* Glycerol: A three-carbon alcohol molecule with a hydroxyl group (-OH) attached to each carbon atom.
* Fatty acids: Long chains of carbon atoms with a carboxyl group (-COOH) at one end.
* Ester bonds: The chemical bonds that connect the glycerol molecule to the fatty acid molecules.
How they are formed:
1. Esterification: A glycerol molecule reacts with three fatty acid molecules, forming three ester bonds. This process releases water molecules.
2. Triglyceride formation: The resulting molecule is a triglyceride, a fat molecule.
Types of Fatty Acids:
* Saturated fatty acids: All carbon atoms in the chain are linked by single bonds. They are typically solid at room temperature (e.g., butter, lard).
* Unsaturated fatty acids: Contain one or more double bonds between carbon atoms. They are typically liquid at room temperature (e.g., olive oil, vegetable oil).
* Monounsaturated fatty acids: Contain one double bond.
* Polyunsaturated fatty acids: Contain two or more double bonds.
Key points:
* The chemical structure of the fatty acids determines the properties of the fat.
* Fats are essential for various bodily functions, such as energy storage, insulation, and hormone production.
* Different types of fats have different health implications.
