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Purification and characterization of deep sea shark Centrophorus squamosus liver oil 1‐ O ‐aklylglycerol ether lipids
Author(s) -
Bordier Catherine G.,
Sellier Nicole,
Foucault Alain P.,
Le Goffic François
Publication year - 1996
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/bf02522646
Subject(s) - unsaponifiable , chemistry , squalene , chromatography , glycerol , organic chemistry , urea , alcohol
The 1‐ O ‐alkylglycerol composition of the liver oil of the deep sea shark Centrophorus squamosus , a species which provides edible flesh, has been determined. After various fractionations of the oil, the unsaponifiable fraction was characterized by means of gas chromatography/mass spectrometry, electron impact, and positive‐ion chemical ionization. The oil is composed of 60% unsaponifiable matter, containing 45% squalene, 4.5% cholesterol, and 10% of linear saturated and monounsaturated glycerol ethers with 14–18 carbon atoms. After a first separtion by chromatography on silicic acid, monounsaturated glycerol ethers have been separated from the saturated homologues, in particular from 1‐ O ‐octadecylglycerol (batyl alcohol) and 1‐ O ‐hexadecylglycerol (chimyl alcohol) via urea complexation. This newer application of the urea method, already used in the past to extract saturated from polyunsaturated fatty acids, allowed the purification of the main components of the complex unsaturated glycerol ether fraction, namely, 1‐ O ‐octadecen‐9′ylglycerol (selachyl alcohol) and 1‐ O ‐hexadecen‐9′ylglycerol.