Original Paper

Aquaculture International

, Volume 15, Issue 1, pp 1-9

Fatty acid composition of 12 microalgae for possible use in aquaculture feed

  • Vishwanath PatilAffiliated withDepartment of Plant and Environmental Sciences, Norwegian University of Life Sciences Email author 
  • , Torsten KällqvistAffiliated withNorwegian Institute for Water Research (NIVA)
  • , Elisabeth OlsenAffiliated withThe Norwegian Food Research InstituteDepartment of Chemistry, Biotechnology and Food Sciences, Norwegian University of Life Sciences, P. O. Box 5003
  • , Gjermund VogtAffiliated withThe Norwegian Food Research Institute
  • , Hans R. GislerødAffiliated withDepartment of Plant and Environmental Sciences, Norwegian University of Life Sciences

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Abstract

Twelve algal strains representing the classes Cyanophyceae, Prymnesiophyceae, Bacillariophyceae, Rhodophyceae, Cryptophyceae, Chlorophyceae, Xantophyceae and Eustigmatophyceae were selected mainly from the culture collection of the Norwegian Institute for Water Research (NIVA). The algae were grown as continuous cultures in a 1.8 l. reactor, internally illuminated with an 11 W fluorescent tube. The retention time was adjusted in the range 2–4 days to fit the growth rate of the algae. The growth responses and fatty acid composition were analysed. The maximum production rate was obtained with Pseudokirchneriella subcapitata (0.63 g 1−1 day−1) and the lowest with Porphyridium cruentum 0.13 g 1−1 day−1. Arachidonic acid (AA) and eicosapentaenoic acid (EPA) were the dominating polyunsaturated fatty acids (PUFAs) in P. cruentum, while only EPA accumulated in Phaeodactylum tricornutum. Docosahexaenoic acid (DHA) was the major PUFA in Isochrysis galbana, while Pavlova sp. had both EPA and DHA. This is the first report on the fatty acid profiles of Nannochloropsis oceanica, Chroococcus sp., Synechococcus sp. and Tribonema sp.

Keywords

Continuous culture Growth media Photobioreactor Polyunsaturated fatty acids Productivity