PPT-Transfer of Lipids

Mike Clark MD Cholesterol Recommended Daily Diet 45 65 of daily kilocalories Carbohydrates most being complex carbohydrates 20 35 of daily kilocalories from Fats 10 35 of daily kilocalories from . Lipids are….. It can be defined as . nonpolar. organic compound insoluble in polar solvent , but . soluble in organic solvents. such as benzene ,ether, . chloroform.. Biological role of lipids. :. Lipids. Essential . macronutrients. Provide . energy. Building blocks for cell membranes. Form many important hormones. Help transport fat-soluble nutrients. Contribute to flavor and texture of . food. Lipids are relatively insoluble in water.. They are soluble in . nonpolar. solvents such as chloroform , diethyl ether, acetone, benzene and ether.. The hydrophobic (water hating) nature of lipids is due to the predominance of hydrocarbon chain.(-CH2-CH2-CH2-) in their structure. Dr. Huda Hania. Lipid chemistry . Lipid chemistry . Definition . Fats and Oils (triglyceride) . Waxes. Steroids. Fat- soluble vitamins. Phospholipid. Mono- di glycerides . Lipid compounds including: . Fats and Oils. Classification of Nutrients. Carbohydrates. Lipids. – . 9 calories per gram. Protein. Vitamins. Minerals. Water. LIPIDS. Most . concentrated. source of food energy. Provide . Lipid chemistry . Lipid chemistry . Definition . Fats and Oils (triglyceride) . Waxes. Steroids. Fat- soluble vitamins. Phospholipid. Mono- di glycerides . Lipid compounds including: . Classification of Lipids. Lipids are a family of chemical compounds that are a main component in every living cell. They include the following three categories:. Triglycerides. – they include all fats and oils people typically eat.. 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. 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. 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.. 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. . are a large and diverse group of naturally occurring organic compounds that share some general . properties. .. General Properties of Lipids. Insoluble . in water.. Soluble in non-polar organic solvents .