MEDI110 Lecture Notes - Lecture 12: Big Fat Lie, Polyunsaturated Fat, Monounsaturated Fat
6 Aug 2018
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Document Summary
Describe digestion, metabolism, and synthesis of fats/lipids and compare with cho. Fats/lipids are: a source of fuel, efficient storage of energy, cell structural components, provide insulation and protection, metabolic precursors, transport fat soluble vitamins, gene regulators, satiety, provide flavour and mouth feel. Body fat: subcutaneous layer of fat held under skin, muscle, transport, visceral surrounds vital organs (associated with increased risk of. Length (short, medium, long) dependent on number of carbons making up a chain: saturated vs. unsaturated. Fatty acid structures: saturated fats all single bonds (therefore is fully saturated with hydrogens, monounsaturated fats 1 double bond, polyunsaturated fats - >1 double bond, contain methyl group and acid group on each end. Polyunsaturated fatty acids: type is determined by location of double bond, omega 3 polyunsaturated fatty acid = double bond occurs after 3 carbons, omega 6 polyunsaturated fatty acid = double bond occurs after 6 carbons. C18:3 18 = no of carbons, 3 = no of double bonds.
