NTDT200 Lecture 5: Chapter 5: The Lipids: Triglycerides, Phospholipids, and Sterols
5 Oct 2016
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Chapter 5: the lipids: triglycerides, phospholipids, and sterols. 5. 1: the chemist"s view of fatty acids and triglycerides. Supply more energy per gram because more carbons and hydrogens. Every triglyceride contains one molecule of glycerol and 3 fatty acids (chains of. Fatty acids may be 4-24 carbons long. Chain of carbon and hydrogen atoms with acid group (cooh) and a methyl group (ch ) . Long-chain fatty acids (12-24 c): meats, seafood, vegetable oils. Saturated fatty acid: fully loaded with all it hydrogen atoms and contains only single bonds between carbon atoms. Point of unsaturation: the double bond of a fatty acid. Unsaturated fatty acid: a fatty acid that lacks hydrogen atoms and has at least one double bond between carbons. Tend to kink at the double bonds. Mono: lacks 2 hydrogen atoms and has 1 double bond between carbons. Poly: lacks 4 or more h and has 2 or more double bonds between carbons.
