lipids 2

Question 1

True or false: the number of double bonds are more important than the chain length in determining the melting point of a lipid

Answer 1

true

Question 2

name the three steps of autoxidation?

Answer 2

1. initiation
2. propagation
3. termination

Question 3

name the requirements of the autoxidation

Answer 3

1. presence of a free radical
2. oxygen
3. unsaturated fatty acids

Question 4

what is resonance?

Answer 4

a radical divides itself over the double bond

Question 5

what is termination?

Answer 5

when two radicals react resulting in a non-reactive product

Question 6

name the two types of photo oxidation

Answer 6

o Type I : activated sensitizer reacts with lipid
o Type II : activated sensitizer turns 3O2 into 1O2

Question 7

name three factors that influence fat oxidation

Answer 7

1. fatty acid composition
2. oxygen
3. storing conditions (o2, light, temprerature, surface area, water act (minimal at 0.2-0.4))