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Вы можете ознакомиться и скачать презентацию на тему Vitamins. Classification. Доклад-сообщение содержит 18 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Mypresentation Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

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VITAMINS

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Vitamins They are regulator moleculas. They regulate normal growth and development. Vitamin A regulates normal eye function, vitamin D regulates normal growth of bone , and vitamin C is needed for immunity or body defense. They do not provide energy.

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CLASSIFICATION

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VITAMIN A Vitamin A consists of three biologically active molecules, retinol, retinal and retinoic acid Retinol - “sticky” and light sensitive Provitamin A carotenoids – converted to retinol by the body ex- Beta (b)-carotene

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Sources milk, cheese, cream, liver, kidney, cod and halibut fish oil milk, Beta carotene - carrots, pumpkin, sweet potatoes, winter squashes, cantaloupe, pink grapefruit, apricots, broccoli, spinach and most dark green leafy vegetables

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Night Blindness,Xeropthalmia Night Blindness,Xeropthalmia infectious disease – Diarrhea, respiratory diseases

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VITAMIN B THIAMIN B1 RIBOFLAVIN B2 NIACIN B3 PANTOTHENIC ACID B5 VITAMIN B6

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VITAMIN D synthesized only when exposed to sunshine. Converted to active form, 1a,25-dihydroxyvitamin D The 1a,25-dihydroxyvitamin D acts as a hormone, and has a specific nuclear receptor

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SOURCES Sunlight(primary) Milk Products:cheese, Butter, Margarine, Cream, Fortified Milk Sea Foods :Fish oil Egg yolk.

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VITAMIN K The K vitamins exist naturally as K1 (phylloquinone) in green vegetables K2 (menaquinone) produced by intestinal bacteria K3 is synthetic menadione.

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SOURCE Spinach, cauliflower and other green leafy vegetables chief source of vitamin K is synthesis by bacteria in the large intestine

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DEFICIENCIES Liver disease Poisoning with vitamin K antagonists Hemorrhagic disease of the newborn results from vitamin K deficiency in human infants Increased risk of fractures or reduced bone density may result from inadequate intake of vitamin K

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VITAMIN E Describes a family of 8 alpha, beta, gamma, delta and 4 tocotrienols Alpha tocopherol is the only vitamin E that is actively maintained in human body found in tissues and blood Maintains integrity of cell membrane and protects fats from oxidation

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VITAMIN E SOURCES: Vegetable oils, nuts, egg yolk, Parmesan, chickpeas, wheat germ, oatmeal, olives,carrots, parsnips, red peppers, green leafy vegetables, sweet potatoes, tomatoes, sweet corn

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VITAMIN C derived from glucose via the uronic acid pathway extracted from plant sources such as rose hips, blackcurrants or citrus fruits easily oxidised in air

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SOURCES Broccoli, Brussels sprouts, cauliflower, cabbage, mange tout, green leafy vegetables, red peppers, chilies, watercress, parsley, blackcurrants, strawberries, kiwi fruit, guavas, citrus fruit.

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VITAMIN C FUNCTIONS: synthesis of collagen, neurotransmitter, norepinephrine protects indispensable molecules regenerate other antioxidants such as vitamin E DEFICIENCY: Scurvy

Теги Vitamins Classification

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