NUTR 31500 Chapter Notes - Chapter 6: Polyunsaturated Fatty Acid, Trans Fat, High-Density Lipoprotein
6 Feb 2019
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Document Summary
Release of cholecystokinin (cck: stimulates release of bile from gallbladder and lipase and colipase from the pancreas, bile emulsifies fats, breaks into micelles (tiny droplets) Emulsification: increases surface area of lipids. Adds hydrogen to the carbon chain of unsaturated fats. Alpha-linolenic acid and linoleic acid are essential fatty acids. A triglyceride that loses a fatty acid is a diglyceride. Some studies suggest consuming a diet high in trans fats may lead to the development of obesity and type 2 diabetes. Men have a greater chance of having a heart attack. Trans fatty acids from hydrogenated fats have harmful effects associated with increasing blood cholesterol levels and lowering levels of hdl cholesterol. The lipid family includes sterols, phospholipids, and triglycerides. Saturated fatty acid = no carbon-carbon double bond. Monounsaturated fatty acid = one carbon-carbon double bond. Polyunsaturated fatty acid = two or more carbon-carbon double bonds.
