lecithin

/les-uh-thin/US // ˈlɛs ə θɪn //UK // (ˈlɛsɪθɪn) //

卵磷脂,卵石粉

Definitions

n.名词 noun

1
- : Biochemistry. any of a group of phospholipids, occurring in animal and plant tissues and egg yolk, composed of units of choline, phosphoric acid, fatty acids, and glycerol.
- : a commercial form of this substance, obtained chiefly from soybeans, corn, and egg yolk, used in foods, cosmetics, and inks.

The glycerophosphoric acid radical is, to be sure, found in the lecithin of nervous tissues, but its source is not known.
Another consideration to bear in mind is that the nerves need fat wherewith to build up the lecithin.
Commercial lecithin preparations are at best very impure substances; all are more or less altered from the original composition.
The following report was sent to the manufacturers of the various lecithin preparations mentioned therein.
Numerous processes have been devised for the preparation of lecithin from egg-yolk or animal tissue.