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Updated: Jul 24, 2026

Analysis of Fatty Acid Content and Composition in Microalgae
Published on: October 1, 2013
Sulfoquinovosyl diacylglycerols from the alga Heterosigma carterae
M Keusgen1, J M Curtis, P Thibault
1Institute for Marine Biosciences, National Research Council of Canada, Halifax, Nova Scotia, Canada.
Abstract:
An extract of the chloromonad Heterosigma carterae (Raphidophyceae), cultivated in natural seawater, contained a complex mixture of sulfoquinovosyl diacylglycerols. Palmitoyl (16:0), three isomers of hexadecenoyl (16:1 cis delta 9, delta 11, delta 13), and eicosapentenoyl (20:5) were found to be the main fatty acyl substituents. Exact double-bond sites were determined by mass spectrometry analysis of the corresponding nicotinyl derivatives. Four major sulfoquinovosyl diacylglycerol components were partially purified and identified as 1-4 by interpretation of their nuclear magnetic resonance and mass spectral data. In addition, complete analysis of the H. carterae sulfoquinovosyl diacylglycerols was performed using high-performance liquid chromatography combined with electrospray tandem mass spectrometry.
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