The salty taste that humans sense is determined by the salt concentration of the saliva in contact with the taste buds of the tongue. Most salt contained in food does not arrive at this position and is ingested salt waste. If salt chips containing about 0.1 g of salt are attached to the back of teeth, salt taste is felt on the surface of the tongue touching there. The chip consists of a taste layer in which salt is dispersed in a water-soluble polymer and an adhesive layer, and when a tip is attached to the back of teeth with an adhesive layer, sufficient salty taste can be felt even with unsalted food. The chip dissolves in about 6 minutes. The Keio Group will establish a venture „L Taste“ based on this finding.
Nikkei Digital Health, March 3, 2017