Contributions of chromatography to the knowledge of lipids: oils and fats Authors Miquel Gassiot Universitat Ramon Llull. Institut Químic de Sarrià (IQS). Lluís Comellas Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Francesc Broto Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Gemma Gotor Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Aracely Guadalupe Artiga Universitat Centreamericana José Simeón Cañas (UCA) (El Salvador) Keywords: Gas chromatography, lipids, trans fatty acids, QSRR. Abstract Gas chromatography (GC) has made it possible to characterize lipid materials at molecular level and it has also allowed the development of rapid and high-reproducibility analytical methods. With a historical focus, this paper describes some of the results obtained with this analytical technique relating to the characterization of various types of oils, fats and lipid materials. Likewise, this paper explains how this technique has allowed to solve some serious incidents stemming from contamination and fraud. It also deals with a subject of great interest at the present time: the trans isomers of oleic acid and the difficulty of their identification by analysis. Also presented in this paper are the results obtained in the identification of trans-oleic acid configuration isomers thanks to the application of the methodology of correlation between chromatographic retention time and the molecular structure of compounds (QSRR methodology).Keywords: Gas chromatography, lipids, trans fatty acids, QSRR. Downloads Download data is not yet available. Author Biographies Lluís Comellas, Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Cristina Ribas Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Gemma Gotor, Universitat Ramon Llull. Institut Químic de Sarrià (IQS) Downloads PDF (Català) Issue No. 17 (2018) Section Articles License The intellectual property of articles belongs to the respective authors. On submitting articles for publication to the journal Revista de la Societat Catalana de Química, authors accept the following terms:Authors assign to Catalan Society of Chemistry (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Revista de la Societat Catalana de Química.Authors answer to Catalan Society of Chemistry for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Catalan Society of Chemistry declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at http://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.The journal is not responsible for the ideas and opinions expressed by the authors of the published articles.