Food and nutrients

Illustrating the presence of complex carbohydrates

Illustrating the presence of complex carbohydrates

Slide

Illustrating the presence of complex carbohydrates

Instructions:

Proving that potatoes contain starch (complex carbohydrate):

  • Cut a slice of potato.
  • Put several drops of iodine water on the potato.

 

 

The result:

Iodine water is midnight blue when starch is present and yellow when there is no starch.