Study Set Content:
e triglycerides (also known as
triacylglycerol
triesters of glycerol and long-chain carboxylic acids called fatty acids
Triglycerides:
made up of an alcohol part and an acid part
Esters
The alcohol part of a triglyceride is always
Glycerol
They are the main storage form of fatty acids
TRIGLYCERIDES
• The acid component of a triglyceride may be any number of
Fatty acids
Fatty acids are practically
unbranched carboxylic acids
– Range in size from
10-20 carbons
triglycerides contain
even number of carbon atoms
Apart from the – COOH group, they have
no functional groups
Apart from the – COOH group, they have no functional groups, except that some do have
double bonds
– In most fatty acids that have double bonds, the what isomer predominates
cis
The hydrophobic character of triglycerides is caused by the
long hydrocarbon chains;
the ester group, although polar, are buried in the
nonpolar environment
The hydrophobic character of triglycerides is caused by the long hydrocarbon chains; the ester group, although polar, are buried in the nonpolar environment, which makes the triglycerides
insoluble in water
Only even-numbered acids are found in triglycerides because the body builds these acids entirely from
acetate units
is a 2-carbon molecule)
acetate
: Is the conversion of oils industrially into solid fats
Hydrogenation
It is development of bad odor and taste due to exposure of fat to atmospheric oxygen for a long time
Rancidity
Hydrolysis of fat with alkali e.g NaOH or KOH lead to formation of salts of FAs and glycerol (soap)
Saponification
