to increase the sensitivity of the voltammeircic techniques, due to the catalytic effect of the modifier on the electrode processes. Multi-walled carbon nanotubes (MWCNTs), antimony(Ill) oxide and bismuth nanoparticles are investigated as bulk modifiers for preparation of CPE with concentration of 5% (w/w). Electroanalytical measurements are performed in 0.1 M phosphate buffer pH 7.0 using cyclic voltammetry and square wave voltammetry, in the concentration range from 1 to 20 mg/dm* of catechin. Two oxidation peaks of catechin are observed for all studied modified CPEs and bare CPE, with significantly higher intensity of the first peak. The results also showed improvement of sensitivity by using the modified CPEs in comparison to unmodified CPE. The application of MWCNTs as a modifier contributed to the highest sensitivity for catechin determination in relation to the other modifiers. These preliminary results show that MWCNTs modified CPE can be used as a very sensitive sensor for catechin determination in real samples. PB - Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet C3 - Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia. T1 - Application of the modified carbon paste electrodes for determination of catechin EP - 129 SP - 126 UR - https://hdl.handle.net/21.15107/rcub_fiver_3704 ER -
@conference{ author = "Stojanović, Z. and Đurović, A. and Kravić, S. and Suturović, Z. and Brezo, T. and Richtera, I and Bytešníková, Z and Grahovac, Nada", year = "2019", abstract = "Catechin is a flavonoid compound with polyphenolic structure naturally occurring in plants, fruits, tea, red wine and cacao products. Many beneficial effects are associated with catechin consumption such as antioxidant, anticarcinogenic, anti-inflammatory, antiatherogenic, antibacterial and antiviral activity. Determination of catechin is typically based on the use of high-performance liquid chromatography, but also methods such as spectrophotometry and capillary electrophoresis are reported. In this work we investigated the use of different modifications of a carbon paste electrode (CPE) for voltammetric determination of catechin. The reason for introducing a modifier into the carbon paste was to increase the sensitivity of the voltammeircic techniques, due to the catalytic effect of the modifier on the electrode processes. Multi-walled carbon nanotubes (MWCNTs), antimony(Ill) oxide and bismuth nanoparticles are investigated as bulk modifiers for preparation of CPE with concentration of 5% (w/w). Electroanalytical measurements are performed in 0.1 M phosphate buffer pH 7.0 using cyclic voltammetry and square wave voltammetry, in the concentration range from 1 to 20 mg/dm* of catechin. Two oxidation peaks of catechin are observed for all studied modified CPEs and bare CPE, with significantly higher intensity of the first peak. The results also showed improvement of sensitivity by using the modified CPEs in comparison to unmodified CPE. The application of MWCNTs as a modifier contributed to the highest sensitivity for catechin determination in relation to the other modifiers. These preliminary results show that MWCNTs modified CPE can be used as a very sensitive sensor for catechin determination in real samples.", publisher = "Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet", journal = "Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.", title = "Application of the modified carbon paste electrodes for determination of catechin", pages = "129-126", url = "https://hdl.handle.net/21.15107/rcub_fiver_3704" }
Stojanović, Z., Đurović, A., Kravić, S., Suturović, Z., Brezo, T., Richtera, I., Bytešníková, Z.,& Grahovac, N.. (2019). Application of the modified carbon paste electrodes for determination of catechin. in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia. Novi Sad : Univerzitet u Novom Sadu, Tehnološki fakultet., 126-129. https://hdl.handle.net/21.15107/rcub_fiver_3704
Stojanović Z, Đurović A, Kravić S, Suturović Z, Brezo T, Richtera I, Bytešníková Z, Grahovac N. Application of the modified carbon paste electrodes for determination of catechin. in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia.. 2019;:126-129. https://hdl.handle.net/21.15107/rcub_fiver_3704 .
Stojanović, Z., Đurović, A., Kravić, S., Suturović, Z., Brezo, T., Richtera, I, Bytešníková, Z, Grahovac, Nada, "Application of the modified carbon paste electrodes for determination of catechin" in Book of Proceedings, 21st Danube-Kris-Mures-Tisza (DKMT) Euroregional Conference on Environment and Health, University of Novi Sad, Faculty of Technology, Novi Sad, Serbia. (2019):126-129, https://hdl.handle.net/21.15107/rcub_fiver_3704 .