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Electrochemical Sensors and Biosensors for Environmental, Health, and Food Safety...
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Electrochemical Sensors and Biosensors for Environmental, Health, and Food Safety Applications (Volume II)

A special issue of Biosensors (ISSN 2079-6374). This special issue belongs to the section "Environmental Biosensors and Biosensing".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 3866

Special Issue Editors

Prof. Dr. Stelian Lupu

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Guest Editor
Department of Analytical Chemistry and Environmental Engineering, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica of Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania
Interests: electrochemical sensors and biosensors; instrumental analysis; electroanalysis; analytical chemistry; environmental analysis; modified electrodes; microelectrodes; conducting polymers; metal nanoparticles; nanocomposite materials
Special Issues, Collections and Topics in MDPI journals
Dr. Cecilia Lete

E-Mail Website
Guest Editor
Electrochemistry-Corrosion Department, Institute of Physical Chemistry “Ilie Murgulescu” of the Romanian Academy, 202 Splaiul Independentei, 022328 Bucharest, Romania
Interests: electrochemical sensors and biosensors; modified electrodes; conducting polymers; electroanalysis of organic and inorganic pollutants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The application of electrochemical (bio)sensors in the quantification of relevant analytes in environmental, health and food safety fields is a research topic of growing interest. Electrochemical sensors based on tailored nanocomposite sensing materials, as well as electrochemical biosensors containing biologic recognition elements such as enzyme, nucleic acids and engineered biomolecules, have been established nowadays as powerful analytical devices enabling fast, reliable, low-cost and sensitive analytical measurements. Direct analytical measurements requiring no or only minor sample treatments have ensured the development of electrochemical (bio)sensors for the determination of emergent pollutants, inorganic and organic pollutants, endocrine disruptors, neurotransmitters, antioxidants, pharmaceutical contaminants, toxins, biohazard compounds and biomarkers in samples related to environmental, food and health applications.

This Special Issue aims to present the recent developments and applications of electrochemical (bio)sensors in environmental quality, health and food safety monitoring, including, but not limited to, various topics related to new detection analytical strategies, miniaturization and microfabrication of portable sensors, tailored (bio)recognition elements, in vivo detection, onsite monitoring, and remote sensing. Contributions in the form of reviews and research papers dealing with the latest developments of electrochemical (bio)sensors and their analytical applications in the sensing of relevant analytes in environmental, biomedical and agri-food samples are welcome.

Prof. Dr. Stelian Lupu
Dr. Cecilia Lete
Guest Editors

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 submissions that pass pre-check are 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. Biosensors is an international peer-reviewed open access monthly 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 2700 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

  • electrochemical sensors and biosensors
  • miniaturization and fabrication
  • environmental monitoring
  • organic and inorganic pollutants
  • antioxidants
  • neurotransmitters
  • toxins
  • pharmaceutical contaminants
  • food safety
  • in vivo detection
  • biomarkers

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Published Papers (2 papers)

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17 pages, 9826 KiB  
Article
MeNPs-PEDOT Composite-Based Detection Platforms for Epinephrine and Quercetin
by Sorina Alexandra Leau, Mariana Marin, Ana Maria Toader, Mihai Anastasescu, Cristian Matei, Cecilia Lete and Stelian Lupu
Biosensors 2024, 14(7), 320; https://doi.org/10.3390/bios14070320 - 25 Jun 2024
Cited by 1 | Viewed by 1756
Abstract
The development of low-cost, sensitive, and simple analytical tools for biomolecule detection in health status monitoring is nowadays a growing research topic. Sensing platforms integrating nanocomposite materials as recognition elements in the monitoring of various biomolecules and biomarkers are addressing this challenging objective. [...] Read more.
The development of low-cost, sensitive, and simple analytical tools for biomolecule detection in health status monitoring is nowadays a growing research topic. Sensing platforms integrating nanocomposite materials as recognition elements in the monitoring of various biomolecules and biomarkers are addressing this challenging objective. Herein, we have developed electrochemical sensing platforms by means of a novel fabrication procedure for biomolecule detection. The platforms are based on commercially available low-cost conductive substrates like glassy carbon and/or screen-printed carbon electrodes selectively functionalized with nanocomposite materials composed of Ag and Au metallic nanoparticles and an organic polymer, poly(3,4-ethylenedioxythiophene). The novel fabrication method made use of alternating currents with controlled amplitude and frequency. The frequency of the applied alternating current was 100 mHz for the polymer deposition, while a frequency value of 50 mHz was used for the in situ electrodeposition of Ag and Au nanoparticles. The selected frequency values ensured the successful preparation of the composite materials. The use of readily available composite materials is intended to produce cost-effective analytical tools. The judicious modification of the organic conductive matrix by various metallic nanoparticles, such as Ag and Au, extends the potential applications of the sensing platform toward a range of biomolecules like quercetin and epinephrine, chosen as benchmark analytes for proof-of-concept antioxidant and neurotransmitter detection. The sensing platforms were tested successfully for quercetin and epinephrine determination on synthetic and real samples. Wide linear response ranges and low limit-of-detection values were obtained for epinephrine and quercetin detection. Full article
(This article belongs to the Special Issue Electrochemical Sensors and Biosensors for Environmental, Health, and Food Safety Applications (Volume II))
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18 pages, 7513 KiB  
Article
Fabrication of Curcumin-Based Electrochemical Nanosensors for the Detection of Environmental Pollutants: 1,4-Dioxane and Hydrazine
by Renjith Kumar Rasal, Iffath Badsha, Muthaiah Shellaiah, Kumaran Subramanian, Abinaya Gayathri, Abdurahman Hajinur Hirad, Kumaravel Kaliaperumal and Thiyagarajan Devasena
Biosensors 2024, 14(6), 291; https://doi.org/10.3390/bios14060291 - 4 Jun 2024
Cited by 13 | Viewed by 1632
Abstract
This work reports the development of novel curcuminoid-based electrochemical sensors for the detection of environmental pollutants from water. In this study, the first set of electrochemical experiments was carried out using curcumin-conjugated multi-walled carbon nanotubes (MWCNT–CM) for 1,4-dioxane detection. The MWCNT–CM/GCE showed good [...] Read more.
This work reports the development of novel curcuminoid-based electrochemical sensors for the detection of environmental pollutants from water. In this study, the first set of electrochemical experiments was carried out using curcumin-conjugated multi-walled carbon nanotubes (MWCNT–CM) for 1,4-dioxane detection. The MWCNT–CM/GCE showed good sensitivity (103.25 nA nM−1 cm−2 in the linear range 1 nM to 1 µM), with LOD of 35.71 pM and LOQ of 108.21 pM. The second set of electrochemical experiments was carried out with bisdemethoxy curcumin analog quantum dots (BDMCAQD) for hydrazine detection. The BDMCAQD/GCE exhibited good sensitivity (74.96 nA nM−1 cm−2 in the linear range 100 nM to 1 µM), with LOD of 10 nM and LOQ of 44.93 nM. Thus, this work will serve as a reference for the fabrication of metal-free electrochemical sensors using curcuminoids as the redox mediator for the enhanced detection of environmental pollutants. Full article
(This article belongs to the Special Issue Electrochemical Sensors and Biosensors for Environmental, Health, and Food Safety Applications (Volume II))
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