{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,31]],"date-time":"2025-10-31T07:31:59Z","timestamp":1761895919891,"version":"3.40.4"},"reference-count":23,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2014,10,29]],"date-time":"2014-10-29T00:00:00Z","timestamp":1414540800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/39860\/2007"],"award-info":[{"award-number":["SFRH\/BD\/39860\/2007"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PEst-OE\/AGR\/UI0245\/2014"],"award-info":[{"award-number":["PEst-OE\/AGR\/UI0245\/2014"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Euro J Lipid Sci &amp; Tech"],"published-print":{"date-parts":[[2015,3]]},"abstract":"<jats:sec><jats:label\/><jats:p>The level of polar compounds is a good indicator of oil quality and it is the basis of the international regulations limiting the use of degraded frying fats\/oils for human consumption. According to ISO 8420:2002 standard, polar compound content is determined by adsorption chromatography extraction followed by gravimetric quantification. This simple and accurate method is time\u2010consuming and considerable amounts of silica\u2010gel and solvents are needed. This study aims at developing a fast and reliable alternative method for polar compound quantification in frying oils, using HPTLC\u2010densitometry. This technique was tested for soybean, sunflower and peanut oils, heated at 180\u00b0C, and for frying oil samples. This technique proved to be fast, accurate and repeatable.<\/jats:p><jats:p><jats:bold>Practical applications:<\/jats:bold>The developed method is adequate for rapid screening of unknown oil samples, with respect to their level of polar compounds. Using HPTLC\u2010densitometry to evaluate polar compound content in oils, the number of samples to be analyzed by the ISO standard method may be considerably reduced to those having values close to the maximum allowed. Thus, the proposed methodology allows for a reduction in time and chemicals used, with economic and environmental benefits.<\/jats:p><jats:p><jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/ejlt201400230-gra-0001.png\" xlink:title=\"ejlt201400230-gra-0001\"\/><\/jats:p><jats:p>HPTLC\u2010densitometry is an alternative technique to the standard method for polar compound quantification in heated\/frying vegetable oils. The method developed is fast, accurate, and repeatable with economic and environmental benefits.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ejlt.201400230","type":"journal-article","created":{"date-parts":[[2014,10,3]],"date-time":"2014-10-03T10:08:42Z","timestamp":1412330922000},"page":"311-319","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Rapid quantification of polar compounds in thermo\u2010oxidized oils by HPTLC\u2010densitometry"],"prefix":"10.1002","volume":"117","author":[{"given":"Ana Cristina","family":"Correia","sequence":"first","affiliation":[{"name":"Departamento das Ind\u00fastrias Alimentares Instituto Polit\u00e9cnico de Viseu Escola Superior Agr\u00e1ria de Viseu Viseu Portugal"},{"name":"Instituto Superior de Agronomia CEER Biosystems Engineering University of Lisbon Lisbon Portugal"}]},{"given":"Eric","family":"Dubreucq","sequence":"additional","affiliation":[{"name":"Montpellier SupAgro UMR IATE Montpellier France"}]},{"given":"Suzana","family":"Ferreira\u2010Dias","sequence":"additional","affiliation":[{"name":"Instituto Superior de Agronomia CEER Biosystems Engineering University of Lisbon Lisbon Portugal"}]},{"given":"J\u00e9r\u00f4me","family":"Lecomte","sequence":"additional","affiliation":[{"name":"CIRAD UMR IATE Montpellier France"}]}],"member":"311","published-online":{"date-parts":[[2014,10,29]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0260-8774(96)00020-9"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0260-8774(02)00243-1"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(99)00321-0"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1533\/9781855736429.2.87"},{"key":"e_1_2_6_6_1","doi-asserted-by":"crossref","unstructured":"M\u00e1rquez\u2010Ruiz G. Determination of oxidized monomeric dimeric and oligomeric triacylglycerols; diacylglycerols and free fatty acids 2009. URL:http:\/\/lipidlibrary.aocs.org\/frying\/a\u2010oxtgetc\/index.htm. Accessed March 29 2014.","DOI":"10.21748\/LipidLibrary.39199"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/1438-9312(200009)102:8\/9<566::AID-EJLT566>3.0.CO;2-B"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1351\/pac200072081563"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1533\/9781855736658.2.293"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.84.5.722"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1172\/JCI1314"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1080\/10408390601177613"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0098-2997(03)00024-4"},{"key":"e_1_2_6_14_1","first-page":"323","volume-title":"Deep Frying: Chemistry, Nutrition and Practical Applications","author":"Firestone D.","year":"1996"},{"key":"e_1_2_6_15_1","unstructured":"ISO. (International Organization for Standardization) 8420: Animal and vegetable fats and oils\u2014Determination of content of polar compounds (ISO 8420:2002). ISO Standards Authority Geneva (Switzerland)2002."},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.201000533"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9673(96)00429-3"},{"key":"e_1_2_6_18_1","first-page":"308","article-title":"High performance size exclusion chromatography of polar compounds in heated and non\u2010heated fats","volume":"90","author":"Dobarganes M. 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