PPT-Lipids/Fats Chapter 16 What are 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. 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. Trans fat (also known as partially hydrogenated oil) is a type of man-made fat that helps certain foods stay fresh on the shelf longer and taste better.  They can be found in food products we eat on a daily basis.. 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. . 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. 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 . 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 . Differences in fats . Unsaturated Fat. Unsaturated- preferred type of fat in diet. 2/3’s of fat in diet.. Liquid at room temperature. Two type of unsaturated fats. Dependent on how cool it can get before it becomes solid. One of a group of compounds, including fats, phospholipids & steroids, that mix poor, if at all, with water . What are lipids?. Provides essential fatty acids-which your body cannot manufacture. Maintenance of healthy skin. 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. 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 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.. 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 . Unsaturated Fats . Trans Fats . Fats. Help the body absorb vitamins A, D, E, and K. Serve as an energy reserve. Cushion and protect the heart and other vital organs. Protect bones from injury. Provide insulation and warmth.