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Nutrition In Your Food

Activity 1:
Getting the Starch Out of Your Food

CAUTION: DO NOT DRINK IODINE OR FOOD WITH IODINE ON IT!

Sweeeeet!!!:

In this experiment, you'll find the amount of starch in some different kinds of food. Starch is a natural form of sugar, which provides your body with energy.

You Will Need:

  • Different kinds of fresh apples.  Other food samples like potatoes.
  • Paintbrush
  • Iodine
  • Knife

What to Do:

  1. Have an adult cut the apple in half.
  1. Use a paintbrush to brush the iodine on the apple.
  1. Iodine reacts with starch.  If the apple has starch, the iodine becomes a dark purple color.  What color do you see when you brush the iodine on the apple?
  1. Try this with other apples and foods.  Some foods may have more or less starch than others.

Experiment Demonstration

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