{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T04:37:12Z","timestamp":1772771832191,"version":"3.50.1"},"reference-count":44,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2019,12,5]],"date-time":"2019-12-05T00:00:00Z","timestamp":1575504000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51205245, 61573236, 51575333"],"award-info":[{"award-number":["51205245, 61573236, 51575333"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A portable capacitive sensor was designed to assess frying oil degradation by measuring the changes in electrical capacitance. An interdigital electrode (IDE) was designed to be implemented as the testing probe (as IDEs are resistive to parasitic capacitance), together with an adjacent capacitive chip Pcap01 and a further microprocessor STM32, which were used as the data-processing elements. Experimental results demonstrated that viscosity could be a useful frying oil quality indicator, and also proved a preliminary correlation between IDE capacitance and oils\u2019 total polar materials. This implies that IDE capacitance could be a suitable metric for conveniently assessing frying oil degradation. The designed capacitance sensor is light in weight, cost effective, and has excellent potential for simple, inexpensive, on-the-spot testing of the current quality of frying oil.<\/jats:p>","DOI":"10.3390\/s19245375","type":"journal-article","created":{"date-parts":[[2019,12,5]],"date-time":"2019-12-05T11:16:31Z","timestamp":1575544591000},"page":"5375","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Frying Oil Evaluation by a Portable Sensor Based on Dielectric Constant Measurement"],"prefix":"10.3390","volume":"19","author":[{"given":"Mei","family":"Liu","sequence":"first","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangzheng","family":"Qin","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhanghao","family":"Chen","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Tang","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brandon","family":"Borom","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"},{"name":"Department of Nutrition Science and Dietetics in the College of Agriculture, Biotechnology, and Natural Resources, University of Nevada, Reno, NV 89557, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ning","family":"Cao","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"Barnes","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai","family":"Cheng","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinbo","family":"Chen","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Wang","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinjun","family":"Rao","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, School of Mechatronic Engineering and Automation1, Shanghai University, Shanghai 200444, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,5]]},"reference":[{"key":"ref_1","first-page":"11","article-title":"Monitoring the quality of Frying Oil Blends by Different Physical Methods","volume":"16","author":"Rashed","year":"2019","journal-title":"Alex. J. Food Sci. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1007\/s11746-008-1328-5","article-title":"Degradation and Nutritional Quality Changes of Oil During Frying","volume":"86","author":"Aladedunye","year":"2009","journal-title":"J. Am. Oil Chem. Soc."},{"key":"ref_3","first-page":"295","article-title":"Effect of frying process on fatty acid composition and iodine value of selected vegetable oils and their blends","volume":"17","author":"Alireza","year":"2010","journal-title":"Int. Food Res. J."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1016\/j.foodchem.2009.12.076","article-title":"Evaluation of commercially available rapid test kits for the determination of oil quality in deep-frying operations","volume":"121","author":"Bansal","year":"2010","journal-title":"Food Chem."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1080\/10408390802544611","article-title":"Review of Rapid Tests Available for Measuring the Quality Changes in Frying Oils and Comparison with Standard Methods","volume":"50","author":"Bansal","year":"2010","journal-title":"Crit. Rev. Food Sci. Nutr."},{"key":"ref_6","first-page":"96","article-title":"Advance in quality detection of edible vegetable oil based on dielectric properties","volume":"42","author":"Chunhua","year":"2017","journal-title":"China Oils Fats"},{"key":"ref_7","first-page":"1918","article-title":"The application of dielectric constant in rapid test of total polar compounds in frying oils","volume":"5","author":"Li","year":"2014","journal-title":"Food Saf. Qual. Detect. Technol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1016\/j.foodcont.2012.01.008","article-title":"Study of the effectiveness of quick tests based on physical properties for the evaluation of used frying oil","volume":"26","author":"Osawa","year":"2012","journal-title":"Food Control"},{"key":"ref_9","first-page":"163","article-title":"Application of TESTO Rapid Testing Method on the Quality Monitoring of repeated Usage of Frying Oil","volume":"32","author":"Zhu","year":"2017","journal-title":"J. Chin. Cereals Oils Assoc."