Card 161
Question
How many carbon atoms are there in the fatty acid myristic acid?
Answer
14
Food Chemistry
Discover Food Chemistry: 945 flashcards with questions and answers.
- Subject
- Sciences / Chemistry
- Language of creation
- English
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Cards in this set
Card 162
Question
How many carbons are contained in erucic acid?
Answer
22
Card 163
Question
In kJ per mol, what is the bond dissociation energy of the O-H bond in a water molecule?
Answer
460
Card 164
Question
If the temperature of a solution is -40 F, what will it temperature be in degrees Celsius?
Answer
-40 deg C (-40 is the equivalence point for the 2 temp scales)
Card 165
Question
At what temperature is all detectable water frozen?
Answer
-72F, -60C
Card 166
Question
What does p mean in pH?
Answer
-log
Card 167
Question
What are the stages of lipid oxidation:
Answer
(1) Initiation
(2) Propagation
(3) Termination
Card 168
Question
C18:2n6 represents which fatty acid?
Answer
(Unsaturated FA that has 18C, 2 double bonds, and omega 6) Linoleic Acid
Card 169
Question
C18:3n3 represents which fatty acid?
Answer
(Unsaturated FA that has 18C, 3 double bonds and is an omega 3) a-Linolenic Acid
Card 170
Question
C20:4n6 represents which fatty acid?
Answer
(Unsaturated fatty acid) arachidonic acid (from elongating linoleic acid)
Card 171
Question
C22:6n3 represents which fatty acid?
Answer
(Unsaturated fatty acid) DHA or Docosahexaenoic Acid (from elongating a-linolenic)
Card 172
Question
C20:5n3 represents which fatty acid?
Answer
(Unsaturated fatty acid) EPA or Eicosapentaenoic Acid (from elongating a-linolenic)
Card 173
Question
What colors are anthocyanins at the following pH's? <3.5, 3.5-4.5, >4.5
Answer
<3.5 red; 3.5 - 4.5 purple; >4.5 blue
Card 174
Question
The smoke point temperature for fats is:
Answer
~250-520°F
Card 175
Question
What is the scale for water activity?
Answer
0 – 1.0
Card 176
Question
For water, the effect of increasing coordination number is most noticeable at what temperature range?
Answer
0-4 degrees celsius
Card 177
Question
What water activity value is where monolayer moisture value is present?
Answer
0.25
Card 178
Question
What water activity value is where there is a loss of crispness and onset of caking occurs?
Answer
0.40
Card 179
Question
What water activity value is where mold growth can occur?
Answer
0.6
Card 180
Question
What water activity value is where max rate of quality loss occur?
Answer
0.8
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