KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Production of Biomass and Lipid Using Microalga Nannochloris oculata Under Different Conditions of Nitrogen and Irradiance

미세조류 Nannochloris oculata의 성장과 지질 생산에 미치는 질소 농도와 광량의 영향

  • Park, Sang-Jin (Department of Chemical and Biomolecular Engineering, KAIST) ;
  • Choi, Yoon-E (Department of Chemical and Biomolecular Engineering, KAIST) ;
  • Kim, Chul-Woong (Department of Chemical and Biomolecular Engineering, KAIST) ;
  • Park, Won-Kun (Department of Chemical and Biomolecular Engineering, KAIST) ;
  • Yang, Ji-Won (Department of Chemical and Biomolecular Engineering, KAIST)
  • 박상진 (한국과학기술원 생물화학공학과) ;
  • 최윤이 (한국과학기술원 생물화학공학과) ;
  • 김철웅 (한국과학기술원 생물화학공학과) ;
  • 박원근 (한국과학기술원 생물화학공학과) ;
  • 양지원 (한국과학기술원 생물화학공학과)
  • Received : 2010.11.25
  • Accepted : 2010.12.07
  • Published : 2010.12.31
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Abstract

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% $CO_2$ 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 ($160{\sim}180\;{\mu}mol/m^2{\cdot}s$) enhanced growth rate and lipid production of N. oculata.

Keywords

References

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