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The steryl ester and phospholipid fatty acids of the sponge Agelas conifera from the Colombian Caribbean
Author(s) -
Duque Carmenza,
Cepeda Nestor,
Martínez Alejandro
Publication year - 1993
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/bf02536002
Subject(s) - phosphatidylethanolamine , phospholipid , phosphatidylcholine , phosphatidylserine , chemistry , chromatography , phosphatidylinositol , biochemistry , membrane , kinase
The steryl ester and phospholipid fractions of the marine sponge Agelas conifera were isolated and analyzed. The fatty acyl components of the steryl ester and phospholipid fractions as determined by gas chromatography and gas chromatography/mass spectrometry were very similar and consisted of 56.8 and 62.7% of C 14 −C 20 acids (normal; branched, especially iso and anteiso ; and monounsaturated, particularly Δ 9 and Δ 11 acids) and of 43.1 and 35.5% of C 24 −C 26 acids (Δ 5,9 diunsaturated acids), respectively. The major constituent fatty acids detected were 13‐methyltetradecanoic, n ‐hexadecanoic, 10‐methylhexadecanoic, 11‐octadecenoic, 12‐methyloctadecanoic, 5,9‐pentacosadienoic and 5,9‐hexacosadienoic acids. The phospholipids isolated were identified as phosphatidylcholine (37%), phosphatidylserine (34%), phosphatidylethanolamine (16%) and phosphatidylinositol (11%). The distribution of fatty acids within the phospholipid classes was also determined.