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Special Issue "Recent Advances of Bioanalytical Electrochemistry of Molecules"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Electrochemistry".

Deadline for manuscript submissions: 31 October 2019

Special Issue Editor

Guest Editor
Assoc. Prof. Dr. Ondrej Zitka

Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic
Website | E-Mail
Interests: biochemistry; bioanalytical chemistry; electrochemistry; biosensors and nanotechnology; materials science

Special Issue Information

Dear Colleagues,

The miniaturisation accompanying the revolution of all aspects of information technologies including worldwide digitalization have been influencing analytical chemistry. The time when mobile-phone producers will incorporate sensing and biosensing devices at great scale is coming, and would enable the analysis of numerous phenomena including vital signs, stress factors and even polluted environments.

Nowadays, electrochemical sensors and/or biosensors are able to detect nucleic acids, amino acids, proteins, carbohydrates, lipids, and various metabolites or food/environmental threats such as organic pollutants, metals and/or bio-pollutants, and the attractiveness of these methods and devices lies in their low cost, ease of use and in situ measurements. These devices also enable us to avoid laborious and time consuming sample preparation and provide an opportunity to perform real-time measurements.

We warmly invite you to contribute to this Special Issue with original research articles related to the use of electrochemistry and/or hyphenated electrochemical systems coupled with other detection methods in the form of sensing or biosensing devices for the detection/determination of ions or molecules serving as biomedical, environmental or food quality markers.

Assoc. Prof. Dr. Ondrej Zitka
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electrochemistry
  • Miniaturisation
  • Catalytic signals
  • Catalytic transducers
  • Sensing and biosensing
  • Increasing selectivity
  • Markers
  • On-site use

Published Papers (2 papers)

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Research

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Open AccessArticle
Electrochemical Evaluation of Selenium (IV) Removal from Its Aqueous Solutions by Unmodified and Modified Graphene Oxide
Molecules 2019, 24(6), 1063; https://doi.org/10.3390/molecules24061063
Received: 8 February 2019 / Revised: 8 March 2019 / Accepted: 13 March 2019 / Published: 18 March 2019
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Abstract
The removal of selenium from superficial and waste water is a worldwide problem. The maximum limit according to the World Health Organization (WHO) for the selenium in the water is set at a concentration of 10 μg/L. Carbon based adsorbents have attracted much [...] Read more.
The removal of selenium from superficial and waste water is a worldwide problem. The maximum limit according to the World Health Organization (WHO) for the selenium in the water is set at a concentration of 10 μg/L. Carbon based adsorbents have attracted much attention and recently demonstrated promising performance in removal of selenium. In this work, several materials (iron oxide based microparticles and graphene oxides materials) and their composites were prepared to remove Se(IV) from water. The graphene oxides were prepared according to the simplified Hummer’s method. In addition, the effect of pH, contact time and initial Se(IV) concentration was tested. An electrochemical method such as the differential pulse cathodic stripping voltammetry was used to determine the residual selenium concentration. From the experimental data, Langmuir adsorption model was used to calculate the maximum adsorption capacity. Graphene oxide particles modified by iron oxide based microparticles was the most promising material for the removal of Se(IV) from its aqueous solution at pH 2.0. Its adsorption efficiency reached more than 90% for a solution with given Se(IV) concentration, meanwhile its maximal recorded adsorption capacity was 18.69 mg/g. Full article
(This article belongs to the Special Issue Recent Advances of Bioanalytical Electrochemistry of Molecules)
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Review

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Open AccessReview
Biosensors and Bioassays Based on Lipases, Principles and Applications, a Review
Molecules 2019, 24(3), 616; https://doi.org/10.3390/molecules24030616
Received: 27 January 2019 / Revised: 6 February 2019 / Accepted: 8 February 2019 / Published: 10 February 2019
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Abstract
Lipases are enzymes responsible for the conversion of triglycerides and other esterified substrates, they are involved in the basic metabolism of a wide number of organisms, from a simple microorganism and to mammals. They also have broad applicability in many fields from which [...] Read more.
Lipases are enzymes responsible for the conversion of triglycerides and other esterified substrates, they are involved in the basic metabolism of a wide number of organisms, from a simple microorganism and to mammals. They also have broad applicability in many fields from which industrial biotechnology, the production of cleaning agents, and pharmacy are the most important. The use of lipases in analytical chemistry where it can serve as a part of biosensors or bioassays is an application of growing interest and has become another important use. This review is focused on the description of lipases chemistry, their current applications and the methods for their assay measurement. Examples of bioassays and biosensors, including their physical and chemical principles, performance for specific substrates, and discussion of their relevance, are given in this work. Full article
(This article belongs to the Special Issue Recent Advances of Bioanalytical Electrochemistry of Molecules)
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