Abstract
Sterols were analyzed from four phytoplankton strains which are under investigation as possible sources of food for oysters in culture. One strain ofPyramimonas contained only 24-methylenecholesterol as a major sterol component.Pyramimonas grossii, Chlorella autotrophica andDunaliella tertiolecta each contained a complex mixture of C28 and C29 sterols with Δ7, Δ5,7 and Δ5,7,9(11) nuclear double bond systems. Sterols were found both with and without the C-22 side chain double bond. Ergosterol and 7-dehydroporiferasterol were the principal sterols in each of the latter three species, which also contained the rare tetraene sterols, 24-methylcholesta-5,7,9(11),22-tetraen-3β-ol and 24-ethylcholesta-5,7,9(11),22-tetraen-3β-ol.
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Abbreviations
- GC:
-
gas chromatography
- GC/MS:
-
gas chromatography/mass spectrometry
- RRT:
-
relative retention time
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Patterson, G.W., Gladu, P.K., Wikfors, G.H. et al. Unusual tetraene sterols in some phytoplankton. Lipids 27, 154–156 (1992). https://doi.org/10.1007/BF02535817
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DOI: https://doi.org/10.1007/BF02535817