Journal
ENGINEERING IN LIFE SCIENCES
Volume 11, Issue 1, Pages 52-58Publisher
WILEY
DOI: 10.1002/elsc.201000086
Keywords
Large-scale application; Lipids; Micro-algae
Categories
Funding
- University of Patras
- General Secretariat for Research and Technology
- PLAGTON S.A.
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Tetraselmis sp. and Nannochloropsis oculata, cultivated in industrial-scale bioreactors, produced 2.33 and 2.44% w/w lipid (calculated as the sum of fatty acid methyl esters) in dry biomass, respectively. These lipids contained higher amounts of neutral lipids and glycolipids plus sphingolipids, than phospholipids. Lipids of Tetraselmis sp. were characterized by the presence of eicosapentaenoic acid (that was located mainly in phospholipids), and octadecatetraenoic acid (that was equally distributed among lipid fractions), while these fatty acids were completely absent in N. oculata lipids. Additionally, lipids produced by 16 newly isolated strains from Greek aquatic environments (cultivated in flask reactors) were studied. The highest percentage of lipids was found in Prorocentrum triestinum (3.69% w/w) while the lowest in Prymnesium parvum (0.47% w/w). Several strains produced lipids rich in eicosapentaenoic and docosahexaenoic acids. For instance, docosahexaenoic acid was found in high percentages in lipids of Amphidinium sp. S1, P. parvum, Prorocentrum minimum and P. triestinum, while lipids produced by Asterionella sp. (?) S2 contained eicosapentaenoic acid in high concentration. These lipids, containing omega-3-long-chain polyunsaturated fatty acids, have important applications in the food and pharmaceutical industries and in aquaculture.
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