Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Optimal Culturing and Enhancement of Lipid Accumulation in a Microalga Botryococcus braunii

미세조류 Botryococcus braunii의 배양조건 최적화 및 지질축적 향상

  • Kwon, Sung-Hyun (Department of Marine Environmental Engineering, Gyeongsang National University) ;
  • Lee, Eun-Mi (Department of Energy & Environmental Engineering, Soonchunhyang University) ;
  • Cho, Dae-Chul (Department of Energy & Environmental Engineering, Soonchunhyang University)
  • 권성현 (경상대학교 해양과학대학 해양환경공학과) ;
  • 이은미 (순천향대학교 에너지환경공학과) ;
  • 조대철 (순천향대학교 에너지환경공학과)
  • Received : 2012.01.02
  • Accepted : 2012.07.09
  • Published : 2012.07.31
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Abstract

Several tests and experimental work have been done for identifying the best growth conditions and accumulated amount of lipid moiety in B. braunii, a microalga(UTEX 572) in terms of media composition. The specific growth rate was found to be the highest at 0.15 g/L-day when the phosphorus concentration was doubled with the other ingredients at the normal level. Experiments for varied media compositions revealed that the accumulation of lipid was the highest at 48% (dry cell weight based) in the nitrogen deficient medium and its corresponding specific growth rate was comparative to that in the normal BG 11 medium. In the bubble column experiments, carbon dioxide containing air produced four times more cell mass than air only. Light and glucose addition also enhanced cell mass with maximum, 1.8 g/L and accordingly 42% of lipid composition, which turned out to be a better strategy for higher lipid-producing microalgal culture.

Keywords

References

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