FN Archimer Export Format
PT J
TI Seasonal Variation of Lipids and Fatty Acids of the Microalgae Nannochloropsis oculata Grown in Outdoor Large-Scale Photobioreactors
BT 
AF OLOFSSON, Martin
   LAMELA, Teresa
   NILSSON, Emmelie
   BERGE, Jean-Pascal
   DEL PINO, Victoria
   URONEN, Pauliina
   LEGRAND, Catherine
AS 1:1;2:2;3:1;4:3;5:2;6:4;7:1;
FF 1:;2:;3:;4:PDG-RBE-BRM-STBM;5:;6:;7:;
C1 Linnaeus Univ, Ctr Ecol & Evolut Microbial Model Syst EEMiS, S-39182 Kalmar, Sweden.
   Necton SA, P-8700152 Olhao, Portugal.
   IFREMER, Lab Sci & Technol Marine Biomass STBM, F-44311 Nantes 3, France.
   Neste Oil, Espoo 00095, Finland.
C2 UNIV LINNAEUS, SWEDEN
   NECTON SA, PORTUGAL
   IFREMER, FRANCE
   NESTE OIL, FINLAND
SI NANTES
SE PDG-RBE-BRM-STBM
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 1.84
TC 97
UR https://archimer.ifremer.fr/doc/00085/19582/17206.pdf
LA English
DT Article
DE ;biodiesel;microalgae;seasonal variation;Nannochloropsis oculata;large-scale;lipids;fatty acids;light;temperature
AB While focus in oil-producing microalgae is normally on nutrient deficiency, we addressed the seasonal variations of lipid content and composition in large-scale cultivation. Lipid content, fatty acid profiles and mono- di- and triglycerides (MAGs, DAGs, and TAGs) were analyzed during May 2007-May 2009 in Nannochloropsis oculata grown outdoors in closed vertical flat panels photobioreactors. Total lipids (TL) ranged from 11% of dry weight (DW) in winter to 30% of DW in autumn. 50% of the variation in TL could be explained by light and temperature. As the highest lipid content was recorded during autumn indicating an optimal, non-linear, response to light and temperature we hypothesize that enhanced thylakoid stacking under reduced light conditions resulted in more structural lipids, concomitantly with the increase in glycerides due to released photo-oxidative stress. The relative amount of monounsaturated fatty acids (MUFA) increased during autumn. This suggested a synthesis, either of structural fatty acids as MUFA, or a relative increase of C16:1 incorporated into TAGs and DAGs. Our results emphasize the significant role of environmental conditions governing lipid content and composition in microalgae that have to be considered for correct estimation of algal oil yields in biodiesel production.
PY 2012
PD MAY
SO Energies
SN 1996-1073
PU MDPI
VL 5
IS 5
UT 000304450700017
BP 1577
EP 1592
DI 10.3390/en5051577
ID 19582
ER

EF