The structures of the principal glycerolipids of pig liver |
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Authors: | M L Hunter W W Christie J H Moore |
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Affiliation: | (1) Hannah Research Institute, Ayr, Scotland |
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Abstract: | The lipid composition of pig liver has been determined. The principal glycerolipids, i.e., triglycerides, phosphatdyl choline,
phosphatidyl ethanolamine and phosphatidyl inositol, were isolated and the positional distribution of fatty acids in each
determined by stereospecific analysis procedures. Previous results for the triglycerides were confirmed, while the phospholipids
were similar in structure to those found in most other animal livers. The triglycerides were separated into simpler molecular
species by combinations of silver nitrate thin layer chromatography and high temperature gas liquid chromatography, but the
proportions found did not agree well with those calculated assuming a 1-random, 2-random, 3-random arrangement. The phospholipids
were hydrolyzed with phospholipase C and converted to diglyceride acetates that were fractionated into simpler molecular species
by the same procedures as were used with triglycerides. Highly specific fatty acid combinations were found in molecular species,
and these specificities were very similar to those reported in similar lipids from the livers of such disparate species as
the rat and chicken. |
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