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Sterols, aliphatic hydrocarbons, and fatty acids of a nonphotosynthetic diatom, Nitzschia alba
Author(s) -
Tornabene T. G.,
Kates M.,
Volcani B. E.
Publication year - 1974
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02532206
Subject(s) - unsaponifiable , diatom , sterol , chemistry , nitzschia , botany , organic chemistry , chromatography , biology , biochemistry , cholesterol , phytoplankton , nutrient
The unsaponifiable lipids and total fatty acids of a nonphotosynthetic diatom, Nitzschia alba , have been examined. The major fatty acids were found to be 14∶0, 16∶0, 18∶1, and 20∶5; small amounts of 15∶0, 16∶1, 18∶0, 18∶2, 18∶3, and 20∶4 acids also were present. The unsaponifiable lipids consisted mostly of sterols, with only traces (<0.1%) of hydrocarbons (chiefly C 16 , C 18 , and C 28 normal olefins). The sterols contained brassicasterol (major) and clionasterol (minor), as well as traces of an unidentified sterol; clionasterol was present only in glycosidically bound form.