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.

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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)

 

 

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