Chemistry for Biologists: LipidsFats are one of the three main macronutrients , along with carbohydrates and proteins. Examples include cholesterol , phospholipids , and triglycerides. The terms lipid , oil , and fat are often confused. Lipid is the general term, though a lipid is not necessarily a triglyceride. Oil normally refers to a lipid with short or unsaturated fatty acid chains that is liquid at room temperature , while fat in the strict sense specifically refers to lipids that are solids at room temperature — however, fat in the broad sense may be used in food science as a synonym for lipid. Fat is an important foodstuff for many forms of life, and fats serve both structural and metabolic functions.
Digestion, Mobilization, and Transport of Fats - Part I
Lipid , any of a diverse group of organic compounds including fats , oils , hormones , and certain components of membranes that are grouped together because they do not interact appreciably with water. One type of lipid, the triglycerides , is sequestered as fat in adipose cells , which serve as the energy-storage depot for organisms and also provide thermal insulation. Some lipids such as steroid hormones serve as chemical messengers between cells , tissues , and organs , and others communicate signals between biochemical systems within a single cell.
List of unsaturated fatty acids
Chapter 4. Lipids and Fatty Acids 1. Halver University of Washington Seattle, Washington 1. Fats are the fatty acid esters of glycerol and are the primary energy depots of animals. These are used for long-term energy requirements during periods of extensive exercise or during periods of inadequate food and energy intake. Fish have the unique capability of metabolizing these compounds readily and, as a result, can exist for long periods of time under conditions of food deprivation.
Fatty acids — Nomenclature, structure, isolation and structure determination, PDF · Lipids — Nomenclature, structure, biosynthesis, and chemical synthesis.
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Lipid is the collective name for fats, oils, waxes and fat-like molecules such as steroids found in the body. Their roles include:. The basic unit of lipids is a triglyceride, synthesised from glycerol propane-1,2,3-triol and fatty acids. Glycerol is a type of alcohol. Alcohols are organic compounds. Their molecules are characterised by hydroxyl groups , -OH. Glycerol is a trihydric alcohol, which means each molecule has three hydroxyl groups.