Lipid Production by a CO2-Tolerant Green Microalga, Chlorella sp. MRA-1
Open accessAbstract
Since CO2 concentrations in industrial flue gases are usually 10%-20%, one of the prerequisites for efficient CO2 removal by algae is the level of tolerance of microalgal species to exposure to high concentrations of CO2. A newly isolated microalgal strain, Chlorella sp. MRA-1, could retain growth with high concentrations of CO2 up to 15%. The highest lipid productivity for Chlorella sp. MRA-1 was 0.118 g/l/day with a 5% CO2 concentration. Octadecenoic acid and hexadecanoic acid, the main components of biodiesel, accounted for 70% of the total fatty acids. A lipid content of 52% of dry cell weight was achieved with limited amounts of nitrogen. Chlorella sp. MRA-1 seems to be an ideal candidate for biodiesel production when cultured with high concentrations of CO2.
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Certain microalgae species have been discovered thriving in elevated CO2 environments, with a few demonstrating enhanced lipid accumulation capabilities even under a 15% CO2 culture condition.
“Currently, certain microalgae species have been discovered thriving in elevated CO2 environments, with a few demonstrating enhanced lipid accumulation capabilities even under a 15% CO2 culture condition [91–95].”
From Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities (2024) · cites this paper as [91]
The Abstract reports that Chlorella sp. MRA-1 retained growth at CO₂ concentrations up to 15%, and the Discussion says its lipid content increased at higher CO₂ concentrations. The copy does not report enhanced lipid accumulation specifically at 15%; the Results instead report that lipid yield declined as CO₂ increased above 5%. (LLM, conf=0.82)
Experimental — accuracy not yet measuredIn large-scale production, industrial flue gas is an economical source of CO2 for microalgae biofuel production, with CO2 concentrations typically ranging from 10% to 20%.
“In large-scale production, industrial flue gas is an economical source of CO2 for microalgae biofuel production, with CO2 concentrations typically ranging from 10% to 20% [91].”
From Microalgae biofuels: illuminating the path to a sustainable future amidst challenges and opportunities (2024) · cites this paper as [91]
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Research works printed but not linked: 1
- Mata TM, Martins AA, Caetano NS. 2010. Microalgae for biodiesel production and other applications: a review. Renew. Sustain. Energy Rev. 14: 217-232.
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“Several strains in our Culture Bank for Bioenergy Microbial Resources were proved to have the potential as feedstock for biodiesel production under adverse conditions (Hu et al. 2013; Liu et al. 2012; Yuan et al. 2011; Zheng et al. 2014).”
BackgroundSelf-citationCho, J. M., Oh, Y., Park, W.-K., & Chang, Y. K. (2020) · Journal of Microbiology and Biotechnology · doi:10.4014/jmb.2005.05039 · Cited by 22 · see citing works
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“As it is well known that CO2 is the causative agent of the greenhouse effect, using microalgal CCMs, it is possible to sequester CO2 into biological systems, developing sustainable green technologies with beneficial CO2 sequestration (Lam and Lee 2013; Zheng et al. 2014).”
BackgroundChen, J., Song, C. W., Ke, Y., Wang, M., Qiu, J., Nie, L., Li, G., & Gao, G. (2025) · Environmental Research · doi:10.1016/j.envres.2025.122897 · Cited by 3 · see citing works
- Authors
- Zheng, Y., Yuan, C., Liu, J., Hu, G., & Li, F.
- Affiliations
- Ocean University of China (CN)
- Chinese Academy of Sciences (CN)
- Corresponding author
- Li, Fuli
- Venue
- Journal of Microbiology and Biotechnology
- Published
- 2014-05-28
- Volume
- 24
- Issue
- 5
- Pages
- 683-689
- ISSN
- 1017-7825 (ISSN-L)
- 1738-8872
- OpenAlex
- W2319630594
- Cited by
- 9
- References
- 0
- Citations by year
- 2025: 1 · 2024: 1 · 2023: 1 · 2020: 3 · 2016: 1 · 2015: 2
- FWCI
- 0.33
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Microbiology and Biotechnology (publishedVersion)
- PubMed (publishedVersion)
- Institutional knowledge base (Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences) (submittedVersion, cc-by-nc-sa)
- Institutional knowledge base (Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences) (submittedVersion)
- Funders
- National Natural Science Foundation of China (U1232126)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
- Keywords
- CO2 tolerance, microalgal lipid production, biodiesel feedstock, fatty acid composition, octadecenoic acid, palmitic acid, nitrogen limitation, lipid productivity
- MeSH terms
- Adaptation, Biological, Carbon Dioxide, Chlorella, Culture Media, Fatty Acids, Lipids, Nitrogen
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