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.
Yoo
Chan
C
Environmental Biotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.
Jun
So-Young
SY
Lee
Jae-Yon
JY
Ahn
Chi-Yong
CY
Oh
Hee-Mock
HM
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