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Lipids (types (saturated fatty acids (unhealthy), unsaturated fatty acids…
Lipids
types
steroids
phospholipids
triglycerides
saturated fatty acids
unhealthy
unsaturated fatty acids
haalthy
functions
a source od energy
stored in adipose tissues in body as an energy reserve
a major component of cell membranes
involved in transporting and storing fat-soluble vitamins
product sex hormones
composition
made up by
carbon
oxygen
hydrogen
the ratio of hydrogen atoms to oxygen atoms is high than 2:1(carbohydrates and protein)
no general formula
shortage
grow slowly
fat soluble can't be absorb
lose the protect of organ function
sources
e.g.type of triglycerides
they are solid so that called
fats
(in room temperature)
come from animal sources
they are liquid so that called
oils
(in room temperature)
corn oil
olive oil
peanut oil
come from plants and fish
fatty meat,egg yolk,nuts and dairy products
structure
A triglyceride molecule+3 H2O
3 fatty acids molecule+1 glycerol molecule (by condensation-hydrolysis)