Modelling neutral lipid production by the microalga Isochrysis affinis galbana under nitrogen limitation

This article proposes a dynamical model of microalgal lipid production under nitrogen limitation. In this model, intracellular carbon is divided between a functional pool and two storage pools (sugars and neutral lipids). The various intracellular carbon flows between these pools lead to a complex d...

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Bibliographic Details
Published inBioresource technology Vol. 102; pp. 142 - 149
Main Authors Mairet, Francis, Bernard, Olivier, Masci, Pierre, Lacour, Thomas, Sciandra, Antoine
Format Journal Article
LanguageEnglish
Published Elsevier 2011
Subjects
Automatic Control Engineering
Computer Science
Dynamical Systems
Engineering Sciences
Life Sciences
Mathematics
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Summary:This article proposes a dynamical model of microalgal lipid production under nitrogen limitation. In this model, intracellular carbon is divided between a functional pool and two storage pools (sugars and neutral lipids). The various intracellular carbon flows between these pools lead to a complex dynamic with a strong discrepancy between synthesis and mobilization of neutral lipids. The model has been validated with experiments of Isochrysis aff. galbana (clone T-iso) culture under various nitrogen limitation conditions and under nitrogen starvation. The hysteresis behavior of the neutral lipid quota observed experimentally is accurately predicted.
ISSN:0960-8524
DOI:10.1016/j.biortech.2010.06.138