An Enantioselective Voltammetric Sensor System Based on Glassy Carbon Electrodes Modified by Polyarylenephthalide Composites with α-, β-, and γ-Cyclodextrins for Recognizing D- and L-Tryptophans
- Authors: Zil’berg R.A.1, Maistrenko V.N.1, Yarkaeva Y.A.1, Dubrovskii D.I.1
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Affiliations:
- Department of Chemistry, Bashkir State University
- Issue: Vol 74, No 12 (2019)
- Pages: 1245-1255
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183357
- DOI: https://doi.org/10.1134/S1061934819110133
- ID: 183357
Cite item
Abstract
We developed an enantioselective voltammetric sensor system based on glassy carbon electrodes modified by polyarylenephthalide composites with α-, β-, and γ-cyclodextrins for the selective recognition and determination of tryptophan (Trp) enantiomers. The electrochemical characteristics of the electrodes and surface morphology were studied by cyclic voltammetry, electrochemical impedance spectroscopy, and atomic force microscopy. The proposed sensor system with recording voltammograms by three electrodes and the chemometric processing of the data using principal component analysis and projections to latent structures discriminant analysis was used to recognize tryptophan enantiomers in food additives and to determine their manufacturer.
About the authors
R. A. Zil’berg
Department of Chemistry, Bashkir State University
Author for correspondence.
Email: ZilbergRA@yandex.ru
Russian Federation, Ufa, Bashkortostan, 450076
V. N. Maistrenko
Department of Chemistry, Bashkir State University
Email: ZilbergRA@yandex.ru
Russian Federation, Ufa, Bashkortostan, 450076
Yu. A. Yarkaeva
Department of Chemistry, Bashkir State University
Email: ZilbergRA@yandex.ru
Russian Federation, Ufa, Bashkortostan, 450076
D. I. Dubrovskii
Department of Chemistry, Bashkir State University
Email: ZilbergRA@yandex.ru
Russian Federation, Ufa, Bashkortostan, 450076