vitamin d is one of the fat soluble vitamin on which there is great emphasis in the present scenario. it is present in breast milk in very minute amount so it is recommended that it must be supplemented right after birth to prevent it deficiency which in children can result in rickets. if not diagnosed and treated in time it may result in number of bony deformities . in adults besides oesteomalacia it is associated with n umber of non communicable diseases.
vitamin d is one of the fat soluble vitamin on which there is great emphasis in the present scenario. it is present in breast milk in very minute amount so it is recommended that it must be supplemented right after birth to prevent it deficiency which in children can result in rickets. if not diagnosed and treated in time it may result in number of bony deformities . in adults besides oesteomalacia it is associated with n umber of non communicable diseases.
Vitamin a presentation, Vitamin A Deficiency, Vitamin A toxicityDhruvendra Pandey
This presentation contains Importance of vitamin A, Sources of Vitamin A, Absorption,Transport and Excretion of Vitamin A, Vitamin A Deficiency, Vitamin A Toxicity, Required dose of Vitamin A, Nutrition, Nutrition deficiency
Chemistry of Vitamin E, Biochemical role of Vitamin E, Recommended dietary Allowances, Dietary sources of Vitamin E, Deficiency symptoms of vitamin E, Hypervitaminosis of vitamin E, Toxicity of Vitamin E,
Vitamin C introduction, Chemistry of Vitamin C, Biochemical Role of Vitamin C, (Collagen formation, Bone formation, Immunological response, Synthesis of Catacholamines, ), Recommended dietary Allowance of Vitamin C, Dietary Sources of Vitamin C, Deficiency symptoms of Vitamin C, Food preparation to retain Vitamin C.
Vitamin a presentation, Vitamin A Deficiency, Vitamin A toxicityDhruvendra Pandey
This presentation contains Importance of vitamin A, Sources of Vitamin A, Absorption,Transport and Excretion of Vitamin A, Vitamin A Deficiency, Vitamin A Toxicity, Required dose of Vitamin A, Nutrition, Nutrition deficiency
Chemistry of Vitamin E, Biochemical role of Vitamin E, Recommended dietary Allowances, Dietary sources of Vitamin E, Deficiency symptoms of vitamin E, Hypervitaminosis of vitamin E, Toxicity of Vitamin E,
Vitamin C introduction, Chemistry of Vitamin C, Biochemical Role of Vitamin C, (Collagen formation, Bone formation, Immunological response, Synthesis of Catacholamines, ), Recommended dietary Allowance of Vitamin C, Dietary Sources of Vitamin C, Deficiency symptoms of Vitamin C, Food preparation to retain Vitamin C.
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1. Vitamins Compiled and Edited by
Dr. Syed Ismail
Associate Professor, SSAC
VN Marathwada Agricultural University,
Parbhani, Indiavitamins
2. • Organic molecules with a wide variety of functions
• Cofactors for enzymatic reactions
• Essential, supplied in the diet
• Two distinct types: Fat soluble (A, D, E, K)
• Water soluble (B – complex, C)
What are vitamins?
Vitamins are organic molecules that are essential for normal
health and growth. They are required in trace amounts and must
be obtained from the diet because they are not synthesized in the
body. Before vitamins were discovered, it was known that lime
juice prevented the disease scurvy in sailors and that cod liver oil
could prevent rickets. In 1912, scientists found that, in addition to
carbohydrates, fats, and proteins, certain other factors called
vitamins must be obtained from the diet.
3. Why are they good for us?
Greater need due to
worse environment
Improve immunity
Prevent ilnesses
Slower aging
4.
5. Used as cofactors by
many enzymes
Soluble in aqueous
solutions
Not stored in the body
Water-
soluble
vitamins
6.
7. A
K
Are A, D, E, and K.
Soluble in lipids, but not in
aqueous solutions
Important in vision, bone
formation, antioxidants, and
blood clotting
D
E
Stored in the body
Fat-Soluble Vitamins
9. Thiamine (Vitamin B1)
Was the first B vitamin identified.
Is part of the coenzyme thiamine pyrophosphate(TPP).
TPP coenzyme is required by enzymes in the decarboxylation of
-keto carboxylic acids.
Deficiency results in beriberi (fatigue, weight loss, and nerve
degeneration).
10. Influences sacharide metabolism
Helps against tiredness
Is destroyed by severe washings
of rice and vegetables
Severe deficiency leads to beri-
beri
Sources: yeasts, cereals,rice,
liver, legumes
Thiamine
11. Riboflavin (Vitamin B2)
80
30%
55%
Made of the sugar alcohol ribitol and flavin
Part of the coenzymes flavin
adenine dinucleotide (FAD) and flavin mononucleotide (FMN).
Needed for good vision and healthy skin
D. Description of the contents
N
N N
N
HH3C
H3C
CH2 CH CH CH CH2 OH
OHOHOH
O
O
D-Ribitol
12. Sacharide and lipids metabolism
Curing of skin diseases
Support of sight function
Light sensitive
Sources: cerals, eggs, vegetables, dairy products, yeast, liver
13. Niacin (Vitamin B3)
• Is part of the coenzyme
nicotinamide adenine
dinucleotide (NAD+)
involved in oxidation-
reduction reactions.
