Results 271 to 280 of about 77,382 (289)
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Adsorption of Lecithin by Cholesterol
Journal of Pharmaceutical Sciences, 1980Egg lecithin was adsorbed significantly by cholesterol monohydrate crystals. Adsorption data obtained at initial concentrations of less than 1.1 mM lecithin fitted the Langmuir equation. The calculated adsorption capacity suggested formation of a lecithin bilayer or a mixed bilayer of lecithin and cholesterol. The amount of lecithin adsorbed was highly
Annie Hoelgaard, Sven Frokjaer
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Use of Lecithin and Lecithin Fractions
2007The chapter presents the use of egg lecithin and lecithin fractions: 1. Definition and composition; 2. Processes for isolation, purification, and modifications; 3. Applications.
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Final Report on the Safety Assessment of Lecithin and Hydrogenated Lecithin
International Journal of Toxicology, 2001Lecithin is a naturally occurring mixture of the diglycerides of stearic, palmitic, and oleic acids, linked to the choline ester of phosphoric acid, commonly called phosphatidylcholine. Hydrogenated Lecithin is the product of controlled hydrogenation of Lecithin.
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Lecithin cholesterol acyltransferase
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids, 2000Cholesterol transport in circulation and its removal from tissues depends on the activity of lecithin cholesterol acyltransferase (LCAT). LCAT is a soluble enzyme that converts cholesterol and phosphatidylcholines (lecithins) to cholesteryl esters and lyso-phosphatidylcholines on the surface of high-density lipoproteins.
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Photoreactions of psoralens with lecithins
Journal of Photochemistry and Photobiology B: Biology, 1998The formation of cyclobutane (cb) photoadducts of psoralen with a model lecithin has been shown. The adducts are formed both in ethanol solution and in micellar suspension in water. In spite of their sensitivity to various factors such as light, temperature, air, etc., they are isolated by thin-layer chromatography (TLC) and high-pressure liquid ...
Sergio Caffieri +3 more
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THE PREPARATION OF EGG LECITHIN
Canadian Journal of Research, 1948Lecithin completely free of amino nitrogen and having N/P ratios of 1.00 to 1.01 has been obtained by cooling 10% solutions of mixed egg phospholipides in absolute ethanol to −35 °C. and eliminating the insoluble portions by filtration. These samples of lecithin have been considerably more unsaturated (I.N. 70 to 80) than those prepared by the cadmium
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Journal of the American Oil Chemists' Society, 1976
AbstractLecithins are used in small amounts in many industrial, food, and cosmetic products. Various lecithin products and applications are discussed.
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AbstractLecithins are used in small amounts in many industrial, food, and cosmetic products. Various lecithin products and applications are discussed.
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Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1971
Abstract The plasma enzyme lecithin-cholesterol acyltransferase was shown to be able to utilize lecithin-cholesterol mixed dispersions as substrate for esterification. However, dispersion with a lecithin/cholesterol molar ratio of at least 3 are required for effective esterification of dispersed cholesterol.
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Abstract The plasma enzyme lecithin-cholesterol acyltransferase was shown to be able to utilize lecithin-cholesterol mixed dispersions as substrate for esterification. However, dispersion with a lecithin/cholesterol molar ratio of at least 3 are required for effective esterification of dispersed cholesterol.
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Lecithin in Parkinson’s Disease
1980Pathological and biochemical evidence reviewed favours the hypothesis that the dementia seen in Parkinson's disease, particularly after long-term levodopa therapy, is akin to Alzheimer's disease. We postulate, in late Parkinson's disease, the development of a relative cholinergic deficiency due to the accelerated process of aging and the presence of ...
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Recovery of Lecithin from the Lecithin - Cadmium Chloride Complex
Nature, 1954ALTHOUGH cadmium chloride has been in use at least since 1868 as a precipitant for lecithin, no completely satisfactory method for the removal of cadmium chloride from the complex formed in this manner has been devised. Strecker1 used hydrogen sulphide to precipitate the cadmium. Bergell2, in 1900, made use of ammonium carbonate, and Levene and Simms3,
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