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"654","DOI":"10.1016\/j.foodchem.2008.02.057","article-title":"Some physical changes in Bajo Arag\u00f3n extra virgin olive oil during the frying process","volume":"110","author":"Negueruela","year":"2008","journal-title":"Food Chem."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"338","DOI":"10.1016\/j.foodchem.2009.12.034","article-title":"Performance of palm olein in repeated deep frying and controlled heating processes","volume":"121","author":"Bansal","year":"2017","journal-title":"Food Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.jfoodeng.2011.02.021","article-title":"Effect of repeated frying on the viscosity, density and dynamic interfacial tension of palm and olive oil","volume":"105","author":"Kalogianni","year":"2011","journal-title":"J. Food Eng."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"448","DOI":"10.1016\/j.foodchem.2008.05.101","article-title":"Suitability of contact angle measurement as an index of overall oil degradation and oil uptake during frying","volume":"112","author":"Rossi","year":"2009","journal-title":"Food Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1016\/j.jfoodeng.2004.05.007","article-title":"Effect of heating and cooling on rheological parameters of edible vegetable oils","volume":"67","author":"Santos","year":"2005","journal-title":"J. Food Eng."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1215","DOI":"10.1111\/ijfs.12752","article-title":"Development of a rapid method for the determination of frying oil quality based on capillary penetration","volume":"50","author":"Kalogianni","year":"2015","journal-title":"Int. J. Food Sci. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"260","DOI":"10.1016\/j.jfoodeng.2013.05.037","article-title":"Towards a wicking rapid test for rejection assessment of reused fried oils: Results and analysis for extra virgin olive oil","volume":"119","author":"Lioumbas","year":"2013","journal-title":"J. Food Eng."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"27970","DOI":"10.1038\/srep27970","article-title":"Microfluidic Assessment of Frying Oil Degradation","volume":"6","author":"Liu","year":"2016","journal-title":"Sci. Rep."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"946","DOI":"10.1111\/ijfs.13667","article-title":"Microfluidic evaluation of some edible oil quality based on viscosity and interfacial tensions","volume":"53","author":"Deng","year":"2017","journal-title":"Int. J. Food Sci. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"12286","DOI":"10.1021\/jf202740e","article-title":"Near-Infrared Spectroscopic Determination of Degradation in Vegetable Oils Used To Fry Various Foods","volume":"59","author":"Ng","year":"2011","journal-title":"J. Agric. Food Chem."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"756","DOI":"10.1002\/ejlt.201300270","article-title":"Application of FT-NIR spectroscopy in assessment of used frying fats and oils*","volume":"116","author":"Gertz","year":"2014","journal-title":"Eur. J. Lipid Sci. Technol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"255","DOI":"10.5650\/jos.ess14227","article-title":"Determination of Polar Components in Frying Oils by Fourier-Transform Near-Infrared Spectroscopy","volume":"64","author":"Chen","year":"2015","journal-title":"J. Oleo Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"657","DOI":"10.1016\/j.lwt.2004.02.006","article-title":"Rapid determination of polar compounds in frying fats and oils using image analysis","volume":"37","author":"Gil","year":"2004","journal-title":"Lebensm. Wiss. Technol."},{"key":"ref_23","first-page":"33","article-title":"Application of electronic nose to monitor the frying process. A preliminary study","volume":"LXXXIV","author":"Savarese","year":"2007","journal-title":"Riv. Ital. Delle Sostanze Grasse"},{"key":"ref_24","first-page":"124","article-title":"Application of Chemical Sensors to Study the Soybean Oils Prepared with Different Heating Temperature and Time","volume":"28","author":"Huang","year":"2013","journal-title":"J. Chin. Cereals Oils Assoc."},{"key":"ref_25","first-page":"236","article-title":"Fast Detection of Fried Oil Quality by Electronic Nose","volume":"34","author":"Jing","year":"2013","journal-title":"Food Sci."