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Flashcards in Ascorbic Acid Deck (23):
1

Who/where were four people/places that discovered it? Ascorbic Acid

Hippocrates, British navy, pasteurization, scurvy in guinea pigs

2

what are its four properties? Ascorbic Acid

acid taste, water soluble; rapidly oxidized by air, light, Cu and alkali; powerful reducing agent

3

what are its seven functions? Ascorbic Acid

antioxidant, hydroxylator, wound healing, metabolism of some amino acids, iron absorption, resistance to infection/stress, protective of cancer?

4

what happens with its function as an antioxidant? Ascorbic Acid

active form is reduced: hydrogens, inactive form is oxidized

5

what happens with its function as a hydroxylator? Ascorbic Acid

proline and lysine (collagen) convert to the hydroxy form in collagen and bone; phenylalanine --> tyrosine

6

what happens with its function as a wound healer? Ascorbic Acid

proline and lysine convert to the hydroxy form

7

what happens with its function in the metabolism of some amino acids? Ascorbic Acid

phenylalanine --> tyrosine

8

what happens with its function in enhancing iron absorption? Ascorbic Acid

Fe +3 --> Fe +2

9

how much will double the amount of iron available for absorption? Ascorbic Acid

25 mg

10

what has the same effect as 1 mg vitamin c? Ascorbic Acid

1 g meat

11

what happens with its function as a resistor of stress? Ascorbic Acid

its highest in the adrenal gland, hypertrophied in guinea pigs

12

is it protective against getting a cold? Ascorbic Acid

no

13

what were the results of a toronto study? Ascorbic Acid

no effect on number of colds but fewer days with severe symptoms, its an anti-histamine

14

what is the deficiency disease called? Ascorbic Acid

scurvy

15

what are the five greatest food sources? Ascorbic Acid

wild rose hips, sweet pepper, orange, potato, tomato

16

how much is in wild rose hips? Ascorbic Acid

1000-5000 mg/100g

17

how much is in sweet peppers? Ascorbic Acid

125 mg/100g

18

whats the absorption maximum? Ascorbic Acid

200 mg

19

what's the recommended daily intake? Ascorbic Acid

M 90 mg; F 75 mg

20

what group of people need higher daily intakes? Ascorbic Acid

smokers

21

what happens when mega dosing with it? Ascorbic Acid

diarrhea, kidney stones, latent scurvy

22

what happens when you get kidney stones by mega dosing? Ascorbic Acid

binds oxalates

23

is it a trace element, vitamin, or mineral? Ascorbic Acid

vitamin C