Cited by 22Algal biology and biofuel productionAquaculture Nutrition and GrowthLipid metabolism and biosynthesis

Investigation of Growth, Lipid Productivity, and Fatty Acid Profiles in Marine Bloom-Forming Dinoflagellates as Potential Feedstock for Biodiesel

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Xu, Steven Jingliang, Wu, Kam-Chau, Chan, Sophie Cheuk-Yan, Yau, Yiu-Hung, Chan, Kin-Ka, Lee, Fred Wang-Fat·2020·Journal of Marine Science and Engineering

Abstract

Microalgae-based biodiesel is increasingly recognized as an alternative to crop-based biodiesel. In this study, 10 local strains of dinoflagellates collected from Hong Kong waters, including a monoculture and field sample of Scrippsiella sp. isolated from an algal bloom, were evaluated against the performance of green alga Tetraselmis suecica. The specific growth rate, biomass production, lipid productivity, and fatty acid profile were investigated. The total lipid content of isolated strains ranged from 16.2% to 32.2% of the total dry biomass, whereas palmitic acid (C16:0) and docosahexaenoic acid (DHA, C22:6n3) were dominant in the fatty acid profile. Scrippsiella sp. has a high lipid productivity (47.3 mg/L/day) and fatty acid methyl esters (FAME) content (55.2–73 mg/g dry weight (dw)), which were comparable to that in green alga T. suecica. Further, monoculture and field sampled blooming Scrippsiella sp. showed no significant difference in most parameters, suggesting the possibility of harvesting a natural algal bloom population as a mitigation strategy to harmful algal bloom and to use as biodiesel feedstock. Overall, dinoflagellate species showed a slower growth rate (0.04–0.57 day−1) than most compared species (0.07–1.34 day−1), likely due to a large genome size and low chlorophyll to carbon ratio. Notably, most investigated dinoflagellates were not ideal for mass biodiesel production due to the low growth rate and lipid productivity. However, a high level of polyunsaturated fatty acids (PUFA) in dinoflagellates are prospective for further studies in other biotechnological applications. Though effectively harvesting algal blooming biomass can be complex, it can be further explored as a strategy for algal bloom mitigation and potentially creating values at the advantage of natural bloom when applying harvested biomass for biodiesel and bioactive compounds extraction.

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  • Nitrogen starvation can decrease PUFA production in microalgae, which is valuable for biodiesel production.

    “Simultaneously with an increase in lipid content, nitrogen starvation can decrease PUFA production, which is valuable for biodiesel production [1, 17–19].”

    From Nitrogen and phosphorus stress as a tool to induce lipid production in microalgae (2023) · cites this paper as [19]

    Section 3.5 says nitrogen depletion may influence the unsaturated fatty-acid profile and that a low proportion of PUFA is optimal for biodiesel. It does not say nitrogen starvation decreases PUFA production or simultaneously increases lipid content; its statement about nitrogen depletion is more tentative and less specific. (LLM, conf=0.83)

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Authors
Xu, S. J., Wu, K.-C., Chan, S. C.-Y., Yau, Y.-H., Chan, K.-K., & Lee, F. W.-F.
Affiliations
  • School of Science and Technology, The Open University of Hong Kong, Hong Kong
  • Hong Kong Metropolitan University (HK)
Corresponding author
Lee, Fred Wang-Fat
Venue
Journal of Marine Science and Engineering
Publisher
MDPI AG
Published
2020-05-26
Volume
8
Issue
6
Pages
381
ISSN
2077-1312 (ISSN-L)
OpenAlex
W3029068059
Cited by
22
References
90
Citations by year
2026: 5 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 4 · 2021: 5 · 2020: 1
FWCI
0.54
Type
journal article
Language
en
Open access
Locations
  • Journal of Marine Science and Engineering (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
PACRD, The Open University of Hong Kong (2018/1.9)
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
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
dinoflagellates, Scrippsiella, algal blooms, lipid productivity, fatty acid composition, docosahexaenoic acid, polyunsaturated fatty acids, Tetraselmis suecica, specific growth rate, biodiesel feedstock, Hong Kong waters

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