Soy bean Phophatidylcholine(PC) is a complex mixture of phosphatidylcholine(PC) and other phospholipids.The content of phosphatidylcholine(PC) is more than 60%. PC is a kind of natural emulsifier that widely used in healthcare food and medicine. PC is recognized as a versatile surfactant for use in medicine. PC also is a consistent source of choline, unsaturated fatty acids, and it is a high quality energy source.