Lipid content and fatty acid composition of Porosira glacialis and Attheya longicornis in response to carbon dioxide (CO2) aeration
Open accessAbstract
In the current study two novel psychrophilic diatoms Porosira glacialis and Attheya longicornis were tested for suitability to CO2 mitigation coupled with production of the physiologically requisite omega- 3 fatty acids. This study is in line with the worldwide conducted research aimed at applying biorefinery concept to heavy polluting industries. Since the production of algal high value compounds, i.e. essential fatty acids, relies on utilization of residual CO2 emissions coming from industry, the costs of such production maybe substantially reduced. Besides, the ecological benefits of the biorefinery concept being implemented are obvious, since CO2 is one of the major greenhouse gases. The current research has shown that one of the tested microalgal species, the diatom P. glacialis showed good tolerance to high (20-25%) levels of CO2 and maintained growth rates comparable to controls. The total lipid content in the CO2 aerated culture increased from 8.91 to 10.57% in cell dry mass. Additionally, the content of docosahexaenoic acid (DHA) increased from 3.90 to 5.75%, while the concentration of eicosapentaenoic acid (EPA) decreased from 26.59 to 23.66%. In contrast, A. longicornis did not demonstrate any significant increase in total lipid content. Besides, its growth was hampered by high levels of CO2 aeration.
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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 [95]
The Conclusions (page unavailable) report that P. glacialis tolerated 20–25% CO2 and that CO2 conditioning increased its total lipid content. The Methods (page unavailable) specify a 20–25% CO2 treatment, not a 15% culture condition. Thus the paper supports the general point about high-CO2 tolerance and increased lipids, but not the stated 15% condition. (LLM, conf=0.88)
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- Authors
- Artamonova, E. Y., Vasskog, T., & Eilertsen, H. C.
- Affiliations
- UiT The Arctic University of Norway (NO)
- Northern Research Institute (NO)
- Corresponding author
- Artamonova, E. Y.
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2017-05-18
- Volume
- 12
- Issue
- 5
- Pages
- e0177703
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC5436678
- OpenAlex
- W2618185649
- Cited by
- 35
- References
- 27
- Citations by year
- 2026: 5 · 2025: 1 · 2024: 1 · 2023: 5 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 5 · 2018: 2
- FWCI
- 1.03
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- NORA - Norwegian Open Research Archives (submittedVersion, other-oa)
- Funders
- Forskningsråd (208463)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
- Physical Sciences › Materials Science › Biomaterials › Diatoms and Algae Research
- Keywords
- Porosira glacialis, microalgal lipid content, fatty acid composition, docosahexaenoic acid, eicosapentaenoic acid, omega-3 fatty acids, CO2 emission reduction, biorefinery, greenhouse gas emissions reduction, microalgae growth
- MeSH terms
- Air, Carbon Dioxide, Fatty Acids, Diatoms
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