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1002\/ejlt.201400230","article-title":"Rapid quantification of polar compounds in thermo-oxidized oils by HPTLC-densitometry","volume":"117","author":"Correia","year":"2015","journal-title":"Eur. J. Lipid Sci. Technol."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"4531","DOI":"10.1021\/jf020230s","article-title":"Ultrasonic Assessment of Oil Quality during Frying","volume":"50","author":"Benedito","year":"2002","journal-title":"J. Agric. Food Chem."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"151","DOI":"10.3989\/gya.087709","article-title":"Evaluation of the performance of Frying Oils using an ultrasonic technique","volume":"61","author":"Izbaim","year":"2010","journal-title":"Grasas Y Aceites"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"406","DOI":"10.1016\/j.foodres.2006.10.017","article-title":"Rapid evaluation of frying oil degradation using ultrasonic technology","volume":"40","author":"Benedito","year":"2007","journal-title":"Food Res. Int."},{"key":"ref_30","first-page":"355","article-title":"Design on portable and fast-determination instrument for polar compounds in frying oil","volume":"33","author":"Zhao","year":"2012","journal-title":"Sci. Technol. Food Ind."},{"key":"ref_31","first-page":"142","article-title":"Capacitive sensor probe to assess frying oil degradation","volume":"2","author":"Khaled","year":"2015","journal-title":"Inf. Process. Agric."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"299","DOI":"10.7763\/IJESD.2014.V5.496","article-title":"Development and Evaluation of an Impedance Spectroscopy Sensor to Assess Cooking Oil Quality","volume":"5","author":"Khaled","year":"2014","journal-title":"Int. J. Environ. Sci. Dev."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"26457","DOI":"10.3390\/s151026457","article-title":"Sensor and Methodology for Dielectric Analysis of Vegetal Oils Submitted to Thermal Stress","volume":"15","author":"Sergio","year":"2015","journal-title":"Sensors"},{"key":"ref_34","first-page":"7","article-title":"Relationship between Physico-chemical Indexes of Lard and LF-NMR Characteristics during Frying Process","volume":"35","author":"Zhao","year":"2014","journal-title":"Food Sci."},{"key":"ref_35","first-page":"28","article-title":"Design of Signal Detection System of Capacitive Tactile Sensor Array","volume":"13","author":"Sun","year":"2015","journal-title":"Nanotechnol. Precis. Eng."},{"key":"ref_36","first-page":"128","article-title":"Design of capacitive humidity sensor","volume":"40","author":"Tian","year":"2017","journal-title":"Mod. Electron. Tech."},{"key":"ref_37","first-page":"1045","article-title":"Design of High-Precision Micro-Capacitance Detection System Based on Pcap01","volume":"26","author":"Deng","year":"2013","journal-title":"Chin. J. Sens. Actuators"},{"key":"ref_38","first-page":"20","article-title":"Capacitance Angle Detection System Based On STM32","volume":"1","author":"Kan","year":"2017","journal-title":"Electron. Qual."},{"key":"ref_39","first-page":"83","article-title":"Rapid determination of the content of polar substances in frying oil","volume":"38","author":"Cai","year":"2013","journal-title":"China Oils Fats"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"447","DOI":"10.1016\/S0039-9140(98)00148-9","article-title":"Determination of total polar parts with new methods for the quality survey of frying fats and oils","volume":"47","author":"Hein","year":"1998","journal-title":"Talanta"},{"key":"ref_41","first-page":"751","article-title":"Conductivity method for the determination of polar compounds in fried oil","volume":"42","author":"Tu","year":"2013","journal-title":"Appl. Chem. Ind."},{"key":"ref_42","first-page":"320","article-title":"Study on rapid determination of content of polar compounds in frying oil by conductivity method","volume":"30","author":"Zhou","year":"2009","journal-title":"Sci. Technol. Food Ind."},{"key":"ref_43","first-page":"53","article-title":"Rapid Detection of the Polar Component Content of Frying Oil by Conductivity Method","volume":"30","author":"Liu","year":"2015","journal-title":"J. Chin. Cereals Oils Assoc."},{"key":"ref_44","first-page":"48","article-title":"Study on Rapid Detection of the Quality of Frying Oil by Conductivity Method","volume":"9","author":"Sun","year":"2010","journal-title":"Meat Res."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/24\/5375\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:40:39Z","timestamp":1760190039000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/19\/24\/5375"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,12,5]]},"references-count":44,"journal-issue":{"issue":"24","published-online":{"date-parts":[[2019,12]]}},"alternative-id":["s19245375"],"URL":"https:\/\/doi.org\/10.3390\/s19245375","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,12,5]]}}}