Abstract
The lipid compositions of Octopus cyanea and Loligo sp. byproducts collected from southwestern Madagascar were studied in order to valorize the marine byproducts. Liquid chromatography-high-resolution mass spectrometry was used to characterize lipid species from O. cyanea and Loligo sp. byproduct extracts. A broad range of lipids was found in sample extracts. Although both O. cyanea and Loligo sp. belong to the cephalopod group, their byproducts exhibited different molecular lipid species. As an example, sphingosine analogs predominated in Loligo sp. extracts, while glycerolipids and glycerophospholipids were the most prevalent in O. cyanea extracts. However, ω3 and ω6 polyunsaturated fatty acids as well as plasmalogens were present in both marine byproducts. Some rare and new molecules were also found. For the first time, the characterization of several molecular lipid species of O. cyanea and Loligo sp. byproducts was performed. Our qualitative analysis unravels a great diversity of lipids and new putative bioactive compounds that could be used for their nutritional values or therapeutic purposes.
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