In the mucosal cells, the total long-chain fatty acids are absorbed and are converted to triacylglycerols. Free fatty acids are very quickly removed and oxidized from blood to become triacylglycerols in tissues. The important lipids in the food are triacylglycerols and after triacylglycerols, phospholipids take the next place, fat soluble vitamins absorption is deteriorated on a diet of very low fat. The below diagram explains about the classification of lipids: Precursor and derived lipids: this type of lipids contains fatty acids, steroids, glycerol, fatty aldehydes, ketone bodies, other alcohols, hydrocarbons, hormones, and lipid-soluble vitamins. Other complex lipids: the lipids like lipoproteins, sulfolipids, and amino lipids can be placed in this type of lipids.Glycolipids: the glycolipids are also called as glycosphingolipids and they have fatty acid, carbohydrate, and sphingosine.Phospholipids: these are the lipids that have fatty acid, phosphoric acid residue, and alcohol.Waxes: these are also the esters of fatty acids with more molecular weight.Ĭomplex lipids: complex lipids are the esters of fatty acids which have groups in addition to fatty acid and an alcohol.Fats: they are the esters of fatty acids with glycerol and oils are a type of fat that is in the state of liquid.Simple lipids: Simple lipids are the esters of fatty acids with several alcohols. The lipids are classified as two types and they are as below: Vital biomedical fields like diabetes mellitus, obesity and atherosclerosis can be understood with the knowledge of lipids. The vital cellular constituents are lipoproteins which are combinations of proteins and lipids. They are considered as a vital constituent of diet not only because of more energy value but also due to the fatty acids present in the fat of natural food. Similar to ether and chloroform, lipids have the usual property of being soluble in nonpolar solvents and insoluble in water. Fatty acids are vital constituents of all these lipids and there are two important varieties of fatty acids and they are as follows: Lipids furnish energy for life and there are many lipids which are important to life, including fatty acids, steroids, triglycerides, glycerophospholipids, and sphingolipids.