LIPIDS Flashcards
FUNCTIONS OF LIPIDS
thermal regulation, protection from mechanical shock, store and furnish chemical energy, store excess calories
Defining parameter
SOLUBILITY
Energy storage lipids
triacylglycerol
Membrane lipids
– sphingoglycolipids, phospholipid, cholesterol
Emulsification lipids
bile acid
Messenger lipids
steroid, eicosanoid
Protective-coating lipids
biological waxes (floor waxes, cosmetic waxes)
- Converted into smaller molecules when hydrolysis occurs. Except cholesterol.
Saponification lipids 125
- Cannot be broken into smaller units since they do not react with water. There is no hydrolysis that results in no smaller units.
Non-saponification lipids 34
Simple lipids
(fats and waxes)
Complex lipids
phospholipids, glycolipids, lipoproteins
CLASSIFICATION BY STRUCTURE
SIMPLE, COMPLEX, STEROIDS, Prostaglandins, thromboxanes, leukotrienes.
Long-chain
(C<12 12-26 insoluble)
Medium-chain
(C8-10)
Short-chain
(C2-6 slightly/ marginally soluble)