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  • Title: The occurrence of inositolphosphoceramides in spirulina microalgae.
    Author: Calvano CD, Coniglio D, D'Alesio PE, Losito I, Cataldi TRI.
    Journal: Electrophoresis; 2020 Oct; 41(20):1760-1767. PubMed ID: 32297342.
    Abstract:
    Spirulina microalga (Arthrospira platensis) is an interesting phototrophic organism because of its high content of nutrients including proteins, lipids, essential amino acids, antioxidants, vitamins, polysaccharides, and minerals. Hydrophilic interaction liquid chromatography (HILIC) coupled to linear ion trap (LIT) and Orbitrap Fourier transform mass spectrometry (FTMS) via ESI was employed for the separation and characterization of lipid species in A. platensis. Inositolphosphoceramides (IPC) are minor but important constituents of spirulina; their investigation was accomplished by HILIC-ESI-MS including collision-induced dissociation (MS2 , MS3 ) of deprotonated molecules in the LIT analyzer and a schematic fragmentation pattern is described. All four commercial spirulina samples revealed the occurrence of the same IPC species at m/z 796.6 (d18:0/16:0;1), 810.6 (d18:0/17:0;1), 824.6 (d18:0/18:0;1), and 826.6 (d18:0/17:0;2) but in diverse relative abundance. This study sets the stage for future investigations on IPC in other algae and microalgae.
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