vitamin c
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
VITAMIN C L-ascorbic acid, ascorbate Synthesized from glucose by most animals Vitamin C is an electron donor
FUNCTIONS OF VITAMIN CEnhances absorption of iron reduces iron to more absorbable
ferrous form chelates with ferrous ion to make it
more soluble
FUNCTIONS OF VITAMIN C Involved in the biosynthesis of the
protein, collagen, found in connective tissues such as cartilage, ligaments, and tendons
FUNCTIONS OF VITAMIN CBiosynthesis 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
DAILY REQUIREMENTS
Recommended Dietary Allowance
mg per day
adult male 90
adult female 75
Children 4-13 years 25
Tolerable Upper Intake Level(adult male)
2,000 mg per day
Tolerable Upper Intake Level(adult female)
2,000 mg per day
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
poor wound healing Edema (water retention) weakness, a lack of energy poor digestion painful joints bronchial infection and colds .
DEFICIENCY OF VITAMIN C
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.
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