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KMID : 0545120160260071285
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Journal of Microbiology and Biotechnology
2016 Volume.26 No. 7 p.1285 ~ p.1289
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Enhancing Photon Utilization Efficiency for Astaxanthin Production from Haematococcus lacustris Using a Split-Column Photobioreactor
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Kim Z-Hun
Park Han-Wool
Lee Ho-Sang
Lee Choul-Gyun
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Abstract
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A split-column photobioreactor (SC-PBR), consisting of two bubble columns with different sizes, was developed to enhance the photon utilization efficiency in an astaxanthin production process from Haematococcus lacustris. Among the two columns, only the smaller column of SCPBR was illuminated. Astaxanthin productivities and photon efficiencies of the SC-PBRs were compared with a standard bubble-column PBR (BC-PBR). Astaxanthin productivity of SC-PBR was improved by 28%, and the photon utilization efficiencies were 28-366% higher than the original BC-PBR. The results clearly show that the effective light regime of SC-PBR could enhance the production of astaxanthin.
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KEYWORD
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Bubble-column photobioreactor, astaxanthin, Haematococcus, Liquid circulation, photon efficiency
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