Elucidation of triacylglycerols in cod liver oil by liquid chromatography electrospray tandem ion-trap mass spectrometry

  • Ying Xu Zeng
  • , Pedro Araujo*
  • , Zhen Yu Du
  • , Thu Thao Nguyen
  • , Livar Frøyland
  • , Bjørn Grung
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Though liquid chromatography electrospray tandem mass spectrometry (LC-ESI-MS2) has been widely used in the structural elucidation of triacylglycerols (TAG) in vegetable oils, its potentiality for the identification of TAG molecules in omega-3 rich oils remains unexplored till date. Hence, this article investigates the applicability of LC-ESI-MS 2 for the structural characterization of naturally occurring TAG in cod liver oil without the TAG fractionation during the sample preparation. A computational algorithm was developed to automatically interpret the mass spectra and elucidate the TAG structures respectively. The results were compared against the lipase benchmark method. A principal component analysis study revealed that it is possible to discriminate genuine from adulterated cod liver oil.

Original languageEnglish
Pages (from-to)1261-1270
Number of pages10
JournalTalanta
Volume82
Issue number4
DOIs
StatePublished - 15 Sep 2010
Externally publishedYes

Keywords

  • Algorithm
  • Cod liver oil
  • Fatty acids
  • Liquid chromatography electrospray tandem mass spectrometry
  • Triacylglycerols

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