Centre National De La Recherche Scientifique

Inria Institut National De Recherche En Informatique Et En Automatique

Université Pierre Et Marie Curie (Paris 6)

Sorbonne Université

Centre National De La Recherche Scientifique-cnrs

Francis Mairet

Olivier Bernard

Antoine Sciandra

Éric Pruvost

Hubert Bonnefond

Charlotte Combe

The invention relates to a bioreactor including: a light source (); a light sensor () facing said light source; a vat () that is placed between the light source () and the light sensor (), said vat being intended to receive a culture medium comprising a cellular culture of photosynthetic microorganisms; a controller () connected to the light sensor () in order to control the vat () to obtain a chosen cellular-culture concentration (xi) in the culture medium during a working period, said light source () being capable of emitting incident light (L) of an input light intensity (Iin) in the direction of the vat (), and the light sensor () being capable of measuring an output light intensity (Iout) and of transmitting data relating to this intensity (Iout) to the controller for the control of the vat; and a system () for controlling the light source (), this system being arranged to adjust, during a period shorter than or equal to said working period, the input light intensity (Iin) to a setpoint value allowing a cellular stress to be induced in certain at least of said photosynthetic microorganisms.

Selective bioreactor for microalgae

The invention relates to a bioreactor comprising a tank containing a culture medium in which a cell culture composed of algae cells is dispersed. The cell culture of algae has a concentration greater than 0.1 g/L in the culture medium, and each algal cell has a minimum absorption in a specific range of wavelengths of light. The bioreactor comprises a light source that is capable of emitting incident light in the direction of the tank, 60% of the photons of the incident light having a wavelength which is included in said specific range of wavelengths of light. The invention also relates to the use of the bioreactor for the production of biomass.

Bioreactor for microalgae

Growing community of inventors

Valbonne, France

Francis Mairet