The digestive system

Bread

Bread

Slide

Instructions:

Take a piece of white bread and chew it for three minutes without swallowing it.

Has the taste of the bread changed?

 

Explanation:

The longer we chew the bread, the sweeter the taste becomes. Why? Because saliva contains enzymes that start the digestive process by breaking down the starch in the bread. When starch is broken down, this releases the sugars in it. We can then discern a sweet taste.