Production of microalgal biomass, triacyl glycerols and polyunsaturated fatty acids under simulated north temperate light and temperature conditions

Publikation: KonferencebidragPosterForskningpeer review


Studies on microalgal lipids are of great interest today. They find application in several industries and their utilization is forecasted to increase in the near future. The possibility of competitively growing microalgal biomass for their lipids in Northern Europe’s climatic conditions has not yet been explored. This study analyses growth, biomass production, TAG content and PUFA quality of Navicula pelliculosa, Chlorella vulgaris and Scenedesmus dimorphus when grown under different temperatures (11, 15, 19°C) and light intensities (280 and 450 μmol photons m-2 s-1), corresponding to Danish climatic conditions during spring and summer. In this work, none of the species were influenced by different light intensities, while temperature had an effect only on the two green algae. N. pelliculosa shows constant growth rates, biomass productivity, a TAG content of ~ 18.6 % TAG on DW and an unchanged PUFA profile at all the examined temperatures. C. vulgaris increases its growth rates and TAG percentage (up to ~ 18.3 % TAG on DW) but contain less unsaturated PUFA with increasing temperatures. The same behaviour is registered in S. dimorpus where the TAG percentage reaches an average of ~ 7.3 % TAG on DW. Both N. pelliculosa and C. vulgaris can be considered species of interest for their performances under low temperatures and could find application in different fields from nutraceuticals to biodiesel.
Publikationsdato17 jun. 2014
StatusUdgivet - 17 jun. 2014

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