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Applied Sciences
Special Issues
Applied Nanosensors for Food Toxicants and Environmental Pollutants
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Applied Nanosensors for Food Toxicants and Environmental Pollutants

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (30 June 2019) | Viewed by 11527

Special Issue Editors

Prof. Dr. Dimitrios P. Nikolelis

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Guest Editor
Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece
Interests: biosensors; analytical and environmental chemistry; nanotechnology
Special Issues, Collections and Topics in MDPI journals
Dr. Christina Siontorou

E-Mail Website
Guest Editor
Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Piraeus, Greece
Interests: nanosensors; biomonitoring networks; multi-array sensors; clinical diagnostics; sensor standardization; fault diagnostics (online/offline); environmental management; knowledge management; technology trajectories
Special Issues, Collections and Topics in MDPI journals
Dr. Georgia-Paraskevi Nikoleli

E-Mail Website
Guest Editor
Laboratory of Inorganic & Analytical Chemistry, Department of Chemical Sciences, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
Interests: analytical chemistry; nanotechnology; chemical sensors; food analysis and safety; environmental monitoring; bioanalysis; biochemical processes; biomembranes; artificial and natural receptors; lipid film-based sensors; insecticides; pesticides; doping materials; toxins; toxicants; pathogens; antibodies; enzymes; analysis of fruits and vegetables; analysis of dairy products; gas pollutants; atmospheric chemistry; differential scanning calorimetry; electroanalysis; IR and Raman spectroscopy; new materials; scanning electron microscopy; electron scanning microscopy; TEM; technological sciences; physical sciences
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Toxins in the food chain remain a threatening issue for public health. The use of simple, fast, reliable and cost-effective detectors for real time and preferably in the field or on line analyses of raw or processed food becomes indispensable. Further, public and ecosystem health may be seriously damaged by a variety of environmental pollutants, both organic and inorganic, having short-, medium- or long-term effects that are currently cannot be adequately monitored in the environment. The main reasons lie in the inability to monitor the fate of pollutants entering any given ecosystem as well as in technological constraints on both, field instrumentation and trace detection. Nanobiosensors have thus far presented an incredible potential tool for rapid identification and detection of a variety of food toxicants, environmental pollutants and pollution degradation products, utilizing a wide range of detection methodologies and transduction strategies. Multiplex analyses might become a reality in the near future utilizing small-sized, hand-held detectors with increased reliability of measurements. This Special Issue wishes to host such potential and present novel nano-based biosensors that are suitable for food and environmental analysis. Emphasis will be given in sensor construction, analytical development, implementation in real samples and operation conditions, material design and engineering. Given the complex nature of the samples, papers on modeling and uncertainty of measurements are also welcomed.

Prof. Dr. Dimitros P. Nikolelis
Dr. Christina Siontorou
Dr. Georgia-Paraskevi Nikoleli
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. Applied Sciences 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 2400 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

  • biosensor
  • nanotechnology
  • real time monitoring
  • in field detection
  • food toxicants
  • pollutants monitoring

Published Papers (3 papers)

