Journal of Marine Bioscience and Biotechnology (한국해양바이오학회지)

The Korean Society for Marine Biotechnology (한국해양바이오학회)
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Effect of Light Quality on Growth and Fatty Acid Production in Chlorella vugaris Using Light Emitting Diodes

발광다이오드를 이용한 광파장에 따른 Chlorella vulgaris의 생장과 지방산 생산에 미치는 효과

  • Kim, Z-Hun (National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University) ;
  • Kim, Dong Keun (National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University) ;
  • Lee, Choul-Gyun (National Marine Bioenergy R&D Center & Department of Biological Engineering, Inha University)
  • 김지훈 (해양바이오에너지 생산기술개발연구센터 & 인하대학교 생물공학과) ;
  • 김동건 (해양바이오에너지 생산기술개발연구센터 & 인하대학교 생물공학과) ;
  • 이철균 (해양바이오에너지 생산기술개발연구센터 & 인하대학교 생물공학과)
  • Received : 2016.06.03
  • Accepted : 2016.06.17
  • Published : 2016.06.30
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Abstract

Microalgae are considered as superior biodiesel producers, because they could effectively produce high amount of lipid with fast growth rate. In this study, Chlorella vulgaris was exposed to various light wavelengths (${\lambda}_{max}$ 470 nm, ${\lambda}_{max}$ 525 nm, and ${\lambda}_{max}$ 660 nm) using light emitting diodes (LEDs) to examine effect of light quality on their growth and fatty acid production in 0.4-L bubble column photobioreactors. Fluorescent lamps were also used as polychromatic light sources (control). From the results, biomass productivity was varied by light wavelength from 0.05 g/L/day to 0.30 g/L/day. Maximum biomass productivity was obtained from red LED among tested ones. We also observed that contents of oleic acid and linolenic acid, which affect biodiesel properties, were significantly changed depending on supplied wavelength. These results indicated that production of algal biomass, and fatty acid content and productivity could be improved or controlled by supplying specific light wavelength.

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References

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