Thursday, July 30, 2015

Vitamins: Fat soluble -2: Sources, Functions, Deficiency etc

FAT SOLUBLE VITAMINS

VITAMIN E & K

Vitamins
Vitamin E
Vitamin K
Other names
Tocopherol, antisterility vitamin, fertility factor, beauty vitamin
3 forms: α, β & γ
Phylloquinone or antihaemerrhagic vitamin
3 forms:
K1 (phylloquinone) K2 (menaquinone) K3 (mandione)
Discovered by
Evans and Sore
Dam and Droisy
Daily requirement
15 mg
0.07-0.14 mg
Sources
Wheat germ, corn, nuts, seeds, olives, spinach, asparagus, leafy vegetables, vegetable oils, and their products, margarine, cotton seed oils
Cabbage, cauliflower, spinach, soyabeans, cereals, liver, egg yolk.
K2 - by intestinal bacteria
K3 - synthetic form.
Functions
Antioxidant and prevents oxidative destruction of other vitamins (E.g. vit.K).
Prevents formation of unsaturated fatty acids so prevents brown pigmentation.
Normal working of gonads.
Normal child birth.
Removes wrinkles of skin, scars.
Formation of prothrombin from liver cells.
Blood coagulation.
Acts as coenzyme Q and participates in ETC.
Deficiency
Sterility
Profuse bleeding (Haemerrhage)
Hypervitaminosis of vitamin A, D, E & K leads to some problems as they are not soluble in water.

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