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A promising enzyme anchoring probe for selective ethanol sensing in beverages
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Date
2019-07-15
Author
Soylemez, Saniye
Goker, Seza
Toppare, Levent Kamil
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A newly designed amperometric biosensor for the determination of ethanol through one-step electrochemical coating of (4,7-di(thiophen-2-yl)benzo[c][1,2,5]selenadiazole-co-1H-pyrrole-3-carboxylic acid) (TBeSe-co-P3CA) on a graphite electrode is presented. It was aimed to propose a newly synthesized copolymer with enhanced biosensing properties as a novel sensor for the quantification of ethanol. The conjugated copolymer (TBeSe-co-P3CA) was prepared through electrochemical polymerization by potential cycling. After polymer modification, alcohol oxidase (AOx) was immobilized on a modified electrode surface for ethanol sensing. In the analytical investigation, the calibration plot is linear above large concentration range (0.085 to 1.7 mM), where sensitivity is around 16.44 mu A/mMcm(2) with a very low detection limit (LOD) of 0.052 mM based on the signal-to-noise ratio in short response time. Moreover, interfering effect of some possible compounds were examined and the capability of the biosensor in estimating ethanol content in commercial alcoholic beverages was also demonstrated. The results showed satisfactory accuracy of the developed sensor and confirm the proposed sensor has a potential for ethanol quantification compared to the currently used techniques. (C) 2019 Published by Elsevier B.V.
Subject Keywords
Biochemistry
,
Molecular Biology
,
Structural Biology
,
General Medicine
URI
https://hdl.handle.net/11511/35533
Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
DOI
https://doi.org/10.1016/j.ijbiomac.2019.05.001
Collections
Department of Chemistry, Article
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BibTeX
S. Soylemez, S. Goker, and L. K. Toppare, “A promising enzyme anchoring probe for selective ethanol sensing in beverages,”
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
, vol. 133, pp. 1228–1235, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35533.