• Deficiency can result in
dermatitis, muscle
fatigue, and loss of
appetite.
• Is found in meats, rice,
and whole grains.
14. Pantothenic Acid (Vitamin B5)
• Is part of coenzyme A needed for energy production as well as
glucose and cholesterol synthesis.
• Deficiency can result in fatigue, retarded growth and anemia.
• Part of coenzyme A
• Reduces stress, prevents tiredness
• Necessary for formation of glycogen, fatty acids, steroid hormones
• Sources: whole grains, and vegetables ,eggs,liver, heart, yeast
HO CH2 C CH C N CH2 CH2 C OH
O
H
OH OCH3
CH3
15. Pyridoxine (Vitamin B6)
• Pyridoxine and pyridoxal are two forms of vitamin B6,
which are converted to the coenzyme pyridoxal
phosphate (PLP).
• PLP is required in the transamination of amino acids and
decarboxylation of carboxylic acids.
• Deficiency of pyridoxine may lead to dermatitis, fatigue,
and anemia.
16. Pyridoxine
• Aminoacids and protein
metabolism
• Cure of anemy
• Formation of red blood
cells
• Sources: meat, fish,
liver, vegetables, cerals,
yolk, legumes
17. Cobalamin (Vitamin B12)
• Consists of four pyrrole
rings with a Co2+.
• Is a coenzyme for
enzymes that transfer
methyl groups and
produce red blood cells.
• Deficiency can lead to
pernicious anemia and
nerve damage.
18. Cyanocobalamin
• Formation of red
blood cells
• Maintenance of
neuro tissue
• Cure of neuro
diseases, anemia
• Sources: dairy
products, meat,
poultry, sea
products
19. Ascorbic Acid (Vitamin C)
• Is required in collagen
synthesis.
• Deficiency can lead to
weakened connective
tissue, slow-healing
wounds, and anemia.
• Is found in Indian
gooseberries,
blueberries, citrus fruits,
tomatoes, broccoli, red
and green vegetables.
O
CHOH
CH2OH
OHHO
O
21. 21
Vitamin A
• Vitamin A is obtained from meats and
beta-carotenes in plants.
• Beta-carotenes are converted by liver
enzymes to vitamin A (retinol).
H3C CH3
CH3
CH3 CH3
CH3 CH3
H3C CH3
H3C
CH3 CH3
CH2OH
H3C CH3
CH3
Beta-carotene
Retinol (vitamin A)
22. Compiled & Edited by
Dr.Syed Ismail,MAU, Parbhani
2222
Vitamin A and provitaminA
• Retinol
• Cancer cure and prevention
• Skin, eyes, genital glands
• Provitamin changes to A vitamin in
liver
• Sources: liver, egg yolks, dairy
products
• provitamin: carrots, pepper, spinach,
yellow fruits
23.
24. Vitamin D
Vitamin D (D3):
• Is synthesized in skin
exposed to sunlight.
• Regulates the
absorption of
phosphorus and calcium
during bone growth.
• Deficiency can result in
weakened bones.
• Sources include cod
liver oil, egg yolk, and
enriched milk.
25. 25
Vitamin D
• Calciferols
• the sun vitamin (UV rays)
• regulation of calcium metabolism
• sources: yeasts, fish, yolks, dairy products
26. Vitamin E
• Is an antioxidant in cells.
• May prevent the oxidation of
unsaturated fatty acids.
• Is found in vegetable oils, whole grains,
and vegetables.
O
CH3
HO
H3C
CH3
CH3
CH3
CH3 CH3 CH3
28. Vitamin K
• Vitamin K1 in plants has a saturated side
chain.
• Vitamin K2 in animals has a long
unsaturated side chain.
• Vitamin K2 is needed for the synthesis of
zymogens for blood clotting.
3 n
CH3
CH3
O
O CH3 CH3
Vitamin K2 (menaquinone)
CH3
CH3
O
O CH3 CH3
Vitamin K1 (phylloquinone)
29. Compiled & Edited by Dr.Syed
Ismail,MAU, Parbhani
29
Vitamin K
• Blood clotting
• Higher need by newborns, people with
liver diseases, or fat malabsorbtion
• Sources: green fruits and vegetables,
tomatoes, soy, beef liver, yolks, wheat,
butter, cheese
30. Daily values:
Vitamin: Daily values [mg]:
A (retinol) 1-3
B1 (thiamine) 30 - 200
B2 (riboflavin) 25 - 200
B3 (niacin, niacinamid) 30 - 100
B5 (Pantothenic acid) 20 - 500
B6 (pyridoxine) 10 - 15
B12 (Cynocobalamine) 5 - 8
H (Biotin) 300 - 5000
C (Ascorbic acid) 2 - 12 g
D (cholecalciferol) 10
E (tokoferol) 400 - 2000
K 80
