HNU 215 Lecture Notes - Lecture 6: Blood Sugar, Cardiovascular Disease, Phospholipid
Document Summary
Triglycerides- have a glycerol chain with three fatty acids attached to it. Saturated fats- carbon atoms are bonded to as many hydrogen atoms as possible. Unsaturated fatty acids- contain one or more carbon-carbon double bonds. Polyunsaturated fatty acids: more than one double bond. Unsaturated fatty acids partially converted to saturated fatty acids: hydro- genation. Some double bonds converted from cis to trans configuration (now more straight: decrease rancidity, increase shelf life. In trans fatty acids, the hydrogens are on the opposite sides of the double bond, making the carbon chain straighter, similar to the shape of a saturated fatty acid. In cis fatty acids, the hydrogens are on the same side of the double bond and cause a bend in the carbon chain. The orientation of the hydrogen atoms around the bond distinguishes cis fat- ty acids from trans fatty acids. Most unsaturated fatty acids found in nature have double bonds in the cis configuration.