Lipids Flashcards
Lipids
fatty acids
triglycerides
phospholipids
steroids
Fatty Acids
organic acids containing relatively large numbers of carbons (12-26)
At physiological pH carboxyl group is hydrophilic
aliphatic chain is hydrophobic
poorly soluble in water
most have an even number of carbons
Laurate
12
myristate
14
palmitate, palmitoleate
16
stearate,oleate,linoleate, alpha linoleate
18
Arachidonate and EPA
20
DEA
22
docosahexaenoic acid (omega 3)
EPA
20
Eicosapentaenoic Acid (omega 3)
Saturated fatty acid
carbons linked by single bonds only
Unsaturated fatty acid
double bonds between some of the carbons
monounsaturated and polyunsaturated
cis and trans configurations
Triacylglycerols
triglycerides -storage form of fat
most abundant
contain glycerol and three fatty acids (triesther)
hydrophobic
acyl group
steroids