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Composition and positional distribution of fatty acids in phospholipids isolated from pork muscle tissues
Author(s) -
Kuchmak M.,
Dugan L. R.
Publication year - 1965
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02558253
Subject(s) - lecithin , chemistry , polyunsaturated fatty acid , degree of unsaturation , sphingomyelin , fatty acid , phosphatidylethanolamine , biochemistry , palmitic acid , hydrolysis , stearic acid , saturated fatty acid , chromatography , phosphatidylcholine , phospholipid , organic chemistry , cholesterol , membrane
The composition and positional distribution of fatty acids in phospholipids isolated from four locations of a hog carcass is presented. Variations in fatty acid composition of phospholipids were found depending upon the location in the carcass. The total unsaturated fatty acid content averaged 34.3 mole % for lecithin, 52.5 mole % for phosphatidylethanolamine, 40.3 mole % for phosphatidylserine and 41.3 mole % in sphingomyelin. The cephalins had a much higher percentage of polyunsaturated fatty acids than lecithin. The chief saturated fatty acid in lecithin and sphingomyelin was palmitic and in cephalins it was stearic. A snake venom enzyme preparation (Crotalus adamanteus) hydrolyzed primarily unsaturated fatty acids in phosphoglycerides and the higher the percentage of unsaturation within the fatty acid the higher percentage of hydrolysis occurred. The unsaturated fatty acids were found chiefly at the the ॆ ‐position and the saturated fatty acids at the a ‐position in the phosphoglycerides.