2. Introduction
“Something to make us sick, When we do not eat it”
They are Organic compounds
Plants can synthesis vitamins and animal can synthesis few
Animals obtain vitamins from food stuffs
Man requires 15 vitamin and lesser
Very small quantity of vitamins is needed
It is function like hormones
They cannot provide any energy but it is needed for
physiological activity functioning as catalyst
High Temperature- losing the vitamins
Causing deficiency diseases
Dr. Funk- Introduced the term Vitamins
3. Types of Vitamins
There are two groups - according their
solubility
1. Fat Soluble Vitamins- A, D, E & K
2. Water Soluble Vitamins- B & C
4. VITAMIN – A (Retinol or Antixerophthalmic
Vitamin)
It was discovered by Mc Collum in 1913
Fat Soluble
It is exists two forms- A1 (Retinol 1) and A2
(Retinol 2)
A1- C20 H23 OH and A2- C20 H27 OH
Animal synthesis vitamin A from Carotene-
Provitamin
Carotene splits two molecules of Vitamin A
Sources: Leafy vegetables like amaranth, spinach, coriander,
drumstick leaves, carrots, yellow pumpkins, mangoes, papayas,
tomatoes, fish liver oil, halibut liver oil, milk, butter, ghee, egg, fish
etc.,
5. Functions of Vitamin A
Vitamin A is an important component of
Rhodopsin of retina.
It promotes growth
Protein synthesis
Normal growth and shape of Bones
Essential for the synthesis of
mucoploysaccharides
Promotes fertility
Essential function-Carbohydrate & DNA
metabolism- Normal structure and function of
epithelial tissues
6. Deficiency symptoms of Vitamin A
In children- Retards growth-leads loss of weight
Vision in dim light- rhodopsin pigment in retina of
eye- Night Blindness or Nyctalopia
Xerophthalmia- reddening, dryness, lusterless
conditions of the eye.
Keratomalacia- Cornea becomes soft and
disorganised
Degenerate- Lacrymal gland, Sweat and Sebaceous
glands of Skin
Over dose of Vitamin A- Hypervitaminosis –
Drowsiness, sluggishness, severe headache,
vomitting and peeling of the skin
8. Vitamin D (Calciferol or Antirachitic
Vitamin)
Mc Collum in 1922
It is a steroid compounds
It is formed irradiation of sterols
In skin the large amount of Cholesterol converted
into Vitamin D- Exposure of the skin to sunlight
It exists in five known forms- D1, D2, D3, D4 & D5
Vitamin D2 is of common- Ergocalciferol- C28 H43
OH
D3- Cholecalciferol, D5- Ergosterol
9. Sources of Vitamin D
Fish liver oil
Butter
Milk
Egg
Functions:
It helps calcium absorption in the intestine
It improves absorption of phosphate
It Helps deposition of Calcium and Phosphates in the
bones
Essential- Calcium metabolism, normal development
of bone & teeth
10. Deficiency of Vitamin D
It causes Rickets in child
It causes Osteomalacia in adults
Rickets
It caused by deficiency of Vitamin D for Children
It is characteristic- Soft and Weak bone- Leg bones are
curved and “Bow Shaped” and ribs appearance-
“Pigeon breast”
Antirachiitic vitamin- Vitamin D against rickets
Osteomalacia
Adult ricket, lack of Calcium salts in diet, during
pregnancy and lactation
12. Vitamin E (Tocopherol or
Antisterility)
Matill and Conclin 1920
Fat Soluble
It exists three forms Alpha, Beta and Gamma
Sources: Rich in Wheat, germ oil, cotton seed
oils, liver of hourse and cattle, muscles of heart,
kidney milk, egg-yolk
Man requires 15 to 20 mg/day
Function: it is a antioxidant
Normal reproduction rate and functioning of
muscles
13. Deficiency and symptoms
In man it not known exactly. It may causes
peripheral vascular disorder
Heart disorder
menopause
In female rat the foetus dies sometime
In chick it leads to embryonic moetality
14. Vitamin K (Antihaemorrhagic
vitamin)
Dam 1935
It is essential for coagulation or blood clotting
Sources: Green plants, microbs, Cabbage,
spinach, tomato, soyabean. Also Liver, fish,
milk etc
Functions: Essential for synthesis of
prothrombin in liver- Prothrombin is essential
for blood clotting
Hence it is called Antihaemorrhagic vitamin
15. Deficiency of vitamin K
Blood clotting
Bleeds are stopped within 5-8 min
Loss of cont. Bleeding- victim is dies
16. Vitamin Q
DR. A.J. Quick 1972
Found in Phopholipid extracted from
soyabeans
Essential for blood clot
17. Vitamin U
It isolated from curd
It is essential for people suffers gastritis,
duodenal ulcers
Doubles % of recoveries from gastro intestinal
diseases.