Show the structure of glyceryl trioleate, a fat molecule composed of glycerol and three oleic acid units.

Name: Chemistry
Author: McMurry
ISBN: 9781292336145

검증된 단계별 안내

Step 1: Understand the components of glyceryl trioleate. It is composed of a glycerol backbone and three oleic acid molecules.

Step 2: Draw the glycerol backbone. Glycerol is a three-carbon molecule with hydroxyl (OH) groups attached to each carbon: HO-CH2-CH(OH)-CH2-OH.

Step 3: Recognize the structure of oleic acid. Oleic acid is a monounsaturated fatty acid with the formula C18H34O2, featuring a cis double bond between the 9th and 10th carbon atoms.

Step 4: Attach each oleic acid to the glycerol backbone via esterification. This involves forming an ester bond between the hydroxyl group of glycerol and the carboxyl group of oleic acid, releasing water (H2O) in the process.

Step 5: Illustrate the complete structure of glyceryl trioleate. The glycerol backbone is now linked to three oleic acid chains through ester bonds, forming a triester, which is a common structure for fats and oils.

주요 개념

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Glycerol Structure

Glycerol is a simple polyol compound with three hydroxyl (-OH) groups, making it a trihydroxy alcohol. Its structure consists of a three-carbon chain, where each carbon is bonded to a hydroxyl group. This unique structure allows glycerol to act as a backbone for triglycerides, facilitating the formation of ester bonds with fatty acids.

Fatty Acids

Fatty acids are long hydrocarbon chains with a carboxylic acid group (-COOH) at one end. They can be saturated or unsaturated, depending on the presence of double bonds between carbon atoms. Oleic acid, specifically, is a monounsaturated fatty acid with one double bond, which influences the physical properties of fats, such as melting point and fluidity.

Triglyceride Formation

Triglycerides are formed through a condensation reaction between glycerol and three fatty acid molecules, resulting in the release of water. Each fatty acid forms an ester bond with one of the hydroxyl groups of glycerol, creating a fat molecule. Glyceryl trioleate, specifically, consists of glycerol esterified with three oleic acid units, making it a common dietary fat.