Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant

The aim of this research was to fabricate a nanofiber-modified pencil-graphite electrode using electro-spinning technique to application in the food simulant especially liquid foods, including dairy, juices and other liquid foods to detect the Zearalenone (ZEN) mycotoxin. This sensor was made at roo...

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Main Authors: Sara Moradi, Maryam Azizi-Lalabadi, Vahid Bagheri, Ehsan Sadeghi
Format: Article
Language:English
Published: Elsevier 2020-06-01
Series:Sensing and Bio-Sensing Research
Online Access:http://www.sciencedirect.com/science/article/pii/S221418041930203X
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spelling doaj-415491e400af443caf18c1893044de9d2020-11-25T03:49:29ZengElsevierSensing and Bio-Sensing Research2214-18042020-06-0128Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulantSara Moradi0Maryam Azizi-Lalabadi1Vahid Bagheri2Ehsan Sadeghi3Department of Chemical Engineering- Food Sciences, Kermanshah Science and Research Branch, Islamic Azad University, Kermanshah, IranResearch Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, IranDepartment of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P.O. BOX 51666-16471, Tabriz, IranResearch Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran; Corresponding author.The aim of this research was to fabricate a nanofiber-modified pencil-graphite electrode using electro-spinning technique to application in the food simulant especially liquid foods, including dairy, juices and other liquid foods to detect the Zearalenone (ZEN) mycotoxin. This sensor was made at room temperature by Britton–Robinson (B- R) buffer with pH =6 to optimize the chemical and mechanical parameters. Cyclic voltammetry (CV), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV) were used for electrochemical and morphological characterization of the composite fibers. This sensor responded to ZEN over the concentration range of 5–30 and 60–100 nm with a linear behavior. According to the SEM images, bare graphite electrode, has a fairly unusable smooth surface. ZEN cathode peak is dependent on the pH changes related to the proton receptor groups on the structure of ZEN and the best signal for the square wave spectrum in the B-R buffer based on the maximum signal of the received stream was pH = 6 for ZEN. Based on the results 0.5 M of potassium nitrate as a supporter electrolyte was suitable to measure ZEN in the presence of the optimal electrode. Therefor electrospun sensor doped into PAN/nanofiber has a good characteristic in recognisation of ZEN in the liquid foods especially dairy product. Keywords: Biosensor, Zearalenone, Mycotoxins, Graphite, Modified electrodehttp://www.sciencedirect.com/science/article/pii/S221418041930203X
collection DOAJ
language English
format Article
sources DOAJ
author Sara Moradi
Maryam Azizi-Lalabadi
Vahid Bagheri
Ehsan Sadeghi
spellingShingle Sara Moradi
Maryam Azizi-Lalabadi
Vahid Bagheri
Ehsan Sadeghi
Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
Sensing and Bio-Sensing Research
author_facet Sara Moradi
Maryam Azizi-Lalabadi
Vahid Bagheri
Ehsan Sadeghi
author_sort Sara Moradi
title Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
title_short Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
title_full Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
title_fullStr Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
title_full_unstemmed Fabrication of electrospun sensor based on a synthesized component doped into PAN (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
title_sort fabrication of electrospun sensor based on a synthesized component doped into pan (polyacrylonitrile) nanofibers for electrochemical detection of zearalenone mycotoxin in foods simulant
publisher Elsevier
series Sensing and Bio-Sensing Research
issn 2214-1804
publishDate 2020-06-01
description The aim of this research was to fabricate a nanofiber-modified pencil-graphite electrode using electro-spinning technique to application in the food simulant especially liquid foods, including dairy, juices and other liquid foods to detect the Zearalenone (ZEN) mycotoxin. This sensor was made at room temperature by Britton–Robinson (B- R) buffer with pH =6 to optimize the chemical and mechanical parameters. Cyclic voltammetry (CV), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV) were used for electrochemical and morphological characterization of the composite fibers. This sensor responded to ZEN over the concentration range of 5–30 and 60–100 nm with a linear behavior. According to the SEM images, bare graphite electrode, has a fairly unusable smooth surface. ZEN cathode peak is dependent on the pH changes related to the proton receptor groups on the structure of ZEN and the best signal for the square wave spectrum in the B-R buffer based on the maximum signal of the received stream was pH = 6 for ZEN. Based on the results 0.5 M of potassium nitrate as a supporter electrolyte was suitable to measure ZEN in the presence of the optimal electrode. Therefor electrospun sensor doped into PAN/nanofiber has a good characteristic in recognisation of ZEN in the liquid foods especially dairy product. Keywords: Biosensor, Zearalenone, Mycotoxins, Graphite, Modified electrode
url http://www.sciencedirect.com/science/article/pii/S221418041930203X
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