LIFESCI 2N03 Lecture Notes - Lecture 7: Infertility, Atheroma, Osteoporosis
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.