HSC2100 Chapter Notes - Chapter 5: Omega-3 Fatty Acid, Palm Kernel Oil, Peanut Oil
Document Summary
Lipids - diverse group of molecules that are insoluble in water. In the body, lipids are stored in adispose tissues that protect and insulate organs, are combined with phosphorous in cell membranes, and occur in steroids in bile salts, sex hormones, and other substances. In foods, lipids occur as both fats & oils. Triglycerides most common fat (95%), consist of 3 fatty acids attached to a 3 carbon glycerol backbone. Fatty acids long chains of carbon atoms bound to a 3 carbon glycerol backbone. Glycerol an alcohol composed of 3 carbon atoms; it is the backbone of a triglyceride mole. Trigs can be classified by chain length, level of saturation (how much hydrogen), and shape. Short chain fatty acids fewer than 6 carbon atoms in length. Important because it can determine the method of digestion/absorption, and affects how trigs are metabolized. Long tailed are more abundant in our diets & take longer.
