MEDI110 Lecture Notes - Lecture 20: Saturated Fat, Methyl Group, Monounsaturated Fat
30 Oct 2018
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Document Summary
Source of fuel, efficient storage of energy, cell structural components, insulation and protection, metabolic precursors, gene regulators. Properties and definitions of fats and lipids. Triglycerides are main form of lipids in food and body. Cholesterol and phospholipids in food and body play important roles. Vary in length, 18 carbon most common in foods, and can be saturated and unsaturated. Carboxylic group on one end and methyl group on other end. Monounsaturated = 1x c=c bonds, polyunsaturated = 2x c=c bonds. We cannot synthesise 2 pufas *polyunsaturated fatty acids , and are essential. 1 tablespoon per day, arachidonic acid can be made from o6. Increase blood clotting and constricting blood vessels increase inflammatory responses. Both needed for immune function, vision, cell membrane, production of hormones. However the body can make all saturated fatty acids with elongase enzymes add 2 carbons to a fatty acid chains to make. Type of lipid different in structure to trigs and phospholipids.
