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org16 Fatty
acids building units of fats
* Left:
In an earlier experiment you have molten small quantities of spreads
like
butter,
Becel,
dietary magarine
and "Du
darfst". After slidification in syringes:
* Observations
and explanations: 100 g
of these foods contain 20 to 70 g of water.
The lighter fat (as long
as it is liquid it is called "fatty oil") floats on the water. The
water in "Du darfst" keeps solid as it contains gelatine.
midle:
The model of this fat (C35H64O6) was assembled
by connecting 41 black, >64 white and 6 read beads.
Right:
Each fat molecule reacts with 3 water molecules during digestion,
releasing 4 smaller molecules:
1
molecule of glycerol and 3 molecules of fatty
acids.
*
Make your models of a glycerol molecule and of three molecules of fatty
acids by welding 35 black beads, 9 red beads and the necessary number
of white beads.
*
Finally connect these 4 building units to obtain 1 molecule of a fat and
3 water molecules.
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modification: 29.11.2003