Lipids, Triglycerides and Phosphlipids

Lipids, Triglycerides and Phosphlipids

1. LIPIDS

   • Made up of Carbon, Hydrogen and Oxygen but in much more higher proportions of hydrogen than carbohydrates.
   • The most common lipid is triglyceride
   • At room temperature, fats are soild and oils are liquid.

2. TRIGLYCERIDES

   • 3 fatty acids chains are attached to a glycerol
     • Fatty acids are acids because they contain the -COOH which is a carboxyl group.
   • A glycerol molecule has 3 carbons in which the -OH of the triglyceride attaches to the -H of the glyercol, this reaction is a condensation reaction because it makes 3 waters.
     • The bond between the fatty acid chain and the glycerole molecule is called an ester linkage
   • Insoluble in water because they are hydrophobic, their charge isn't attracted to water

3. SATURATED/UNSATURATED

   • Fatty acids are saturated because they have one single carbon bond
     • These are solid at room temperature.
   • If one or more bonds between the carbon atoms have double bonds, then it is said to be unsaturated
     • Usually liquid at room temperature.

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