L-α-磷脂酰胆碱

别名

卵磷脂 来源于大豆,大豆卵磷脂,1,2-二酰基-sn-甘油-3-磷酸胆碱,3-sn-磷脂酰胆碱,L-α-卵磷脂,PC,偶氮植物凝血素

测定

≥40% (phosphatidylcholine, TLC)
≥95% (phosphatides (as acetone insolubles))

一般描述

This L-α-phosphatidylcholine is extracted and purified from soybeans. It serves as a substrate for specific phospholipase present in all Listeria monocytogenes and some strains of Listeria ivanovii. If L-α-phosphatidylcholine is used in a solid medium the presence of organisms possessing the specific phospholipase can be detected. The phosphatidylcholine is cleaved which results in a precipitate which can be seen as opaque halo around the colonies.

应用

L-α-Phosphatidylcholine is one of several phospholipids used in membrane research and is often used as a component in liposomal drug delivery systems.
In this case it is added to culture media to differentiate the specific phospholipase producing microorganisms from those that cannot.