Abstract

Choline phosphatides and ethanolamine phosphatides as well as neutral alkoxylipids and triglycerides were isolated from a lipid extract of bovine heart muscle. The constituent alk- i-enyl glycerol ethers, alkyl glycerol ethers and fatty acids of these lipid classes were analyzed after selective acidic or enzymatic hydrolysis. Comparative analyses of the aliphatic moieties at the 1 and 2 positions of the phosphatides revealed a pronounced similarity of the three classes of choline phosphatides, whereas significant differences between the various ethanolamine phosphatides were encountered. Alk- i-enyl diglycerides and alkyl diglycerides differed in the composition of their aliphatic moieties from each other, from the triglycerides and from the phosphatides.

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