Saliva is the watery liquid produced in the mouth to aide chewing and digestion of food Saliva consists of mainly water. It also has ions, enzymes and salivary proteins whic … h acts as a protective mechanism for our teeth.Source-see related link below.he saliva contain enzymes to help digest food, it also contain antibodies to fight bacterias, it also contain water to help mix the ffod and swallow it and to the formation o … f bolus. 2 people found this useful.