Vitamin C mindmap

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  • Vitamin C
    • Sources :        Blackcurrants citrus fruits       Berries       Dark green             veg          Carrots
      • Potatoes contain some Vitamin C and are important in the British diet
    • Functions
      • Needed to make collagen (protein)
      • Aids the absorption of non-haem iron to protect against amaemia
      • Antioxidant- protects against CVD and cancer by destroying free radicals
      • Strengthens the immune system
      • Assists in the building of strong bones and teeth
    • Deficiency
      • Scurvy - bruising and haemorrhaging under the skin, black gums, slow wound healing and loose teeth.
      • Anaemia due to failure to absorb iron. Symptoms include dizziness, fatigue and paleness.
      • Groups vulnerable to deficiency are the elderly - loss of appetite. People on low incomes - Can't afford fresh food.
    • Excess
      • If very large doses are taken, it could lead to kidney stones.
    • Stability of Vitamin
      • Very soluble in water and therefore leaches out in water
      • Oxidation of Vitamin C
        • Alkaline conditions
        • High temperatures
        • Exposure to light
      • About a 50% loss rate during the canning of fruit and veg
        • Greater loss during the drying of foods
        • Frozen foods retain the most vitamin C

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