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Fatty Acids

Fatty acids are carboxylic acids with long hydrocarbon chains. If the hydrocarbon chain in a fatty acid is saturated (no carbon-carbon double bonds), then it is called a saturated fatty acid. If there are (one or more) carbon-carbon double bonds in the hydrocarbon chain of a fatty acid, then it is called an unsaturated fatty acid. As the length of the hydrocarbon chain increases, the lipid solubility of fatty acids increases, and the water solubility decreases. Fats and oils are derivatives of fatty acids.

 

Saturated Fatty Acids

CH3(CH2)12COOH

Myristic acid

CH3(CH2)14COOH

Palmitic acid

CH3(CH2)16COOH

Stearic acid

 

Unsaturated Fatty Acids

H3C(H2C)7HC=CH(CH2)7COOH

Oleic acid

H3C(H2C)4HC=CHCH2CH=CH(CH2)7COOH

Linoleic acid

H3CH2CHC=CHCH2CH=CHCH2CH=CH(CH2)7COOH

Linolenic acid





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