Ascorbic Acid Flashcards
Who/where were four people/places that discovered it? Ascorbic Acid
Hippocrates, British navy, pasteurization, scurvy in guinea pigs
what are its four properties? Ascorbic Acid
acid taste, water soluble; rapidly oxidized by air, light, Cu and alkali; powerful reducing agent
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?
what happens with its function as an antioxidant? Ascorbic Acid
active form is reduced: hydrogens, inactive form is oxidized
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
what happens with its function as a wound healer? Ascorbic Acid
proline and lysine convert to the hydroxy form
what happens with its function in the metabolism of some amino acids? Ascorbic Acid
phenylalanine –> tyrosine
what happens with its function in enhancing iron absorption? Ascorbic Acid
Fe +3 –> Fe +2
how much will double the amount of iron available for absorption? Ascorbic Acid
25 mg
what has the same effect as 1 mg vitamin c? Ascorbic Acid
1 g meat
what happens with its function as a resistor of stress? Ascorbic Acid
its highest in the adrenal gland, hypertrophied in guinea pigs
is it protective against getting a cold? Ascorbic Acid
no
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
what is the deficiency disease called? Ascorbic Acid
scurvy
what are the five greatest food sources? Ascorbic Acid
wild rose hips, sweet pepper, orange, potato, tomato
how much is in wild rose hips? Ascorbic Acid
1000-5000 mg/100g
how much is in sweet peppers? Ascorbic Acid
125 mg/100g
whats the absorption maximum? Ascorbic Acid
200 mg
what’s the recommended daily intake? Ascorbic Acid
M 90 mg; F 75 mg
what group of people need higher daily intakes? Ascorbic Acid
smokers
what happens when mega dosing with it? Ascorbic Acid
diarrhea, kidney stones, latent scurvy
what happens when you get kidney stones by mega dosing? Ascorbic Acid
binds oxalates
is it a trace element, vitamin, or mineral? Ascorbic Acid
vitamin C
