PPT-3.4 – Lipids (Fats)

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 . 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.. . 2003-2004. Lipids. 2003-2004. Large biomolecules that are made mostly of carbon and hydrogen with a small amount of oxygen (sometimes Phosphorous).. Lipids . Monomer subunits . Glycerol and 3 fatty acids. 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. 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. . 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: . Fats, Phospholipids, . and Sterols. CHAPTER 5: LIPIDS: OILS, FATS, PHOSPHOLIPIDS, . AND STEROLS. At the end of this chapter, you should be able to:. Discuss benefits and risks associated with dietary . 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. 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.. All fats are not alike. Some types of fats are essential for good health. Other fats can raise blood cholesterol levels or have other negative effects on cardiovascular health. Eating too much fat 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.. Composition - . how fats are made. Classification -. how fats are classified. Sources -. how much we need and where we can get it. Functions - . what they do in our bodies . Omega-3 - . why we need it and where we can get it .