Table 3.

Sensors used and their thresholds in α-ASTREE electronic tongue

Basic Taste	Taste Substance	Threshold of Sensors (mol/L)
		ZZ	BA	BB	CA	GA	HA	JB
Sour	Citric acid	10−7	10−6	10−7	10−7	10−7	10−6	10−6
Salty	NaCl	10−6	10−5	10−6	10−6	10−4	10−4	10−5
Sweet	Glucose	10−7	10−4	10−7	10−7	10−4	10−4	10−4
Bitter	Caffeine	10−5	10−4	10−4	10−5	10−4	10−4	10−4
Savoury	MSG	10−5	10−4	10−4	10−4	10−5	10−4	10−4