Saliva starts the digestive process in the mouth. Saliva is a food material that mixes with food in the mouth during chewing by teeth. It acts as a digestive juice and softens the food, allowing for an easier digestion process. Salivary glands produce this substance.
Saliva is mixed with food before swallowing due to the following reasons:
- Saliva prevents us from chocking. It converts food into bolus which can be swallowed easily.
- Saliva contains digestive enzymes like amylase which partially digest the food in the mouth itself.
- Saliva is essential for taste. Individual salts or sugar molecules are released on when food is mixed with saliva
- Saliva can also kill some bacteria.