Growth and lipid accumulation of microalgae from fluctuating brackish and sea water locations in South East Queensland—Australia
Open accessAbstract
One challenge constraining the use of microalgae in the food and biofuels industry is growth and lipid accumulation. Microalgae with high growth characteristics are more likely to originate from the local environment. However, to be commercially effective, in addition to high growth microalgae must also have high lipid productivities and contain the desired fatty acids for their intended use. We isolated microalgae from intertidal locations in South East Queensland, Australia with adverse or fluctuating conditions, as these may harbor more opportunistic strains with high lipid accumulation potential. Screening was based on a standard protocol using growth rate and lipid accumulation as well as prioritizing fatty acid profiles suitable for biodiesel or nutraceuticals. Using these criteria, an initial selection of over 50 local microalgae strains from brackish and sea water was reduced to 16 strains considered suitable for further investigation. Among these 16 strains, the ones most likely to be effective for biodiesel feedstock were Nitzschia sp. CP3a, Tetraselmis sp. M8, Cymbella sp. CP2b, and Cylindrotheca closterium SI1c, reaching growth rates of up to 0.53 day(-1) and lipid productivities of 5.62 μg mL(-1)day(-1). Omega-3 fatty acids were found in some strains such as Nitzschia sp. CP2a, Nitzschia sp. CP3a and Cylindrotheca closterium SI1c. These strains have potential for further research as commercial food supplements.
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f/2 media and BG-11 differ by 20 times in the amount of nitrogen (-N).
“For example, f/2 media [130–132] and BG-11 [83, 133, 134] differ by 20 times in the amount of nitrogen (-N).”
From Nitrogen and phosphorus stress as a tool to induce lipid production in microalgae (2023) · cites this paper as [131]
The Materials and methods section (page unavailable) says the strains were grown in f/2 medium and that nitrate was monitored, but gives no nitrogen-content comparison with BG-11. Searches for BG-11, medium composition, and the claimed 20-fold difference found no passage addressing that comparison. (LLM, conf=0.76)
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Nitrogen and phosphorus stress as a tool to induce lipid production in microalgae
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- Authors
- Duong, V. T., Thomas-Hall, S. R., & Schenk, P. M.
- Affiliations
- The University of Queensland (AU)
- Corresponding author
- Schenk, Peer M.
- ORCID
- Schenk, Peer M.
- Venue
- Frontiers in Plant Science
- Publisher
- Frontiers Media SA
- Published
- 2015-05-19
- Volume
- 6
- Pages
- 359-359
- ISSN
- 1664-462X (ISSN-L)
- PMC
- PMC4436584
- OpenAlex
- W1552031058
- Cited by
- 60
- References
- 23
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 7 · 2023: 4 · 2022: 3 · 2021: 10 · 2020: 15 · 2019: 8 · 2018: 2 · 2017: 4 · 2016: 2 · 2015: 1
- FWCI
- 0.89
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Frontiers in Plant Science (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)
- Funders
- Australian Government
- University of Queensland
- Australian Research Council
- 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 › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- microalgae, lipid accumulation, microalgae growth rate, brackish water, seawater, strain screening, fatty acid composition, omega-3 fatty acids, biodiesel feedstock, nutraceuticals, Nitzschia, Cylindrotheca closterium, Tetraselmis, Cymbella, South East Queensland
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