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The Photoinhibistat: Operating Microalgae Culture under Photoinhibition for Strain Selection

Francis Mairet 1 Olivier Bernard 1
1 BIOCORE - Biological control of artificial ecosystems
LOV - Laboratoire d'océanographie de Villefranche, CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique
Abstract : Microalgae have recently attracted attention for their potential to produce high added compounds, proteins, and even biofuels. Our paper seeks to develop a control strategy for light-limited continuous culture imposing a stress for which microalgae have to adapt. This operating mode - called photoinhibistat - consists, for a culture with a constant dilution rate, in varying the incident light in order to regulate the light at the bottom of the reactor, inducing a light stress. Based on a simple model of light-limited growth, we analyze the dynamics of the photoinhibistat in monoculture and in competition. It appears that the photoinhibistat can be used to select, from the initial microalgae population, the strain with the highest resistance to photoinhibition.
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https://hal.inria.fr/hal-01410835
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Submitted on : Tuesday, December 6, 2016 - 5:43:05 PM
Last modification on : Wednesday, December 9, 2020 - 3:06:25 PM

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Francis Mairet, Olivier Bernard. The Photoinhibistat: Operating Microalgae Culture under Photoinhibition for Strain Selection. 11th IFAC Symposium on Dynamics and Control of Process Systems Including Biosystems DYCOPS-CAB , Jun 2016, Trondheim, Norway. ⟨10.1016/j.ifacol.2016.07.344⟩. ⟨hal-01410835⟩

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