Fat

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What causes humans to be fat? If you said, fat, you have the wrong answer. Sugar can turn into fat Eating fat doesn’t make you fat: Watch Video to Understand why

Sugar Leads to Obesity because of Blood Sugar Obesity https://www.brainpop.com/health/diseasesinjuriesandconditions/obesity/

Trans fat=Unsaturated fat = Hydrogenated Oil

Trans fat is so bad, FDA (Food and Drug Administration) wants to Ban it in the USA

Assignment:

Read Nutrition Labels Find Foods with Trans fat in them.  Read the ingredients even if the label says zero trans fat.  Look for hydrogenated oils.  If you do not have any foods with trans fat in your house, your parents are doing a great job.  Search online or go to your local grocery store to complete this assignment. List 5 Foods:
  1. Name of Food
  2. Amount of Trans fat per serving
  3. Ingredient that is trans fat
What is the nutritional value of Trans Fat? What Does Trans Fat Do to Your Body? Why Does the FDA want to Ban Trans Fat in Foods? Why Do some Food Companies put Hydrogenated oils in foods? What does it do for food?  

Bite Size Read and Take the Bit Size Online Quiz   http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/plantoilsanduses/vegoilsrev1.shtml Assignment: Draw the Molecule of a Vegetable Oil (visit above website to see a vegetable molecule) Assignment: Watch Video & Take the Quiz http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/plantoilsanduses/vegoilsact.shtml Assignment: Test http://www.bbc.co.uk/bitesize/quiz/q35325312 Learn about Emulsion What is Hydrogenated Oil?

Study the Terms & Facts for Test

TERMS

Hydrogenation A chemical process in which hydrogen is added to the double bonds of unsaturated fats, usually vegetable oils, to create a solid fat. Partially Hydrogenated A partial chemical process in which hydrogen is added to the double bonds of unsaturated fats, usually vegetable oils, to create a solid fat. Polyunsaturated Fat: fat lipids in which the constituent hydrocarbon chain possesses two or more carbon–carbon double bonds. Found in nuts, seeds, fish, algae, leafy greens, and krill. Emulsion is a mixture of two liquids that wouldn’t ordinarily mix, as vinegar and water Emulsifier consists of a water-loving hydrophilic head and an oil-loving hydrophobic tail Immiscible incapable of mixing or attaining homogeneity Stabilize make or become unlikely to change, fail, or decline. Lecithin refers to a mixture of phospholipids and oil  

SUMMARY of FACTS

  1. Vegetable oils are natural oils found in seeds, nuts and some fruit.
  2. Molecules of vegetable oils consist of glycerol and fatty acids.
  3. Vegetable oils have higher boiling points than water. This means that foods can be cooked or fried at higher temperatures than they can be cooked or boiled in water.
  4. Examples of Emulsion:               Margarine, Ice Cream, Lotion,
  5.  Examples of Emulsifiers:            Lecithin, Mustard & Egg
  6.  Polyunsaturated Fats are Liquid at room Temperature
  7.  Hydrogenation causes fat (oil) to harden
  8. Hydrogenated fats have a higher melting point, as a result, they are usually solid at room temperature
  9. 60°C and a nickel catalyst is needed for hydrogenation
  10.  Margarine is an emulsion partial hydrogenated vegetable oil and salty water
  11. Unsaturated fat tend to be liquid at room temperature
  12. Saturated fat tends to be solid at room temperature
  13. Saturated fats and trans fats tend to raise “bad” (LDL) cholesterol levels in the blood.