LIFESCI 2N03 Study Guide - Chylomicron, Lipoprotein, Cortisol
4 Oct 2014
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Document Summary
Broad range of organic molecules that dissolve easily in organic solvents, but much less soluble in water. Both classifications have different degrees of solubility. Main classes of lipids: triglycerides (also called triacylglyerols, phospholipids, sterols. Largest category, makes up most of the lipids. Makes up approximately 2% of all dietary lipids. Involved in fatty acid transport (forms outer shell of chylomicrons and lipoproteins): sterols. Precurosor to hormones (sex and cortisol), vitamin d, and bile acids. Example: butyric acid (4:0) provides the flavour in butter. Types of fatty acids: saturated, all carbons are single bonded to adjacent carbons or 2 hydrogen atoms, monounsaturated (1 double bond), polyunsaturated fatty acid (pufa) (> 1 double bond): Oleic acid (18:1) olive oil (thick) at room temperature, but may solidify with refrigeration, omega-9 fa. Linoleic acid (18:2) soybean oil, omega-6 and omega-9 fatty acids. Double bonds at 6th and 9th carbons, respectively. Linolenic acid (18:3) flaxseed oil, very thin oil: omega-3, -6, and 9 fatty acid.
