期刊
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
卷 21, 期 10, 页码 1081-1087出版社
KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
DOI: 10.4014/jmb.1103.03041
关键词
Astaxanthin; Haematococcus pluvialis; photobioreactor; multistage process
资金
- Advanced Biomass R&D Center (ABC) of Korea
- Ministry of Education, Science and Technology [ABC-2010-0029728, ABC-2010-0029800]
An internally radiating photobioreactor was applied for the production of astaxanthin using the unicellular green alga Haematococcus pluvialis. The cellular morphology of H. pluvialis was significantly affected by the intensity of irradiance of the photobioreactor. Small green cells were widespread under lower light intensity, whereas big reddish cells were predominant under high light intensity. For these reasons, growth reflected by cell number or dry weight varied markedly with light conditions. Even under internal illumination of the photobioreactor, light penetration was significantly decreased as algal cells grew. Therefore, we employed a multistage process by gradually increasing the internal illuminations for astaxanthin production. Our results revealed that a multistage process might be essential to the successful operation of a photobioreactor for astaxnthin production using H. pluvialis.
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