NUTR 200 Lecture Notes - Lecture 5: Inflammation, Insulin, Wateraid
27 Feb 2017
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Document Summary
Essential to many body functions: cell membrane structure, nerve cell transmissions, protection of internal organs. Fat soluble vitamins: vitamin a, d, e, k, required for their absorption and transport. Makes us feel satiated longer to digest. Lipids = fats; diverse class of hydrophobic molecules (insoluble in water) 3 types found in body cells and tissues: triglycerides 3 fatty acids bound to a 3 carbon molecule, phospholipids 2 fatty acids and a phosphate group bound to a 3 carbon molecule, sterols. Classified by length, level of saturation, shape. Saturation no double bonds: short 4-8, medium 8-12, long more than 12, determines lipid digestion, absorption, metabolism, most naturally occurring fatty acids have even chain lengths. Saturation no double bonds (maximum hydrogen atoms: found commonly in meats, tropical oils. Monounsaturated one double bond: commonly found in olive, peanut, canola oils. Polyunsaturated multiple bonds: two or more double bonds, found in safflower, coin, sunflower, nuts, some vegetable oils.
