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      Recent Advances in (Bio)Chemical Sensors for Food Safety and Quality Based on Silver Nanomaterials

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          SUMMARY

          There is a continuing need for tools and devices which can simplify, quicken and reduce the cost of analyses of food safety and quality. Chemical sensors and biosensors are increasingly being developed for this purpose, reaping from the opportunities provided by nanotechnology. Due to the distinct electrical and optical properties of silver nanoparticles (AgNPs), this material plays a vital role in (bio)sensor development. This review is an analysis of chemical sensors and biosensors based on silver nanoparticles with application in food and beverage matrices. It consists of academic research published from 2015 to 2020. The paper is structured to separately explore the designs of two major (bio)sensor classes: electrochemical (including voltammetric and impedimetric sensors) and optical sensors (including colourimetric and luminescent), with special focus on the type of silver nanomaterial and its role in the sensor system. The review indicates that diverse nanosensors have been developed, capable of detecting analytes such as pesticides, mycotoxins, fertilisers, microorganisms, heavy metals, and various additives with exceptional analytical performance. Current trends in the design of such sensors are highlighted and challenges which need to be overcome in the future are discussed.

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          Silver nanoparticles as an effective disinfectant: A review

          S.P. Deshmukh, S.M. Patil, S.B. Mullani … (2018)
          The paradigm modifications in the metallic crystals from bulky to micro-size to nano-scale have resulted in excellent and amazing properties; which have been the remarkable interests in a wider range of applications. Particularly, Ag NPs have much attention owing to their distinctive optical, chemical, electrical and catalytic properties that can be tuned with surface nature, size, shapes, etc. and hence these crystals have been used in various fields such as catalysis, sensor, electronic components, antimicrobial agents in the health industry etc. Among them, Ag NPs based disinfectants have paid attention due to the practical applications in our daily life. Therefore the Ag NPs have been used in different sectors such as silver-based air/water filters, textile, animal husbandry, biomedical and food packaging etc. In this review, the Ag NPs as a disinfectant in different sectors have been included in detail.
          Article 0 comments Cited 192 times – based on 0 reviews     Review now
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            Electrochemical biosensors: recommended definitions and classification.

            Christopher R. Durst, Ian Toth, D. Thevenot … (2000)
            Two Divisions of the International Union of Pure and Applied Chemistry (IUPAC), namely Physical Chemistry (Commission 1.7 on Biophysical Chemistry formerly Steering Committee on Biophysical Chemistry) and Analytical Chemistry (Commission V.5 on Electroanalytical Chemistry) have prepared recommendations on the definition, classification and nomenclature related to electrochemical biosensors: these recommendations could, in the future, be extended to other types of biosensors. An electrochemical biosensor is a self-contained integrated device, which is capable of providing specific quantitative or semi-quantitative analytical information using a biological recognition element (biochemical receptor) which is retained in direct spatial contact with an electrochemical transduction element. Because of their ability to be repeatedly calibrated, we recommend that a biosensor should be clearly distinguished from a bioanalytical system, which requires additional processing steps, such as reagent addition. A device that is both disposable after one measurement, i.e. single use, and unable to monitor the analyte concentration continuously or after rapid and reproducible regeneration, should be designated a single use biosensor. Biosensors may be classified according to the biological specificity-conferring mechanism or, alternatively, to the mode of physico-chemical signal transduction. The biological recognition element may be based on a chemical reaction catalysed by, or on an equilibrium reaction with macromolecules that have been isolated, engineered or present in their original biological environment. In the latter cases. equilibrium is generally reached and there is no further, if any, net consumption of analyte(s) by the immobilized biocomplexing agent incorporated into the sensor. Biosensors may be further classified according to the analytes or reactions that they monitor: direct monitoring of analyte concentration or of reactions producing or consuming such analytes; alternatively, an indirect monitoring of inhibitor or activator of the biological recognition element (biochemical receptor) may be achieved. A rapid proliferation of biosensors and their diversity has led to a lack of rigour in defining their performance criteria. Although each biosensor can only truly be evaluated for a particular application, it is still useful to examine how standard protocols for performance criteria may be defined in accordance with standard IUPAC protocols or definitions. These criteria are recommended for authors. referees and educators and include calibration characteristics (sensitivity, operational and linear concentration range, detection and quantitative determination limits), selectivity, steady-state and transient response times, sample throughput, reproducibility, stability and lifetime.
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              Chemical sensors: definitions and classification

              A Hulanicki, S. Glab, F Ingman (1991)
              Article 0 comments Cited 97 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Food Technol Biotechnol
                Journal ID (iso-abbrev): Food Technol Biotechnol
                Journal ID (publisher-id): FTB
                Title: Food Technology and Biotechnology
                Publisher: University of Zagreb Faculty of Food Technology and Biotechnology
                ISSN (Print): 1330-9862
                ISSN (Electronic): 1334-2606
                Publication date (Print and electronic): June 2021
                Publication date (Print): June 2021
                Volume: 59
                Issue: 2
                Pages: 216-237
                Affiliations
                [1]deptFaculty of Chemical Engineering and Technology , University of Zagreb , Marulićev trg 19, 10000 Zagreb, Croatia
                Author notes
                [* ]Corresponding author: Phone: +38514597291, E-mail: pkassal@ 123456fkit.hr
                Author information
                https://orcid.org/0000-0001-5616-6315
                https://orcid.org/0000-0002-0095-8441
                https://orcid.org/0000-0001-7904-6439
                Article
                Publisher ID: FTB-59-216
                DOI: 10.17113/ftb.59.02.21.6912
                PMC ID: 8284108
                PubMed ID: 34316283
                SO-VID: f608a395-a632-489f-acd5-94abe727f9ce
                Copyright statement: Copyright @ 2021
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY) 4.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 24 July 2020
                Date accepted : 28 May 2021
                Categories
                Subject: Review

                Keywords: silver nanoparticles,nanosensors,chemical sensors,biosensors,food safety,food quality
                Data availability:
                Keywords: silver nanoparticles, nanosensors, chemical sensors, biosensors, food safety, food quality

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