Quadrupole time-of-flight mass spectrometry analysis of glycerophospholipid molecular species in the two halophyte seed oils: Eryngium maritimum and Cakile maritima

•Valorization of two Tunisian halophytic plants in terms of glycerophospholipids.•Quantification of about 300 molecular species by QTOF-MS-MS for the first time.•Molecular species composition varies quantitatively among the two halophytes.•Eryngium maritimum could be considered as a good source of g...

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Bibliographic Details
Published in:Food chemistry 2016-12, Vol.213, p.319-328
Main Authors: Zitouni, Manel, Wewer, Vera, Dörmann, Peter, Abdelly, Chedly, Ben Youssef, Nabil
Format: Article
Language:English
Subjects:
Cakile maritima
Eryngium - metabolism
Eryngium maritimum
Fatty acids
Glycerophospholipids
Glycerophospholipids - metabolism
Mass Spectrometry
Molecular species
Phosphatidylcholines - metabolism
Plant Oils - metabolism
Q-TOF MS/MS
Salt-Tolerant Plants - metabolism
Seeds - metabolism
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Summary:•Valorization of two Tunisian halophytic plants in terms of glycerophospholipids.•Quantification of about 300 molecular species by QTOF-MS-MS for the first time.•Molecular species composition varies quantitatively among the two halophytes.•Eryngium maritimum could be considered as a good source of glycerophospholipids. Future applications of lipids in clinical cohort studies demand detailed glycerophospholipid molecule information and the application of high-throughput lipidomics platforms. In the present work, a novel sensitive technique with high mass resolution and accuracy was applied to accomplish phospholipid analysis. Nanospray ionization quadrupole time-of-flight mass spectrometry was used to separate and quantify the glycerophospholipid classes as well as molecular species in two halophyte seed oils from Cakile maritima and Eryngium maritimum. Precursor or neutral loss scans of their polar head groups allowed the detection of molecular species within particular glycerophospholipid classes. Phosphatidylcholine was found to be the most abundant glycerophospholipid in both seed oils whereas phosphatidylethanolamine and phosphatidic acid were less abundant. Phosphatidylinositol, phosphatidylserine and phosphatidylglycerol were minor glycerophospholipids. Several molecular species within each class were detected and the main molecular species (C36:4, C36:3, C36:2, 34:2 and C34:1) were quantitatively different between the two halophytes and the different glycerophospholipids.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2016.06.083