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Neutral Lipids, their Fatty Acids, and the Sterols of the Marine Ciliated Protozoon, Parauronema acutum
Author(s) -
SUL DONGGEUN,
KANESHIRO EDNA S.,
JAYASIMHULU KOKA,
ERWIN JOSEPH A.
Publication year - 2000
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.2000.tb00063.x
Subject(s) - desmosterol , campesterol , sterol , fatty acid , cholesterol , biochemistry , polyunsaturated fatty acid , biology , chemistry , chromatography
. The neutral lipids and their fatty acids and the sterol fractions of the marine ciliated protozoon, Parauronema acutum , were characterized. The neutral lipids consisted of triglycerides (30%), sterols (29%), free fatty acids (24%), steryl esters (9%), and diglycerides (8%) and small amounts of fatty alcohols. The fatty acid profiles of these lipids were very similar although quantitative differences were detected. Saturated fatty acids, primarily 14: 0, 16: 0, and 18: 0 constituted 20‐30% of the total. Unsaturated fatty acids containing one to three double bonds, primarily 18: 1(9), 18: 2 (9,12), 18: 3 (9, 12, 15) and 20: 3 (11, 14, 17), constituted 35–50% of the total. Highly unsaturated fatty acids, 18: 4 (6, 9, 12, 15), 20: 5 (5, 8, 11, 14, 17) and 22: 6 (4, 7, 10, 16, 19), constituted 16–25% of the total. The fatty alcohols consisted of 14: 0 (2%), 16: 0 (66%), 18: 0 (3%), 20: 0 (8%), and 22: 0 (21%). The sterols of Parauronema acutum consisted of cholesterol (53%), campesterol (32%), desmosterol (7%), and β‐sitosterol (8%).