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. 2019 Nov 7;9:16273. doi: 10.1038/s41598-019-52685-6

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

An experimental set-up (a) real, and (b) schematic comprising a PC and electrodes (IDE, CE, RE) that were connected to the portable potentiostat. The active area of the IDE indicated by a red rectangle composed of two interdigitated electrodes with two connection tracks, all made of gold, on a glass substrate with bands/gaps at 5 µm with dimensions L 22.8 × W 7.6 × H 0.7 mm. The part of the active area was magnified under the microscope. The gold coated surface of the IDE fingers was modified with the aptamer/MCH complex at a ratio of 1/100. The detection was based on the binding event of the target MPT64 onto the aptamer modified electrode surface.