O O R R R R R R C C C C C C + + Glycerol 3Fatty Acids Triglyceride Fig . : Formation of Triglyceride DO YOU KNOW...? » Fats are a concentrated source of energy » Good fats can promote health and bad fats can increase risk of chronic diseases Fig . : Fats and oils Table .
: Difference between Fats and Oils S.no Fats Oils Fat is solid at room temperature Oil is liquid at room temperature Fat is obtained from animals (i.e) butter, ghee, egg yolk ,meat Oils are obtained from plant sources (i.e) mustard oil, groundnut oil, almond oil Fats have only saturated fatty acids Oils have saturated and unsaturated fatty acids . Differences between fats and oils Fats and oils have many types of triglycerides. Nature of fat or oil depends on the type of fatty acids attached to the glycerol molecule. - - Proteins and lipids Waxes: A wax is a simple lipid which is an ester of fatty acids and long chain aliphatic alcohols.
The alcohol may contain - carbon atoms. Waxes are found in nature as coatings on leaves and stems. The wax prevents the plant from losing excessive amounts of water. ) Compound lipids The compound lipids contain, in addition to fatty acids and glycerol,some other organic compounds.
(i) Phospholipids: These contain phosphoric acid and a nitrogenous base in addition to fatty acids and glycerol(e.g.)Lecithin and cephalin. (ii) Glycolipids: Complex lipids containing carbohydrates in combination with fatty acids and glycerol(e.g) Cerebrosides. (iii) Lipoproteins: Lipoproteins are the most important as they are the carriers of lipids in the blood and form cell membranes. ) Derived lipids These are substances liberated during hydrolysis of simple and compound lipids which still retain the properties of lipids.
The important members of this group are sterols, fatty acids and alcohol. (i) Sterols : Sterols are solid alcohols and form esters with fatty acids. In nature they occur in the free state in the form of esters. Based on their origin sterols are classified as cholesterol (animal origin) and