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Sensors 2013, 13(12), 16234-16244; doi:10.3390/s131216234

Electrochemical Determination of Glycoalkaloids Using a Carbon Nanotubes-Phenylboronic Acid Modified Glassy Carbon Electrode

1 College of Horticulture and Landscape, Hunan Agriculture University, Changsha 410128, China 2 The Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
* Author to whom correspondence should be addressed.
Received: 5 October 2013 / Revised: 12 November 2013 / Accepted: 18 November 2013 / Published: 27 November 2013
(This article belongs to the Special Issue Inorganic-Organic Hybrid Biological and Chemical Sensors)
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A versatile strategy for electrochemical determination of glycoalkaloids (GAs) was developed by using a carbon nanotubes-phenylboronic acid (CNTs-PBA) modified glassy carbon electrode. PBA reacts with α-solanine and α-chaconine to form a cyclic ester, which could be utilized to detect GAs. This method allowed GA detection from 1 μM to 28 μM and the detection limit was 0.3 μM. Affinity interaction of GAs and immobilized PBA caused an essential change of the peak current. The CNT-PBA modified electrodes were sensitive for detection of GAs, and the peak current values were in quite good agreement with those measured by the sensors.
Keywords: carbon nanotubes; phenylboronic acid; glycoalkaloids; sensor carbon nanotubes; phenylboronic acid; glycoalkaloids; sensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Wang, H.; Liu, M.; Hu, X.; Li, M.; Xiong, X. Electrochemical Determination of Glycoalkaloids Using a Carbon Nanotubes-Phenylboronic Acid Modified Glassy Carbon Electrode. Sensors 2013, 13, 16234-16244.

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