Chapter 9: Fat-soluble Vitamins (Vitamin E)

Question 1

other names:
-tocopherol
-antisterility factor
-antioxidant vitamin

Answer 1

vitamin e

Question 2

vitamin e - chemistry

include alpha, beta, gamma, and delta _____

Answer 2

tocopherols

Question 3

vitamin e - chemistry

contains the unsaturated alpha, beta, gamma, and delta

Answer 3

tocotrienols

Question 4

vitamin e - chemistry

most widespread and biologically active form

Answer 4

alpha tocopherol

Question 5

vitamin e - chemistry

stable in _____ and _____

Answer 5

temp and acids

Question 6

vitamin e - chemistry

oxidized in the presence of _____ or _____ and iron sats

Answer 6

rancid fats or lead

Question 7

vitamin e - chemistry

unstable to _____, ultraviolet light, and oxygen

Answer 7

alkali

Question 8

vitamin e - chemistry

vitamin content of food is expressed as _____, with TE corresponding 1 mg of alpha tocopherol

Answer 8

tocopherol equivalents

Question 9

vitamin e - absorption, transport, and utilization

absorbs _____ of dietary vitamin e

Answer 9

40-60%

Question 10

vitamin e - absorption, transport, and utilization

absorption rate decreases as vitamin consumption _____

Answer 10

increases

Question 11

vitamin e - absorption, transport, and utilization

absorbed from the _____ with the aid of bile salts

Answer 11

gut

Question 12

vitamin e - absorption, transport, and utilization

absorbed from the gut with the aid of

Answer 12

bile salts

Question 13

vitamin e storage in the body

Answer 13

fatty tissue and liver

Question 14

vitamin e - absorption, transport, and utilization

enters the _____ and carried within the chylomicrons

Answer 14

lymphatic system

Question 15

vitamin e - absorption, transport, and utilization

transported by _____ to be stored in the liver

Answer 15

lipoproteins

Question 16

vitamin e - absorption, transport, and utilization

normal plasma tocopherol concentrations are between _____ mg/100Ml; drops rapidly when withdrawn from the diet

Answer 16

0.6 and 1.6 mg

Question 17

vitamin e - absorption, transport, and utilization

excreted in

Answer 17

feces and skin

Question 18

vitamin e - relationship with other nutrients

vitamin e and _____ (a component of glutathione peroxidase) both function to protect the cells from the destructive effects of oxygen free radicals

Answer 18

selenium

Question 19

vitamin e - relationship with other nutrients

vitamin e and the sulfur-containing amino acids, together with _____ (3) are interrelated

Answer 19

zinc, manganese, copper

Question 20

vitamin e - relationship with other nutrients

these amino acids are needed for the synthesis of glutathione that serves as the reducing agent in the glutathione-peroxidase reaction

Answer 20

sulfur-containing amino acids

Question 21

vitamin e - relationship with other nutrients

activate the enzymes important in regulating oxygen radicals

Answer 21

zinc, manganese, copper

Question 22

vitamin e - relationship with other nutrients

when _____ is deficient, vitamin e lowers the rate at which vitamin a is depleted from the liver

Answer 22

vitamin a

Question 23

vitamin e - relationship with other nutrients

requirement for vitamin e increase with increased intake of _____

Answer 23

pufa

Question 24

vitamin e - functions

most important parts of the body which vitamin e exerts its antioxidant effect is in the _____, where the exposure of cells to oxygen is maximal

Answer 24

lungs

Question 25

vitamin e is also a

Answer 25

antioxidant

Question 26

vitamin e - functions

maintenance of _____ by being an antioxidant and a free-radical scavenger; thus, cell membranes are protected against lipid peroxidation

Answer 26

intracellular membrane

Question 27

a substance that prevents the oxidation of other substances

Answer 27

antioxidant

Question 28

vitamin e - functions

prevents vitamin a, carotene, vitamin c, and pufa ffrom?

Answer 28

oxidation

Question 29

vitamin e - deficiency

may interfere with blood clotting action of _____ and may cause hemorrhage

Answer 29

vitamin k

Question 30

vitamin e

plant oils (corn, soy cottonseed, safflower), green and leafy vegetables, whole grain products, liver, eggyolk, nuts, and seeds

Answer 30

food sources of vitamin e

Question 31

vitamin e - recommended intake

safe level of vitamin e intake for adults is _____ mg/day

Answer 31

12 mg/day

Question 31

vitamin e - recommended intake

high intake of pufa means _____ vitamin intake

Answer 31

increased

Question 32

vitamin e - recommended intake

the term “safe” rather than “recommended” is sued since the value is derived from the data for the US population

Answer 32

-

Question 32

major source of fat in the Filipino diet is coconut oil a

Answer 32

medium-chain saturated fat

Question 33

major source of fat in the US is

Answer 33

pufa

Question 34

vitamin e - recommended intake

for adults (19->70 y/o) male and female

Answer 34

10 mg aTE

Question 35

vitamin e - recommended intake

for lactating

Answer 35

10 + 4 mg aTE