Lipids FW(1) (2) - Chapter-10 LIPIDS Structure and...

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Chapter-10 Structure and properties LIPIDS
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Three major types of lipids 1 Storage of energy 2 Structural 3 Lipids with specific function
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Fatty acids are hydrocarbon derivatives and are precursor for many lipids Fatty acid Saturated fatty acid Unsaturated fatty acid Mono unsaturated Poly unsaturated
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Saturated fatty acid Unsaturated fatty acid General structure of fatty acid
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Unsaturated fatty acid The double bonds are almost always in cis-configuration The double bonds are almost never conjugated General structure of fatty acid
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Separated by methylene group -CH=CH-CH 2 -CH=CH-CH 2 -CH=CH-CH 2 - Conjugated double bond -CH=CH-CH=CH-CH=CH-CH=CH- 9 12 15 Unsaturated fatty acid 9 11 13 10 12 14
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Carbon Skeleton Common Name Melting Point O C Solubility mg/g Water Benzene 12:0 Lauric acid 44.2 0.063 2,600 14:0 Myristic acid 53.9 0.024 874 16:0 Palmitic acid 63.1 0.0083 348 18:0 Stearic acid 69.6 0.0034 124 20:0 Arachidic acid 76.5 24:0 Lignoceric acid 86.0 16:1( 9 ) Palmitoleic acid -0.5 18:1( 9 ) Oleic acid 13.4 18:2( 9,12 ) Linoleic acid -5 18:3( 9,12,15 ) Linolenic acid -11
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