Lipide Distribution in Egg Yolk Lipoprotein Complexes

OSBORNE and Campbell (1900) gave the name lecithovitellin to the lipoprotein that they isolated from egg yolks. Alderton and Fevold (1945) and Fevold and Lausten (1946) separated lecithovitellin into two lipoproteins, lipovitellin and lipovitellenin. Recent investigations by Vandegaer et al., (1956), Martin et al. (1957), Martin and Cook (1958), Joubert and Cook (1958a, b), Turner and Cook (1958), Smith and Turner (1958), Martin et al. (1959), and Sugano (1957, 1958a, b, 1959) have shown the classical lipovitellin and lipovitellenin to be mixtures of proteins. Evans and Bandemer (1957) isolated the lipovitellenin and lipovitellin complexes from eggs without ether treatment and observed that each migrated on paper electrophoresis strips as distinct bands. Extraction of lipovitellenin with ether changed its electrophoretic behavior. Lipids removed from egg lipoprotein by ether extraction have not been considered to be part of the lipoprotein. However, Vandegaer et al. (1956) observed that the stability and solubility of…