VITAMIN C
L-ascorbic acid, ascorbate Synthesized from glucose by most animals Vitamin C is an electron donor
FUNCTIONS OF VITAMIN C Enhances
absorption of iron reduces iron to more absorbable ferrous form chelates with ferrous ion to make it more soluble
FUNCTIONS OF VITAMIN C ď Ž
Involved in the biosynthesis of the protein, collagen, found in connective tissues such as cartilage, ligaments, and tendons
FUNCTIONS OF VITAMIN C Biosynthesis
of the catecholamine norepinephrine (neurotransmitter)
Bile
acid synthesis
OTHER FUNCTIONS Promotes the healing of cuts, abrasions and wounds Helps fight infections. Inhibits conversion of irritants in tobacco smoke and certain foods into cancer-causing substances. Appears to dilate blood vessels and thereby lessen the risk of developing high blood pressure and heart disease. Helps regulate cholesterol levels.
FOOD SOURCES OF VITAMIN C Citrus fruits Potatoes Green peppers Cauliflower Broccoli Strawberries Romaine lettuce Spinach
Easily lost through cooking Sensitive to heat Sensitive air
ďƒŞ DAILY REQUIREMENTS Recommended
mg per day
Dietary Allowance adult male
90
adult female
75
Children 4-13 years
25
Tolerable Upper Intake
2,000 mg per day
Tolerable Upper Intake
2,000 mg per day
Level(adult male)
Level(adult female)
DEFICIENCY OF VITAMIN C
When there is a shortage of Vitamin C, various problems can arise like : Scurvy disease ;a disease characterized by weakness, fatigue, anemia, swollen joints, bleeding gums and loose teeth and skin discoloration due to "pinpoint" hemorrhages under the skin and a tendency to bruise easily
DEFICIENCY OF VITAMIN C
poor wound healing Edema (water retention) weakness, a lack of energy poor digestion painful joints bronchial infection and colds .
TOXICITY
Diarrhea nausea skin irritation burning upon urination depletion of the mineral copper. development of kidney stones due to oxalate formation or hemochromatosis or other diseases related to excessive iron accumulation.
Thank you!
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