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Mar. Drugs 2019, 17(3), 151; https://doi.org/10.3390/md17030151

Fatty Acid Profiles and Production in Marine Phytoplankton

Section for Oceans and Arctic, Technical University of Denmark, Kemitorvet, Building 202, DK-2800 Kgs. Lyngby, Denmark
Received: 28 January 2019 / Revised: 23 February 2019 / Accepted: 26 February 2019 / Published: 4 March 2019
(This article belongs to the Special Issue The Sources and Production of Polyunsaturated Fatty Acids)
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Abstract

Microalgae are the primary producers of carbon in marine ecosystems, fixing carbon and subsequently generating various biomolecules such as carbohydrates, proteins and lipids. Most importantly, microalgae are the generators and main suppliers of ω3 polyunsaturated fatty acids (ω3PUFA) in the marine ecosystem, which have a fundamental importance for the functioning and quality of the whole marine food web. A meta-analysis of over 160 fatty acid profiles of 7 marine phytoplankton phyla reveals not only a phyla-specific, but also a highly class-specific PUFA production of marine phytoplankton. The highest EPA (Eicosapentaenoic acid; 20:5ω3) production per total fatty acids was found in 2 classes of Haptophyta and in Ochrophyta, while Dinophyta and the Haptophyte Emiliana huxleyi show the highest production of DHA (Docosahexaenoic acid; 22:6ω3). An important precursor for EPA, Stearidonic acid (SDA, 18:4ω3) is found in high proportions in Cryptophyta and the Chlorophta class Pyramimonadophyceae. Per unit of carbon, Chlorophyta and Cyanobacteria were the poorest producers of highly unsaturated fatty acids (HUFA). The remaining phyla had a similar HUFA contribution per unit of carbon but with different compositions. The nutritional and environmental effects on the phytoplankton PUFA production is summarized and shows a lowering of the PUFA content under stressful environmental conditions. View Full-Text
Keywords: marine phytoplankton; fatty acids; fatty acid synthesis; PUFA synthesis; EPA; DHA; SDA; environmental effects marine phytoplankton; fatty acids; fatty acid synthesis; PUFA synthesis; EPA; DHA; SDA; environmental effects
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Jónasdóttir, S.H. Fatty Acid Profiles and Production in Marine Phytoplankton. Mar. Drugs 2019, 17, 151.

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