Abstract
A total of 13 species of microalgae and 14 strains of cyanobacteria, collected directly in the Portuguese coast and lagoons, were characterized for their fatty acid contents, focusing on two with a market potential - i.e. eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA); and another already with alternative (yet somehow more expensive) natural sources - i.e. α-linolenic (ALA) acid. The purpose of this work was their eventual inclusion as additives in food or feed. ALA was the most abundant PUFA in Nannochloropsis sp. (0.616±0.081mgFA.Lculture-1.d -1), and EPA in Phaeodactylum tricornutum (0.148±0.013mgFA.Lculture-1.d -1); Pavlova lutheri was particularly rich in EPA (0.290±0.005mgFA.Lculture-1.d -1) and DHA (0.140±0.037mgFA.Lculture-1.d -1). Despite several previous reports on similar topics and encompassing some of our microalgal species, the wild nature of our strains accounts for the novelty of this work - in addition to the characterization of a few wild cyanobacteria. Eustigmatophyceae class was the best producer of ALA, while Prymnesiophyceae was the best for EPA and ALA. Nodularia harveyana exhibited the highest ALA level (0.611±0.022mgFA.Lculture-1.d -1) and Gloeothece sp. was highest in EPA (0.030±0.004mgFA.Lculture-1.d -1).
Original language | English |
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Pages (from-to) | 2721-2729 |
Number of pages | 9 |
Journal | Food research international |
Volume | 44 |
Issue number | 9 |
DOIs | |
Publication status | Published - Nov 2011 |
Keywords
- ALA
- DHA
- EPA
- Lipid profile
- Microorganism
- PUFA