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Vitamin K (napthoquinones)

Vitamin K (napthoquinones). Menaquinone- Bacteria present in the intestine. Phylloquinones- Plant sources e,g, spinach, cabbage. Menadione-synthetic vitamin K. Vitamin K - Napthoquinones. Functions Constituent of prothrombin which is necessary in blood clotting

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Vitamin K (napthoquinones)

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  1. Vitamin K (napthoquinones) • Menaquinone- Bacteria present in the intestine • Phylloquinones- Plant sources e,g, spinach, cabbage • Menadione-synthetic vitamin K

  2. Vitamin K - Napthoquinones Functions • Constituent of prothrombin which is necessary in blood clotting • Helps maintain calcium levels in bones Effects of deficiency • Abnormal clotting, bleeding. • Deficiency is rare

  3. Vitamin K - Napthoquinones Sources Dark green vegetables Liver Lean meat Eggs Manufactured by bacteria in intestine

  4. Vitamin K - Napthoquinones Properties • Fat soluble • Insoluble in water • Stable to heat, unaffected by cooking • Destroyed by light, strong acids, alkalis RDA No definite RDA

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