KFU. Card publication. Voltammetric Determination of Tannic Acid in Medicinal Plants Using Multi-Walled Carbon Nanotube-Modified Electrode

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FEDERAL UNIVERSITY

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VOLTAMMETRIC DETERMINATION OF TANNIC ACID IN MEDICINAL PLANTS USING MULTI-WALLED CARBON NANOTUBE-MODIFIED ELECTRODE

Form of presentation

Articles in international journals and collections

Year of publication

2023

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Authors, employees of KFU

Ziyatdinova Guzel Kamilevna, author

Authors, students KFU

Ivanova Mariya Petrovna, author

Bibliographic description in the original language

Ziyatdinova, G. Voltammetric determination of tannic acid in medicinal plants using multi-walled carbon nanotube-modified electrode / G. Ziyatdinova, M. Ivanova // Eng. Proc. – 2023. – V. 48. – � 1. – Article 53. – 6 p.

Annotation

Tannins are a class of natural phenolic antioxidants represented by oligomers and polymers. Tannic acid (gallotannin) (TA) is one of the most typical compounds widely distributed in plants. It has a wide application area in food technology and as a part of traditional herbal medicine in the treatment of various diseases. TA is one of the standards used in medicinal plant quality control for plants rich in tannins. Therefore, the development of sensitive and simple methods for TA quantification is of practical interest. Glassy carbon electrode modified with multi-walled carbon nanotubes (GCE/MWCNTs) has been developed for the determination of TA in medicinal plants. An improvement in TA voltammetric response has been achieved using modified electrode due to the high electroactive surface area and electron transfer rate vs. bare electrode. TA electrooxidation at the GCE/MWCNTs is an irreversible surface-controlled process involving the transfer of two electrons and two protons in the first step. In differential pulse mode using Britton–Robinson buffer pH 2.0 as the supporting electrolyte, a linear dynamic range of 0.10–7.5 μM with a detection limit of 0.038 μM has been obtained. The method has been applied for the analysis of infusions and decoctions of tannin-containing medicinal plants and compared to the spectrophotometric method. A positive correlation has been observed with ferric reducing power reflecting the total content of phenolic compounds in the sample.

Keywords

Voltammetry, chemically modified electrodes, carbon nanotubes, phenolic antioxidants, tannic acid, medicinal plants, phytoanalysis

The name of the journal

Engineering Proceedings

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186483443&doi=10.3390%2fCSAC2023-15165&partnerID=40&md5=136a7de5129e87ffddb31e2fd0ae2fc4

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=297465&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Ivanova Mariya Petrovna	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Ziyatdinova, G. Voltammetric determination of tannic acid in medicinal plants using multi-walled carbon nanotube-modified electrode / G. Ziyatdinova, M. Ivanova // Eng. Proc. – 2023. – V. 48. – � 1. – Article 53. – 6 p.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=297465&p_lang=2	ru_RU
dc.description.abstract	Engineering Proceedings	ru_RU
dc.description.abstract	Tannins are a class of natural phenolic antioxidants represented by oligomers and polymers. Tannic acid (gallotannin) (TA) is one of the most typical compounds widely distributed in plants. It has a wide application area in food technology and as a part of traditional herbal medicine in the treatment of various diseases. TA is one of the standards used in medicinal plant quality control for plants rich in tannins. Therefore, the development of sensitive and simple methods for TA quantification is of practical interest. Glassy carbon electrode modified with multi-walled carbon nanotubes (GCE/MWCNTs) has been developed for the determination of TA in medicinal plants. An improvement in TA voltammetric response has been achieved using modified electrode due to the high electroactive surface area and electron transfer rate vs. bare electrode. TA electrooxidation at the GCE/MWCNTs is an irreversible surface-controlled process involving the transfer of two electrons and two protons in the first step. In differential pulse mode using Britton–Robinson buffer pH 2.0 as the supporting electrolyte, a linear dynamic range of 0.10–7.5 μM with a detection limit of 0.038 μM has been obtained. The method has been applied for the analysis of infusions and decoctions of tannin-containing medicinal plants and compared to the spectrophotometric method. A positive correlation has been observed with ferric reducing power reflecting the total content of phenolic compounds in the sample.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	chemically modified electrodes	ru_RU
dc.subject	carbon nanotubes	ru_RU
dc.subject	phenolic antioxidants	ru_RU
dc.subject	tannic acid	ru_RU
dc.subject	medicinal plants	ru_RU
dc.subject	phytoanalysis	ru_RU
dc.title	Voltammetric Determination of Tannic Acid in Medicinal Plants Using Multi-Walled Carbon Nanotube-Modified Electrode	ru_RU
dc.type	Articles in international journals and collections	ru_RU