title: Effects of nutrient supply methods and illumination with blue light emitting diodes (LEDs) on astaxanthin production by Haematococcus pluvialis.
abstract: In order to increase the cell concentration and the accumulation of astaxanthin, the effects of nutrient concentration, pH, illumination and methods of supplying nutrients were studied for the cultivation of Haematococcus pluvialis. The replacement of media to avoid the deficiency of nutrients increased the cell concentration above 1 mg-dry cell cm(-3) without induction of astaxanthin accumulation. Illumination with blue light emitting diode lamps and nutrient starvation induced accumulation of astaxanthin, and the interactive effects of these two increased the astaxanthin concentration to 76 mug cm(-3).
authors.affiliation: Graduate School of Science and Technology, Kobe University, 1-1 Nada-ku, Rokkodai, Kobe 657-8501, Japan.
authors.forename: Abdolmajid
authors.initials: A
authors.lastname: Lababpour
authors.forename: Keishi
authors.initials: K
authors.lastname: Hada
authors.forename: Kazumichi
authors.initials: K
authors.lastname: Shimahara
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Katsuda
authors.forename: Shigeo
authors.initials: S
authors.lastname: Katoh