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Phospholipids are a broad category that can be categorized into various types based on their composition, structure, and function.


Based on the glycerol backbone, phospholipids can be categorized as phosphoglycerolipids and sphingolipids. Glycerophospholipids can be further differentiated into phosphatidylcholine,

Based on the glycerol backbone, phospholipids can be categorized as phosphoglycerolipids and sphingolipids. Glycerophospholipids can be further differentiated into phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, phosphatidylglycerol, glycerophosphatidic acid, and so on, according to the polar head group. Of these, phosphatidylcholine, also known as lecithin, is an important component of cell membranes.

Depending on the source, phospholipids can be categorized into animal-derived phospholipids and plant-derived phospholipids. Animal-derived phospholipids are mainly found in animals, such as brain phospholipids; plant-derived phospholipids are mainly found in plants, such as soy phospholipids and grain phospholipids.

According to the different functions, phospholipids can be divided into membrane phospholipids and neurophospholipids. Membrane phospholipids are one of the main components of biological membranes, including glycerophospholipids and sphingomyelin phospholipids, etc. Neurophospholipids are one of the main components of neural cell membranes, including choline sphingomyelin esters and ceramides.

In addition, there are some specific types of phospholipids, such as sphingomyelin, which exists in vertebrate brain and nervous tissue, and can promote the development of the brain and maintain the normal function of the nervous system; neurosphingomyelin contains a large amount of phosphatidylcholine, which is important for the development of the brain's nervous system; and retinal phospholipids are a kind of sheathing protruding material generated by the macula of the retina, and have a normal function and structure of the retina. It promotes the normal function and structure of the retina.