... about, helping to comminute it, but it can not take the place of the teeth. All foods should be thoroughly masticated. While the mastication is going on the saliva becomes mixed with the food. In the saliva is the ptyalin, which begins to digest the starch. Starch that is well masticated is not so liable to ferment as that which gets scant attention in the mouth. Starches and nuts need the most thorough mastication. If thorough mastication were the ... — Maintaining Health • R. L. Alsaker