Comparison of Biomass and Lipid Production under Ambient Carbon Dioxide Vigorous Aeration and 3% Carbon Dioxide Condition Among the Lead Candidate Chlorella Strains Screened by Various Photobioreactor Scales

Journal Article · Tue Sep 01 00:00:00 EDT 2015 · Bioresource Technology

DOI:https://doi.org/10.1016/j.biortech.2015.08.124· OSTI ID:1224899

Kobayashi, Naoko ^[1]; Barnes, Austin ^[1]; Jensen, Travis ^[1]; Noel, Eric ^[1]; Andlay, Gunjan ^[2]; Rosenberg, Julian N. ^[3]; Betenbaugh, Michael J. ^[3]; Guarnieri, Michael T. ^[4]; Oyler, George A. ^[5]

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1. Univ. of Nebraska, Lincoln, NE (United States)
2. Synaptic Research, Baltimore, MD (United States)
3. Johns Hopkins Univ., Baltimore, MD (United States)
4. National Renewable Energy Lab. (NREL), Golden, CO (United States)
5. Univ. of Nebraska, Lincoln, NE (United States); Johns Hopkins Univ., Baltimore, MD (United States); Synaptic Research, Baltimore, MD (United States)

Chlorella species from the UTEX collection, classified by rDNA-based phylogenetic analysis, were screened based on biomass and lipid production in different scales and modes of culture. Lead candidate strains of C. sorokiniana UTEX 1230 and C. vulgaris UTEX 395 and 259 were compared between conditions of vigorous aeration with filtered atmospheric air and 3% CO₂ shake-flask cultivation. We found that the biomass of UTEX 1230 produced 2 times higher at 652 mg L^-1 dry weight under both ambient CO₂ vigorous aeration and 3% CO₂ conditions, while UTEX 395 and 259 under 3% CO₂ increased to 3 times higher at 863 mg L^-1 dry weight than ambient CO₂ vigorous aeration. The triacylglycerol contents of UTEX 395 and 259 increased more than 30 times to 30% dry weight with 3% CO₂, indicating that additional CO₂ is essential for both biomass and lipid accumulation in UTEX 395 and 259.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1224899
• Report Number(s): NREL/JA-5100-65216
• Journal Information: Bioresource Technology, Vol. 198; Related Information: Bioresource Technology; ISSN 0960-8524
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
59 BASIC BIOLOGICAL SCIENCES
Chlorella sorokiniana
Chlorella vulgaris
rDNA-based phylogenetic tree
Biomass
Lipid content