Power Point Presentation on Vitamines
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Transcript of Power Point Presentation on Vitamines
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WELCOME
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INTRODUCTION
Vitamins are organic compounds of varying complexity that are indispensable for the organisms.
Some of the Vitamins May be synthesised in the body while others are obtained only through food.
Vitamins are essential nutrients with enzymatic functions
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Nutrients
Nutrients are the components in foods that an organism utilizes to survive and grow
Organic nutrients include carbohydrates. Fats, Proteins, vitamins, minerals, water
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Vitamins
Vitamins are essential nutrients with enzymatic functions
Hopkins was a pioneer in the discovery of vitamins.
Some of the vitamins may be synthesized in the body, while others are obtained only through food.
Vitamins are essential for maintaining good health.
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Types of vitamins
On the basis of their solubility, the vitamins are divided in to two groups,
Fat Soluble Water soluble
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The Vitamins A, D, E and K are fat soluble
They are usually found associated with lipids of the natural food
The vitamins B Complex and C are water soluble.
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Vitamin A
It is also known as Retinol / antixerophthalmic vitamins
This vitamin is necessary for the maintenance of the epithelial cells of the skin, eyes, the digestive tract.
Fish liver oil, egg yolk, milk, cheese etc are the main source of vitamin. A
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Physiological role of vitamin. A
It act as a growth regulator and it is essential for vision
It occurs in the retina of the eye and remains associated with a protein to from a visual purple or rhodopsin, which break down in the physiological process of sight as a result of photo chemical reaction.
It also concerned with the normal development of bones and teeth.
Deficiency diseases : - Xerophthalmia, Nictalopia.
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Vitamin – D
It is also known as antirachitic vitamin or sunshine vitamin.
This is found in abundance in cod-liver oil and other fish oil, in moderate amounts in egg yolk and animal liver and in lesser quantities in milk.
It is manufactured in the skin of mammals under the influence of sunlight, So it is called sun shine Vitamin.
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Physiological role of Vitamin D
It is important in bone and teeth formation
It increase both active as well as passive
Transport of calcium It also increase the volume of gastric
secretion Deficiency disease : - Rickets,
Osteomalacea.
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Vitamin . E
It is also known as Tocopherol
Natural oils Such as wheat germ oil, rice germ oil, leafy green vegetable are the main source of vitamin E.
It also found in meat, egg yolk but in lesser amount.
It is stored mainly in adipose tissue.
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Physiological role of Vitamin. E
This vitamin maintains the normal health of sex organs.
It also plays some role in the metabolism of complex carbohydrate.
It prevent Alzheimer’s disease. Deficiency diseases: sterility,
muscular dystrophy.
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Vitamin K
It is popularly known as coagulation vitamin
All green leafy materials, egg, fish meal are good source of this vitamin.
Chemically, this vitamin is a group of compounds called naphthoquinones.
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Physiological role of vitamin. K
It is an important factor in the process of blood coagulation
It is necessary, for the formation of prothrombin.
Deficiency diseases : - Haemorrhage
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Vitamin. B
Vitamin B is a water soluble vitamin Vitamin is called vitamin B Complex Vitamin Comprises the following
vitamins Vit. B1, Vit B2, Vit B3, Vit B6, Vit B12
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Vitamin B1 (Thiamine)
It is Commonly known as antineuritic Vitamin.
Thiamine is essential in the transmission of nerve impulse.
Liver, kidney, egg yolk are also rich in this vitamin.
Seed coat contain vitamin. B1
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Physiological role of Vitamin B1
Thiamine is necessary for normal uptake of oxygen by the brain tissue.
It helps convert food in to energy needed for healthy skin, hair, muscle etc.
Deficiency disease :- beriberi
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Vitamin B2 (Riboflavin)
It also known as lactolavin
It is widely distributed in nature
Numerous insects require this vitamin
Good sources of this vitamin are liver, milkig, vegilabble.
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Physiological role of vitamin B2
Riboflavin plays an essential rale in the reclase of food energy and the assimilation of nutrients.
It is essential in cell respiration. Deficiency disease: - Cheilosis,
Dermatities.
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Vitamin B3 (Niacin)
It is also known as Nicotinic acid
Niacin is required by bacteria as a growth factory.
Some insects get this vitamin for their intestinal becteria
Yeast, liver, meat, soyabean are the natural source of niacin.
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Physiological role of Niacin
It forms an essential component of NAD and NADP and thus forms Co-enzymes.
As a co-enzyme it is important for fermentation and glycolysis
Deficiency Disease : - Pellagra, Black tongue
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Vitamin B6 (Pyridox in)
Three naturally occurring substances pyridoxine, pyridoxal and pyridoxamine form vitamin B6.
The caecum of the horse also synthesizes it.
Yeast, milk, rice, cereals are the good sources of Vit. B6
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Physiological role of Vitamin B6
It is an important constitute of the enzyme, involved in protein metabolism.
It is used the treatment of tuberculosis
This vitamin is a dietary essential for may protozoa, bacteria etc.
Deficiency diseases : Acrodymia
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Vitamin B9 (Pantothenic Acid)
It forms Part an enzyme system.
It has been known as growth factor for small organism like bacteria, protozoa etc.
Yeast, milk, liver are the good source of this vitamin.
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Physiological role of Vitamin b9
It forms coenzyme A by combining with adenylic acid, and phosphate.
It also involved in the formation of acetylcholine.
Deficiency disease : - Haemorrhage, feet syndrome.
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Vitamin B12 (Cyanobalamine)
It occurs in natural waters
The symbiotic microorganisms of most animals can synthesize this vitamin
Liver, milk, egg yolk are good Sources of B12
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Physiological role of Vitamin B12
It is essentially required for normal formation of Blood.
It also plays a part in purine metabolism.
Vitamin B12 is a growth factor.
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Conclusion
Vitamins are required normally in very small amount but absence of any one in the diet for a long period may cause deficiency diseases.
Thus their absence or deficiency in diet provokes severe metabolic disturbances characterised by specific symptoms.
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Reference
Functional and applied Zoology
P.T.PHILIPLEO Publications
WWW.Google.Com
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