lecithin is also found in the brain and nerve material of animals, in the yolk of egg, and in several plants.
One of the substances contained in bile, lecithin, is of wide importance.
This is clearly shown in the case of lecithin, which serves to control both motion and sensation.
In new-born animals a third or more of this fat consists of lecithin.
These acids are the electrolytic division products of lecithin.
Another consideration to bear in mind is that the nerves need fat wherewith to build up the lecithin.
lecithin is incompatible with alkalies; it should be kept in well-stoppered bottles and should be protected from the light.
The glycerophosphoric acid radical is, to be sure, found in the lecithin of nervous tissues, but its source is not known.
Without the choline, lecithin would be a di-fatty acid derivative of glycero-phosphoric acid.
Numerous processes have been devised for the preparation of lecithin from egg-yolk or animal tissue.
fatty substance found in the yolks of eggs (among other places), 1861, from French lécithine (coined 1850 by N.T. Gobley), from Greek lekithos "egg yolk," + chemical suffix -ine (2). Greek lekithos is of unknown origin.
lecithin lec·i·thin (lěs'ə-thĭn)
Any of a group of phospholipids that on hydrolysis yield two fatty acid molecules and a molecule each of glycerophosphoric acid and choline. They are found in nervous tissue, especially myelin sheaths and egg yolk, and in the plasma membrane of plant and animal cells.
A fatty substance present in most plant and animal tissues that is an important structural part of cell membranes, particularly in nervous tissue. It consists of a mixture of diglycerides of fatty acids (especially linoleic, palmitic, stearic, and oleic acid) linked to a phosphoric acid ester. Lecithin is used commercially in foods, cosmetics, paints, and plastics for its ability to form emulsions.