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Phosphatidylcholine or Polyenylphosphatidylcholine is a phospholipid that is the major component of a phosphatide fraction, which may be isolated from either egg yolk (in Greek lekithos - λεκιθος) or soy beans from which it is mechanically or chemically extracted using hexane.
It is such a major component of lecithin, that, in some contexts, the terms are sometime used as synonyms. However, lecithin extract consists of a mixture of phosphatidylcholine and other compounds. It is also used along with Sodium taurocholate for simulating fed- and fasted-state biorelevant media in dissolution studies of highly-lipophilic drugs. Phosphatidylcholine is a major constituent of cell membranes.
Some medical researchers are experimenting with using Phosphatidylcholine in a type of injection that will break down fat cells; to be used as an alternative to liposuction known as Injection lipolysis.
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