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Updated: Aug 15, 2026

Evaluation of the Effect of Growth Factors on Chlorophylls a and b Production from Microalgae
Published on: October 25, 2024
Effects of nutrient supply methods and illumination with blue light emitting diodes (LEDs) on astaxanthin production
Abdolmajid Lababpour1, Keishi Hada, Kazumichi Shimahara
1Graduate School of Science and Technology, Kobe University, 1-1 Nada-ku, Rokkodai, Kobe 657-8501, Japan.
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).

