Question

Why does raw bread taste sweet after chewing in the mouth?

Answer 1

because the salivary amylase present in our saliva converts carbohydrates present in the bread into simple sugar(maltose)which tastes sweet.

Answer 2

Raw bread will taste sweet because in  our mouth has saliva secreted by salivary gland that have enzyme called salivary amylase that converts starch into Maltose(sugar).