PPT-Lipids Lipids are hydrophobic or amphiphilic molecules with widely varying structures

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. Dr. Huda Hania. Lipid chemistry . Lipid chemistry . Definition . Fats and Oils (triglyceride) . Waxes. Steroids. Fat- soluble vitamins. Phospholipid. Mono- di glycerides . Lipid compounds including: . long term energy storage. concentrated energy. Lipids . Lipids are composed of C, H, O. long hydrocarbon chains (H-C). . “Family groups”. fats. phospholipids. steroids. Do not form polymers. big molecules. Fats and Oils. Classification of Nutrients. Carbohydrates. Lipids. – . 9 calories per gram. Protein. Vitamins. Minerals. Water. LIPIDS. Most . concentrated. source of food energy. Provide . Nature’s flavor enhancer. lipids vs carbohydrates. - . both . Contain: carbon. , hydrogen, and . oxygen. LIPIDS do not:. dissolve in water. provide structure to food products. lipids. Food Examples: . 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. . properties & interactions. Daley & . Daley. Chapter . 4:. Physical Properties. 4.1 Physical properties of organic molecules. Solids, liquids & gases. Melting point. Boiling point. Lipid chemistry . Lipid chemistry . Definition . Fats and Oils (triglyceride) . Waxes. Steroids. Fat- soluble vitamins. Phospholipid. Mono- di glycerides . Lipid compounds including: . Classification of Lipids. CHAPTER 10. UNIT. TARGETS. DESCRIBE THE MOLECULAR STRUCTURE 3 types of lipids: GLYCERIDES, PHOSHOLIPIDS, AND STEROLS. DEFINE SATURATED, MONOSATURATED AND POLYUNSATURATED FATTY ACIDS.. LIST CATEGORIES OF LIPIDS BASED ON PHYSICAL STATE AND DIETARY SOURCES. Harrison/ . Forensics. All living things contain organic macromolecules: . Lipids. , proteins, carbohydrates and nucleic acids. Characteristic for these organic molecules is that they are made up of only a small number of elements: . 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.. They are insoluble in water and highly soluble in one or more of the following solvents: ether, chloroform, benzene and acetone. . Make up about 5% from organic substances which enter in the structure of living cell .. 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. 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 .