Tastes are sensations caused by the
stimulation received by the taste buds in our mouth. There
are two types of sweetness taste buds in our mouth on the tongue. The taste buds respond to or interact with
the chemical compounds in the food tasted, and send signals to the brain
through the nerve fibers. Taste buds are
usually a cluster of a hundred or less cells.
chemical called neuropeptide Y when stimulated by the food eaten, informs the
brain that sweet substance is present in the food. On the other hand the chemical causing
bitterness is detected by a taste bud with chemical Chloecystokinin.
Sweetness is tasted when the food contains
a lot of carbohydrates, sugar (sucrose).
Sometimes the psychological condition like happiness also causes
sweetness to be perceived/sensed.