Lecithins


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Lecithins

 

esters of choline and of diglyceride phosphoric (phosphatidic) acids, one of the basic fractions of phosphatides. Lecithin molecules are formed from the residues of glycerol, fatty acids (primarily stearic, palmitic, oleic, and linoleic acids), phosphoric acid, and choline.

Lecithins are hygroscopic viscous substances that are readily soluble in alcohols, ethyl ether, and petroleum naptha but insoluble in acetone. They are widely distributed in animal (liver, sperm, blood, cerebral tissue, adrenal glands, egg yolk) and plant organisms (soybeans, sunflower seeds, wheat germ). The principal function of lecithins in organisms is to participate in the formation of biological membranes. A number of synthetic lecithins have also been obtained. Cerebrolecithin, extracted from the cerebrum of cattle, is used in medicine; it is prescribed for internal use in the treatment of diseases of the nervous system, general weakness, and anemia. Lecithins are also used in the food, textile, and cosmetics industries.

References in periodicals archive ?
0% of oil volume, w/v) of a creamy coloured lecithin fraction having an iodine value somewhat higher than that exhibited by the total kernel oil (148.
Content of crude protein, fixed oil and lecithin in Sudanese seed accessions of fenugreek (Trigonella foenumgraecum L.
Lecithin is known to stabilize emulsions and is used in many food and medical products because of its digestibility and biocompatibility for humans.
Since there appeared to be competition for the oil/ water interface between the lecithin and the hydroxypropylcellulose when used together, the authors conclude that "the skill for the technologists consists in the right mixture, as both compounds compete for the same interface.
Sunflowers are readily recognized and accepted by consumers, and as a consequence, SF lecithin gives manufacturers an attractive alternative to soy lecithin, without requiring allergen labelling," said Lorna Macfadyen, confectionery category manager, Cargill Texturizing Solutions, Europe/MiddleEast/Africa.
To help food processors to navigate through the complexities involved in the quality specification of lecithins, Cargill Texturizing Solutions offers its extensive range of lecithins in four main grades: Standard, High, Premium and FQ-MaxX.
It also means food companies worldwide can export products containing Topcithin sunflower lecithin for sale in the growing Japanese market.
This move means that the sales office and administration functions are now located on the same site as the Non-GM Cert ID Soya Lecithin Processing Plant.
Central Soya Stern Lecithin, tel:+45 89 31 2111, fax:+45 89 31 2112, have opened a new Lecithin Application Centre in Aarhus, Denmark.
Lecithin is a term widely used for a complex mixture of phosphatides produced from a variety of animal and vegetable sources.