Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell

Quality control of deep-frying oil is a global public health concern. A simple and economic electrochemical chamber composed of two bare screen-printed carbon electrodes (working area: 78.54 × 10<sup>2</sup> cm<sup>2</sup>; distance: 0.0055 cm; cell constant: 0.70 × 10<sup...

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Autores principales:	Yi Kung, Bo-Chuan Hsieh
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cell constant screen-printed carbon electrode total polar compounds acid value viscosity Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/73111a12e0194bf78b19c55cc4579951
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spelling	oai:doaj.org-article:73111a12e0194bf78b19c55cc45799512021-11-11T19:06:24ZQuality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell10.3390/s212170931424-8220https://doaj.org/article/73111a12e0194bf78b19c55cc45799512021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7093https://doaj.org/toc/1424-8220Quality control of deep-frying oil is a global public health concern. A simple and economic electrochemical chamber composed of two bare screen-printed carbon electrodes (working area: 78.54 × 10<sup>2</sup> cm<sup>2</sup>; distance: 0.0055 cm; cell constant: 0.70 × 10<sup>−2</sup> cm<sup>−1</sup>) was constructed for precisely acquiring the impedimetric responses of a high-resistance palm oil sample (RSD < 7%, <i>n</i> = 3). Good correlations between the measured impedance data (charge transfer resistance and logarithmic output impedance (Log Z) obtained in the frequency region <0.1 Hz) and the regulatory quality indicators (total polar compounds and acid value) were achieved (<i>R</i><sup>2</sup> > 0.97), suggesting that the proposed impedimetric sensing method is useful for accurately assessing the deteriorated condition of repeated frying oil. Applications for rapid screening can also be realized because the measurement times of Log Z at any given perturbation frequency from 0.01–1 Hz were all less than 3 min.Yi KungBo-Chuan HsiehMDPI AGarticlecell constantscreen-printed carbon electrodetotal polar compoundsacid valueviscosityChemical technologyTP1-1185ENSensors, Vol 21, Iss 7093, p 7093 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cell constant screen-printed carbon electrode total polar compounds acid value viscosity Chemical technology TP1-1185
spellingShingle	cell constant screen-printed carbon electrode total polar compounds acid value viscosity Chemical technology TP1-1185 Yi Kung Bo-Chuan Hsieh Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
description	Quality control of deep-frying oil is a global public health concern. A simple and economic electrochemical chamber composed of two bare screen-printed carbon electrodes (working area: 78.54 × 10<sup>2</sup> cm<sup>2</sup>; distance: 0.0055 cm; cell constant: 0.70 × 10<sup>−2</sup> cm<sup>−1</sup>) was constructed for precisely acquiring the impedimetric responses of a high-resistance palm oil sample (RSD < 7%, <i>n</i> = 3). Good correlations between the measured impedance data (charge transfer resistance and logarithmic output impedance (Log Z) obtained in the frequency region <0.1 Hz) and the regulatory quality indicators (total polar compounds and acid value) were achieved (<i>R</i><sup>2</sup> > 0.97), suggesting that the proposed impedimetric sensing method is useful for accurately assessing the deteriorated condition of repeated frying oil. Applications for rapid screening can also be realized because the measurement times of Log Z at any given perturbation frequency from 0.01–1 Hz were all less than 3 min.
format	article
author	Yi Kung Bo-Chuan Hsieh
author_facet	Yi Kung Bo-Chuan Hsieh
author_sort	Yi Kung
title	Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
title_short	Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
title_full	Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
title_fullStr	Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
title_full_unstemmed	Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell
title_sort	quality assessment of deep-frying palm oil by impedimetric sensing with a simple and economic electrochemical cell
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/73111a12e0194bf78b19c55cc4579951
work_keys_str_mv	AT yikung qualityassessmentofdeepfryingpalmoilbyimpedimetricsensingwithasimpleandeconomicelectrochemicalcell AT bochuanhsieh qualityassessmentofdeepfryingpalmoilbyimpedimetricsensingwithasimpleandeconomicelectrochemicalcell
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Quality Assessment of Deep-Frying Palm Oil by Impedimetric Sensing with a Simple and Economic Electrochemical Cell

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