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Fat Facts

Comparing the Structure and Function of Lipids

By Ling Chen, Lalitha S. Jayant

Fat Facts


 

Abstract

It's Mother's Day and Dolly, a high school senior, is making a Mediterranean salad for her mom, who is a college chemistry major and who likes to take every opportunity to teach Dolly what she has learned in school. Today is no exception, as she guides Dolly through a chemistry lesson in the kitchen. The case compares and contrasts the structures of various fatty acids, saturated with unsaturated, monounsaturated with polyunsaturated, and cis-conformation with trans-conformation. The melting point differences of saturated, monounsaturated, and polyunsaturated fatty acids also are explained as are the structures and functions of triacylglycerol, phospholipid, HDL cholesterol, LDL cholesterol, and omega-3 fatty acids. The case could be used in courses in general chemistry, organic chemistry, biochemistry, nutrition, biology, and food science.

   

Date Posted

06/13/2011

Overview

Objectives

  • Review functional groups: alcohol, carboxylic acid, and ester.
  • Distinguish saturated, monounsaturated, and polyunsaturated fatty acids.
  • Differentiate cis and trans fatty acids.
  • Associate the structures of fatty acids to their melting points.
  • Identify omega-3 fatty acids.
  • Compare structures and functions of triacylglycerol and glycerophospholipid.
  • Compare structure and function differences of HDL and LDL cholesterols.

Keywords

Fat; lipids; fatty acid; triacylglycerol; glycerophospholipid; HDL cholesterol; LDL cholesterol; saturated; unsaturated; monounsaturated; polyunsaturated; cis-arrangement; trans-arrangment; omega-3; melting point

  

Subject Headings

Biochemistry
Biology (General)
Chemistry (General)
Food Science / Technology
Nutrition
Organic Chemistry
Public Health

EDUCATIONAL LEVEL

Undergraduate lower division, Undergraduate upper division

  

FORMAT

PDF

   

TOPICAL AREAS

N/A

   

LANGUAGE

English

   

TYPE/METHODS

Directed, Discussion

 

 

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