Selection of microalgae for lipid production under high levels carbon dioxide.
To select microalgae with a high biomass and lipid productivity, Botryococcus braunii, Chlorella vulgaris, and Scenedesmus sp. were cultivated with ambient air containing 10% CO(2) and flue gas. The biomass and lipid productivity for Scenedesmus sp. with 10% CO(2) were 217.50 and 20.65 mg L(-1)d(-1) (9% of biomass), while those for B. braunii were 26.55 and 5.51 mg L(-1)d(-1) (21% of biomass). With flue gas, the lipid productivity for Scenedesmus sp. and B. braunii was increased 1.9-fold (39.44 mg L(-1)d(-1)) and 3.7-fold (20.65 mg L(-1)d(-1)), respectively. Oleic acid, a main component of biodiesel, occupied 55% among the fatty acids in B. braunii. Therefore, the present results suggested that Scenedesmus sp. is appropriate for mitigating CO(2), due to its high biomass productivity and C-fixation ability, whereas B. braunii is appropriate for producing biodiesel, due to its high lipid content and oleic acid proportion.
Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.
Chan
C
Yoo
So-Young
SY
Jun
Jae-Yon
JY
Lee
Chi-Yong
CY
Ahn
Hee-Mock
HM
Oh
D018533:Biomass; D019149:Bioreactors; D002245:Carbon Dioxide / Q000032:analysis / Q000378:metabolism* / Q000494:pharmacology; D018929:Cell Culture Techniques; D000460:Chlorophyta / Q000145:classification / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D050356:Lipid Metabolism; D013696:Temperature; D013997:Time Factors
D002245:Carbon Dioxide