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W6 Lipids - Chapter 6 Lipids LIPIDS NOT JUST FAT...

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LIPIDS: NOT JUST FAT TRIGLYCERIDES (FATS), PHOSPHOLIPIDS AND STEROLS Lipids…. Chapter 6
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Lipids Essential nutrients Provide energy 9 calories/gram Help transport fat- soluble nutrients Vitamins A, D, E, K Contribute to flavor and texture of food Photo © PhotoDisc
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Lipids What are lipids? Triglycerides Stored in adipose tissue Fats and oils in food Phospholipids Plant and animal origin Body can make them Soluble Sterols Cholesterol
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Fatty Acids Are Key Building Blocks Fatty acid Determines solid or liquid Chain length 4 to 24 carbon length
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Fatty Acids Are Key Building Blocks Saturation Saturated fatty acid All single bonds between carbons Monounsaturated fatty acid One carbon carbon double bond Polyunsaturated fatty acid More than one carbon carbon double bond
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Figure 6.03: Fatty acid chain lengths and liquidity.
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Figure 6.05: Liquid or solid at room temperature?
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