NUTR 3210 Lecture Notes - Lecture 7: Essential Fatty Acid, Solvent, Chloroform
11 Feb 2018
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Document Summary
Soluble in organic solvents: e. g. ether, chloroform, acetone (anything that is soluble in the ether extract or any organic solvent is a lipid) Wide variety of structures and functions: 10 000 different lipid species characterized (using lipid maps) source of energy (get more energy from fat than carbs and protein) Major component of cell and organelle membranes (signaling molecules, structural component of membranes, etc. ) Saturated: maximum # of h atoms, only single bonds (no double bonds at all) Unsaturated: missing h atoms, double bonds, monounsaturated, polyunsaturated, cis or trans configuration. In 1929, george and mildred barr fed rats diets that were completely fat free: resulted in stunted growth, lost fur, inflamed & scaly tails (discovered something in fat that is essential) In 1963, infants were fed diets that differed in fat content. Diets with <0. 1% linoleic acid had poor growth and thickened dry skin (linoleic acid is an essential omega-6 fatty acid!)
