Method of cultivating algae and photobioreactor
AssigneeNichia Corporation
InventorsTomohisa Hasunuma, Yuichi Kato, Yasuo Fujikawa, Tomohiro Tsurumoto
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Abstract
A method of cultivating algal cells of an algae belonging to a class selected from Chlorophyceae, Euglenophyceae, Bacillariophyceae and Haptophyceae includes: irradiating the algal cells with an artificial light having a ratio of (i) photon flux density in a wavelength range of 520-630 nm to (ii) photosynthetic photon flux density, that is 65% or more; and measuring a cell size of the algal cells. Irradiation and non-irradiation of the algal cells with the artificial light are switched, or the photon flux density in the wavelength range of 520-630 nm is changed, according to the measured cell size.
Claims18
A method of cultivating algal cells of an algae belonging to a class selected from Chlorophyceae, Euglenophyceae, Bacillariophyceae and Haptophyceae, the method comprising:
- irradiating the algal cells with an artificial light having a ratio of (i) photon flux density in a wavelength range of 520-630 nm to (ii) photosynthetic photon flux density, that is 65% or more;
- and
- measuring a cell size of the algal cells;
- and
- switching between performing the irradiation and stopping the irradiation of the algal cells with the artificial light, or changing the photon flux density in the wavelength range of 520-630 nm, according to the measured cell size.
Dependencies are inferred from the claim text.