PPT-LIPIDS Definition

Lipids are a group of naturally occurring substances include a diverse group of organic compounds including fats oils hormones and certain components of membranes phospholipids All of these substances relatively insoluble in water but soluble in organic solvents like chloroform ether and benzene. Chapter 29. 2. Lipids. are . biomolecules. that are soluble in organic solvents.. The identity of lipids is defined on the basis of a physical property and not by the presence of a particular functional group.. Lipids are non-polar. (hydrophobic) . organic compounds, insoluble in water, . soluble in organic . solvents (ether, acetone, . carbontetrachloride. ). . They contain carbon, hydrogen, and oxygen; sometimes nitrogen and phosphorus. . 3.4 What Are Lipids?. Lipids. are a diverse group of molecules that contain regions composed almost entirely of hydrogen and carbon. All lipids contain large chains of nonpolar hydrocarbons. Most lipids are therefore hydrophobic and water insoluble. Learning Objectives. Learn what a triglyceride is.. Learn what a fatty acid is.. Learn the structure of a . phospholipid. .. Learn how lipids are tested for.. What is a lipid?. Like most other biochemical substances, lipids contain . Pratt & . Cornely. , . Ch. 8. Lipids and Membranes. There is a lot of important biochemistry of lipids.. We won’t cover it all!. The key points for this class have to do with their role in membranes and fat . The anti-inflammatory properties of lipids extracted from Omani camel milk Raya Hamdan Salim Al-Nasseri , M.Sc * Morris Keith , Director of study, Cardiff school of Health Sciences, Cardiff Metropolitan University, Wales, UK. Structures of fatty acids. Hydrogenation. Nomenclature. Essential fatty acids. Agenda. Functions. Long-term ___ storage. Support organs. Insulation. Fat soluble vitamins A, D, E, K. Types. Physical Property. nonpolar. organic compound insoluble in polar solvent , but . soluble in organic solvents. such as benzene ,ether, chloroform.. Biological role of lipids. :. Lipids are found naturally in all living organisms.. What elements are Lipids composed of?. Carbon (C) . Hydrogen (H). Oxygen (O). A whole lot of Hydrogen!!!!!. Function in Living Organisms. Lipids usually serve one of three functions: . 1. Energy storage. Cholesterol. Rich in hydrocarbon. Polar group (usually small). Oleic acid. Lipids serve a wide variety of functions. Vitamin K. Surfactants. Protection. Membrane. components. Insulation. Energy storage. are a diverse group of compounds that are insoluble in water but soluble in organic solvents such as ethanol.. The most common types of lipid are . triglycerides. (sometimes known as true fats or neutral fats), but other important lipids include waxes, steroids and cholesterol.. What are the main classes of . lipids?. Where are they found in the cell?. Where did they come from?. Lipids Classes. Fatty acids. Free (toxic unless esterified). Esterifed. in . glycerophospholipids. Prof. Mamoun Ahram. Resources. This lecture. Lippincott’s Biochemistry, Ch. 15. What are lipids?. Lipids are heterogeneous, hydrophobic, compartmentalized in membranes, as droplets of triacylglycerol (TAG), or in lipoprotein (LP) particles or, or protein-bound. . Examples of Common Lipids. There are many different types of lipids. Examples of common lipids include butter, vegetable oil, cholesterol and other steroids, waxes, phospholipids, and fat-soluble vitamins. The common characteristic of all of these compounds is that they are essentially insoluble in water yet soluble in one or more organic solvents. .