Fats and Oils

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  • Created by: Charlotte
  • Created on: 26-04-13 19:59
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  • Fats and Oils
    • What are fats and oils?
      • 'Lipids' is a general term for both fats and oils
      • Both have similar chemical structures and functions
      • Fats are high in calories
      • Fat in the diet is important for health and wellbeing
      • Excess fat in the diet us stored as body fat
      • Our fat intake should be no more that 35% of our total energy intake
    • Functions of fat in the diet
      • Fat is a source of energy
      • Forms part of the structure of cells
      • Stored under the skin, fat helps insulate the body against cold
      • Fat in the diet helps to promote a feeling SATIETY (feeling full after eating)
    • Sources
      • Fat come from both plant and animal sources
      • Plants - advocado, peanuts, sesame seeds
      • Animals - Meat, lard milk, tuna, butter
    • Visible and invisible fats
      • Some fats are visible such as: fat on the meat or solid fats such as butter
      • Other fats form part of the food product and cannot be seen such as in ready meals, chocolate, burgers
    • Chemistry of Fats
      • Saturated fats
        • Are solid at room temperature.
        • Mainly  found in animal foods
        • Too much saturated fat in the diet has been linked to high blood cholesterol
          • Leading to an increased risk of coronary heart disease, diabetes and obesity
      • Monounsaturated fats
        • Found in both animal and vegetable fats.
        • Monounsaturated fatty acids are considered healthier because they help to lower blood cholesterol
      • Polyunsaturated fats
        • very soft or oily at room temperature
        • Not go solid even in the refrigerator  They are preferred in the diet
      • Essential fatty acids
        • cannot be made by the body
        • Essential for regulating body processes, including blood clotting and control of inflammation.
          • Two important ones are : Omega 3
            • found in oily fish, seeds, walnut oil, green leafy vegetables. - helps to protect the heart
            • Omega 6:  found in vegetables, fruits grains, chicken, seeds - helps lower cholesterol in the blood

Comments

jill richardson

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Quite a complex mindmap - try turning it into notes or using it to check that your knowledge is complete.

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