Sterols of eustigmatophytes
Abstract
The oyster cannot synthesize sterols from smaller molecules but must obtain them from its diet, which consists of detritus and small organisms, i.e., mostly single-celled algae. Algae differ widely in their effectiveness as oyster food. Small (< 5 microns) algae which are abundant in sterols and polyunsaturated fatty acids appear to be most effective. Recent studies have shown the occurrence of cholesterol in strains of the unicellular algae Tetraselmis, Chaetoceros and Skeletonema, sometimes in large quantities. In the study reported here, six isolates of a recently constructed algal class, the Eustigmatophyceae, have been examined for sterols and fatty acids by gas chromatography and gas chromatography/mass spectrometry. All strains were shown to contain cholesterol as the principal sterol. Two isolates contained large amounts of total sterol (400-1000 fg/cell), and one (Sticho 0-18) also contained large amounts of eicosapentaenoic acid (20:5n-3). These biochemical characteristics are desirable in a potential food source for oysters.
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Microalgae produce a very wide range of phytosterols, including brassicasterol, sitosterol and stigmasterol.
“Microalgae produce a very wide range of phytosterols, including brassicasterol, sitosterol and stigmasterol (Patterson et al., 1994, Marshall et al., 2002, Volkman, 2003).”
From Microalgae Metabolites: A Rich Source for Food and Medicine (2019) · cites this paper as Patterson et al., 1994
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- Authors
- Patterson, G. W., Tsitsa‐Tzardis, E., Wikfors, G. H., Ghosh, P., Smith, B. C., & Gladu, P. K.
- Affiliations
- University of Maryland, College Park (US)
- National and Kapodistrian University of Athens (GR)
- National Oceanic and Atmospheric Administration (US)
- Frostburg State University (US)
- Venue
- Lipids
- Publisher
- Wiley
- Published
- 1994-09
- Volume
- 29
- Issue
- 9
- Pages
- 661-664
- ISSN
- 0024-4201 (ISSN-L)
- 1558-9307
- OpenAlex
- W2076506744
- Cited by
- 29
- References
- 18
- Citations by year
- 2024: 1 · 2023: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 3 · 2014: 2 · 2013: 1 · 2012: 1
- FWCI
- 0.49
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Lipids (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Oceanic and Atmospheric Administration
- Maryland Sea Grant, University of Maryland
- 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 › Molecular Biology › Protist diversity and phylogeny
- Keywords
- sterols, eustigmatophytes, Eustigmatophyceae, cholesterol, eicosapentaenoic acid, fatty acids, oyster nutrition, microalgae, Tetraselmis, Chaetoceros, Skeletonema, sterol content
- MeSH terms
- Animals, Animal Feed, Cholesterol, Fatty Acids, Gas Chromatography-Mass Spectrometry, Ostreidae, Sterols, Eukaryota
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