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KMID : 0380020100250060553
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Korean Journal of Biotechnology and Bioengineering
2010 Volume.25 No. 6 p.553 ~ p.558
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Production of Biomass and Lipid Using Microalga Nannochloris Oculata Under Different Conditions of Nitrogen and Irradiance
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Park Sang-Jin
Choi Yoon-E
Kim Chul-Woong
Park Won-Kun
Yang Ji-Won
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Abstract
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Increasing demands on fossil fuel have led to the unprecedented attraction to microalgal biofuel as an alternative energy. In this study, we investigated growth and lipid productions of microalga Nannochloris oculata under various carbon dioxide or nitrogen source concentrations and irradiance conditions. Biomass production of N. oculata was highest under 2% CO2 with 0.3 flow rate (vvm). In addition, biomass productivities were proportional to the concentration of nitrogen source, whereas lipid biosynthesis was suppressed under higher nitrogen concentration (up to 50 mg/L). High irradiation (160~180 μmol/m2·s) enhanced growth rate and lipid production of N. oculata.
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KEYWORD
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Nannochloris oculata, lipid production, nitrogen concentration, biomass productivities
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