公开(公告)号：US20230002721A1

公开(公告)日：2023-01-05

申请号：US17942812

申请日：2022-09-12

Applicant: NICHIA CORPORATION

Inventor： Tomohisa HASUNUMA ,  Yuichi KATO ,  Yasuo FUJIKAWA ,  Tomohiro TSURUMOTO

IPC: C12N1/12 ,  C12N13/00 ,  C12M1/00

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.

公开(公告)号：US20200270566A1

公开(公告)日：2020-08-27

申请号：US16802037

申请日：2020-02-26

Applicant: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY ,  NICHIA CORPORATION

Inventor： Tomohisa HASUNUMA ,  Yuichi KATO ,  Yasuo FUJIKAWA ,  Tomohiro TSURUMOTO

IPC: C12N1/12 ,  C12M1/00 ,  C12N13/00

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 condition of the algal cells and/or a condition of an algal cell culture provided by cultivating 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 condition of the algal cells and/or the measured condition of the algal cell culture.