E Chemical Compo 4

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Information about E Chemical Compo 4

Published on March 4, 2008

Author: Megane

Source: authorstream.com

4. Vitamins:  4. Vitamins Characteristics Organic substances Plants can produce all their vitamins but animals cannot (except vitamins D and K) Only small amount is required Act as co-factors of enzymes Deficiency results in illness (deficiency diseases No energy value Vitamins B and C are water-soluble and are more easily destroyed by heat Vitamins A, D, E and K are fat-soluble and are more heat resistant Slide2:  Vitamin A Functions Forming visual pigment in rod cells of eye Keeping mucous membrane healthy Deficiency diseases Night-blindness Low resistance to infection Main sources Fish liver oils, milk, egg yolk, butter, green vegetables and carrots Slide3:  Vitamin B1 Function As co-enzymes in carbohydrate metabolism Deficiency disease Beri-beri (muscular wasting and nervous disorder) Main sources Cereal grains, yeast, milk and meat Slide4:  Vitamin B2 Function Keeping skin healthy Deficiency disease Dermatitis (inflammation of skin) Main sources Milk, meat, liver and green vegetables Slide5:  Vitamin C Function Keeping the connective tissues and blood vessels healthy Deficiency disease Scurvy (bleeding gum, bruised skin and slow healing of wound) Main sources Fresh citrus fruits and vegetable Slide6:  Vitamin D Function Regulating the absorption and metabolism of calcium and phosphate Deficiency disease Rickets (soft bones and enlarged joints) Main sources Fish liver oils, milk, butter, eggs and fish Slide7:  Vitamin K Function For normal blood clotting Deficiency disease Haemorrhage (blood fails to clot) Main sources Liver, green vegetables and tomato

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