Unraveling the neutral and polar lipidome of Nordic brown macroalgae: A sustainable source of functional lipids
Thu H. Pham, Raymond Thomas, Clarissa Schwab, Mario M. Martinez, Natalia P. Vidal
Food Chemistry, Volume 459, 30 November 2024, 140415
Highlights
Brown macroalgae lipidome was characterized by untargeted HILIC-C30RP-HRMS.
Lipid content was <10% in all the brown macroalgae species analyzed.
Polar profile encompasses glycolipids, betaine lipids, phospholipids, and sphingolipids.
Neutral lipids, tri- and di-glycerides, accounted for 72–82% of total lipids.
Betaine lipids are a main polar component in Fucales algae with potential biotechnological relevance.
Abstract
Brown macroalgae represent a sustainable and abundant source of lipids with acknowledged functional and health benefits. Nonetheless, macroalgae lipidome has been poorly unraveled due to lipids complex structural and chemical diversity. In this study, a comprehensive lipidomic analysis was performed in four macroalgae: Saccharina latissima, Fucus vesiculosus, Fucus serratus and the invasive Sargassum muticum, using HILIC-C30RP-HRMS. Neutral lipids (tri-, di-glycerides) comprised 72–82% of total lipids (TL) with a highly unsaturation profile (27–49% depending on species). The polar lipidome comprised glycolipids, phospholipids, betaine lipids and sphingolipids with varied content among macroalgae. S. latissima displayed the greatest level of glycolipids (23% of TL), by contrast with the dominance of long-chain polyunsaturated betaine lipids (10–18% of TL) in the other species, particularly in S. muticum. Phospholipids and sphingolipids were detected in low abundance (<1.7% of TL). This study elevated the potential of brown macroalgae as an emerging reservoir of bioactive lipids with nutritional relevance.
Graphical abstract
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