A toast is defined in the dictionary as a slice of bread browned on both sides by heat. But what causes the bread to brown?
Things Required:
A toaster, an electric
2 slices of bread broiler or an oven
Directions:
Place the pieces of bread in the toaster, in the oven under the broiler. Let one stay in twice as long as the other.
This Is What Happens:
One turns golden brown. The one kept in too long turns black.
Science Behind It:
Too much heat releases the carbon of the starch and sugar. It is this carbon that makes the bread turn black.
Toasting is a chemical process that alters the structure of the surface sugars, starches and the proteins of the bread slice. The sugars become fibre. The amino acids that are the building blocks of the protein break down and lose some of their nutritional value. Toast, therefore, has more fibre and less protein than the bread from which it is made. Some nutritionists believe that when you eat a toast instead of bread you are getting colour and flavour at the expense of nutrition.