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Research

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11 pages, 26804 KiB  
Article
Morphology-Controlled Versatile One-Pot Synthesis of Hydrophobic Gold Nanodots, Nanobars, Nanorods, and Nanowires and Their Applications in Surface-Enhanced Raman Spectroscopy
by Jing Neng, Chen Xiang, Kan Jia, Xiaohua Nie and Peilong Sun
Appl. Sci. 2019, 9(5), 935; https://0-doi-org.brum.beds.ac.uk/10.3390/app9050935 - 06 Mar 2019
Cited by 5 | Viewed by 3151
Abstract
Many previously reported syntheses of gold nanoparticles required lengthy reaction times, complicated operations, high temperatures, or multi-step manipulations. In this work, a morphology-controlled versatile one-pot synthesis of hydrophobic gold nanodots, nanobars, nanorods, and nanowires has been developed. A series of gold nanomaterials ranging [...] Read more.
Many previously reported syntheses of gold nanoparticles required lengthy reaction times, complicated operations, high temperatures, or multi-step manipulations. In this work, a morphology-controlled versatile one-pot synthesis of hydrophobic gold nanodots, nanobars, nanorods, and nanowires has been developed. A series of gold nanomaterials ranging from round nanodots, short nanobars, and long nanorods to ultrathin and ultralong nanowires (diameter <2 nm, length >2 μm) have been readily prepared by simply adjusting the feeding ratio of chloroauric acid to oleylamine, oleic acid, and triphenylsilane. The silk-like ultralong and ultrathin nanowires were found to have a single crystalline structure and may have significant potential applications in microelectronics and biosensors. Large sizes of gold spherical nanoparticles were obtained from gold nanodots via a seed-mediated growth approach. These nanoparticles and ultralong nanowires showed excellent surface-enhanced Raman scattering (SERS) activity in organic solvents and, therefore, were employed as efficient organic-soluble SERS substrates for the detection of hydrophobic food toxicants, such as 3,4-benzopyrene, and carcinogens, such as benzidine. Full article
(This article belongs to the Special Issue Applied Nanosensors for Food Toxicants and Environmental Pollutants)
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9 pages, 2833 KiB  
Article
Tyrosinase/Chitosan/Reduced Graphene Oxide Modified Screen-Printed Carbon Electrode for Sensitive and Interference-Free Detection of Dopamine
by Cheng-You Liu, Yi-Chieh Chou, Jui-Hsuan Tsai, Tzu-Ming Huang, Jian-Zhang Chen and Yi-Chun Yeh
Appl. Sci. 2019, 9(4), 622; https://0-doi-org.brum.beds.ac.uk/10.3390/app9040622 - 13 Feb 2019
Cited by 24 | Viewed by 4150
Abstract
Tyrosinase, chitosan, and reduced graphene oxide (rGO) are sequentially used to modify a screen-printed carbon electrode (SPCE) for the detection of dopamine (DA), without interference from uric acid (UA) or ascorbic acid (AA). The use of tyrosinase significantly improves the detection’s specificity. Cyclic [...] Read more.
Tyrosinase, chitosan, and reduced graphene oxide (rGO) are sequentially used to modify a screen-printed carbon electrode (SPCE) for the detection of dopamine (DA), without interference from uric acid (UA) or ascorbic acid (AA). The use of tyrosinase significantly improves the detection’s specificity. Cyclic voltammetry (CV) measurements demonstrate the high sensitivity and selectivity of the proposed electrochemical sensors, with detection limits of 22 nM and broad linear ranges of 0.4–8 μM and 40–500 μM. The fabricated tyrosinase/chitosan/rGO/SPCE electrodes achieve satisfactory results when applied to human urine samples, thereby demonstrating their feasibility for analyzing DA in physiological samples. Full article
(This article belongs to the Special Issue Applied Nanosensors for Food Toxicants and Environmental Pollutants)
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Review

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20 pages, 3938 KiB  
Review
Recent Lipid Membrane-Based Biosensing Platforms
by Georgia-Paraskevi Nikoleli, Christina G. Siontorou, Marianna-Thalia Nikolelis, Spyridoula Bratakou and Dimitrios K. Bendos
Appl. Sci. 2019, 9(9), 1745; https://0-doi-org.brum.beds.ac.uk/10.3390/app9091745 - 27 Apr 2019
Cited by 20 | Viewed by 3849
Abstract
The investigation of lipid films for the construction of biosensors has recently given the opportunity to manufacture devices to selectively detect a wide range of food toxicants, environmental pollutants, and compounds of clinical interest. Biosensor miniaturization using nanotechnological tools has provided novel routes [...] Read more.
The investigation of lipid films for the construction of biosensors has recently given the opportunity to manufacture devices to selectively detect a wide range of food toxicants, environmental pollutants, and compounds of clinical interest. Biosensor miniaturization using nanotechnological tools has provided novel routes to immobilize various “receptors” within the lipid film. This chapter reviews and exploits platforms in biosensors based on lipid membrane technology that are used in food, environmental, and clinical chemistry to detect various toxicants. Examples of applications are described with an emphasis on novel systems, new sensing techniques, and nanotechnology-based transduction schemes. The compounds that can be monitored are insecticides, pesticides, herbicides, metals, toxins, antibiotics, microorganisms, hormones, dioxins, etc. Full article
(This article belongs to the Special Issue Applied Nanosensors for Food Toxicants and Environmental Pollutants)
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