Ion Mobility–Mass Spectrometry Approach for the Comparison of Sheep and Goat Milk Lipidomes

Author:

Manis Cristina1,Scano Paola1ORCID,Garau Viviana2,Addis Margherita3ORCID,Ibba Ignazio4,Caboni Pierluigi1ORCID

Affiliation:

1. Department of Life and Environmental Sciences, University of Cagliari, 09042 Cagliari, Italy

2. Scuola di Specializzazione in Farmacia Ospedaliera, Dipartimento di Chimica e Farmacia, Università di Sassari, Via Muroni 23a, 07100 Sassari, Italy

3. Agris Sardegna, Servizio Ricerca Prodotti di Origine Animale, Loc. Bonassai, 07040 Olmedo, Italy

4. Associazione Regionale Allevatori, Laboratorio Analisi del Latte, Loc. Palloni, Nuraxinieddu, 09170 Oristano, Italy

Abstract

In this work, we report an analytical procedure to investigate the lipid compositions of sheep and goat milk. This approach is based on an ion mobility–high-resolution mass spectrometric method to facilitate the identification of complex lipid species and their regiochemistry. A common triacylglycerol profile was observed for sheep and goat milk samples, while a higher abundance of medium-chain fatty acids was observed at the sn-2 position for sheep milk. Furthermore, differences can be also observed in the levels of saturated and unsaturated fatty acids at the sn-2 position. In terms of lipid classes, goat milk showed higher levels of triacylglycerols, phosphatidylinositols and ether-linked phosphatidylethanolamines, while sheep milk showed higher levels of free fatty acids, lysophosphatidylethanolamines, lysophosphocholines and non-hydroxy fatty acid-dihydrosphingosine ceramides when compared with goat milk.

Funder

Fondazione Banco di Sardegna

Biomilkchina

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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