Lipids Flashcards
T or F. Naturally occurring unsaturated fatty acids have double bonds in cis configuration.
True
T or F. Palmitic acid (16:0) is a fatty acid commonly found in food triglycerides.
True
T or F. modified starches can be used as fat replacers in salad dressings.
True. Cannot be used in fried foods
Fatty acids in food triglycerides are:
an even number of carbons
Triglycerides are made of:
1 glycerol and 3 fatty acids
Phospholipids are made of:
1 glycerol, 2 fatty acids, 1 phosphate, and 1 amino alcohol
Which fatty acid (FA) of listed below is the most suspectible to autoxidation?
a. Saturated FA at sn-2 in a triglyceride
b. Saturated FA at sn-2 in a phospholipid
c. Saturated free FA
d. Polyunsaturated Free FA
e. monounsaturated FA
d. Polyunsaturated Free FA
Phospholipids are
both hydrophilic and hydrophobic
Olestra is what?
a non-digestible fat replacer
If a fatty acid has 18 carbons ad the first double bond occurs at w3, at which carbon (from the omega side) will second double bond occur?
6
In which step of autoxidation reactions of lipids metal ions have a significant role?
initiation
The most stable fat crystals are?
Beta
“o/w” stand for.
Oil is disperse phase in an emulsion and water is continuous phase.
Which of the fatty acids (FA) listed below is the least susceptible to autoxidation?
a. Saturated FA at sn-2 in a triglyceride
b. Saturated FA at sn-2 in a phospholipid
c. Saturated free FA
d. Polyunsaturated Free FA
e. monounsaturated FA
a. Saturated FA at sn-2 in a triglyceride
Which of the following fatty acids will have the highest melting point?
a. Caprylic (8:0)
b. Stearic (18:0)
c. Oleic (18:1c9)
d. Linoleic (18:2c6)
e. Linolenic (18:3c3)
b. Stearic (18:0)
