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13 Cards in this Set
- Front
- Back
Lipids
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- compounds that include triglycerides (fats and oils), phospholipids, and sterols
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Fats
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- lipids that are solid at room temperature
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Oils
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- lipids that are liquid at room temperature
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What are soft fats?(3)
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- fats with:
1 Shorter chains 2 more unsaturated 3 melts readily |
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What are polyunsaturated fats? (4)
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- less stable
- can turn rancid - susceptible to microbial growth - multiple double bonds |
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What are hard fats? (3)
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- saturated, hydrogenated
- more stable - more resistant to oxidation |
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How do you prevent rancidity in lipids?(3)
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- seal air-tight and refrigerate
- add antioxidants - add hydrogen (hydrogenate) |
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What are the roles of fat? (4)
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- NRG
- Nourishes scalp, hair and complexion - Insulates body from temperature extremes - cushions vital organs - phospholipids and sterols maintain structure and health of cells |
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What is a simple lipid? (3)
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- fatty acid esterfied with alcohols
- fats (fatty acids esterfied with glycerol - waxes (sterol esters, Vitamin A and D esters) |
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What is a complex lipid? (4)
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- fatty acids esterfied with alcohols plus other
- phospholipids - glycolipids - lipoproteins |
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What are tryglycerides? (3)
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- three fatty acids
- glycerol backbone - formed via series of condensation reactions |
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What are fatty acids? (2)
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- organic acid
- methyl group at one end, acid at the other end - usually number of carbons - can be either saturated with hydrogens or unsaturated |
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How is fatty acid nomenclature work (the numbers)?
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( # (how many carbons) : #2 (how many double bonds, #3 (where is the first double bond) )
- E.g. (18 :2, 6) |