NTDT200 Chapter Notes - Chapter 5: Methyl Group, Monounsaturated Fat, Glycerol
25 Jan 2017
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Document Summary
Lipids includes triglycerides, phospholipids and steroids; insoluble in water. Triglycerides 3 fatty acids and 1 molecule of glycerol, most common lipid in food (fat store that gives us energy, protection and insulation) Fatty acids chain of carbon & hydrogen atoms with acid group at one end and methyl group at the other; 4 to 24c long (18c is most common) Unsaturated fatty acid lacks hydrogen atoms and has at least 1 double bond b/w carbons. Saturated fatty acid carries max # of hydrogen atoms, no carbon to carbon double bonds. Polyunsaturated fatty acids omega-3 and omega-6; members of longer-chain fatty acids that help regulate blood pressure, blood clotting, and other bodily functions. Point of saturation double bond of fatty acid where hydrogen atoms can easily be added to the structure. Essential fatty acids body requires them but cannot make them, so must be obtained from diet (linolenic and linoleic) Linolenic fatty acid with 18c and 3 double bonds.
