. Egg and soy lecithins are commonly used in the food industry as emulsi®ers (E322). The possibility of residual proteins leads to suspicion of their role in allergic manifestations in subjects allergic to egg or soy. Two cases are reported in which the double-blind, placebo-controlled oral challenge (DBPCOC), the ``gold standard'' of diagnosis, led to con®rmation that lecithin had caused lesio...

Three fluorescent dyes (a merocyanin, a cyanin and a modified umbeliferon) have been incorporated into vesicles from three different lecithins. Their absorption spectrum, emission spectrum and fluorescence polarization in the lipid vesicles has been studied and compared with the spectral properties in homogeneous organic solutions. The reactivity of lipid bound dyes with reagents in the aqueous...

Hanahan and Jayko (1952) isolated a pure individual unsaturated lecithin, L-ox-(dipalmitoleyI)lecithin, from fresh baker's yeast by adsorption on alumina. They showed that hydrogenation of this material produced the corresponding saturated lecithin which was identical with the synthetic L-oc-(dipalmitoyl)-lecithin of Baer and Maurukas (1952). The latter compound, when used in combination with c...

The fatty acid composition of the lecithins, phosphatidyl serines, phosphatidyl ethanolamines, ceramides, and sphingomyelins of normal and hyperplastic mouse epidermis, squamous cell carcinomas of mice, and tissue-culture-grown squamous cell carcinoma cells of man was determined by gas chromatography. The degree of saturation of the fatty acids of the lecithins, phosphatidyl ethanolamines, and ...

The lecithin which is used in cardiolipin antigens for the sero-diagnosis of syphilis is extracted from beef heart tissue or egg yolk by the methods of Pangborn, Maltaner, Tompkins, Beecher, Thompson, and Flynn (1951). The product is actually a mixture of individual lecithins containing chiefly unsaturated but also some saturated fatty acids, the composition varying with the source and method o...

The fatty acid composition of the lecithins, phosphatidyl serines, phosphatidyl ethanolamines, ceramides, and sphingomyelins of normal and hyperplastic mouse epidermis, squamous cell carcinomas of mice, and tissue-culture-grown squamous cell carcinoma cells of man was determined by gas chromatography. The degree of saturation of the fatty acids of the lecithins, phosphatidyl ethanolamines, and ...