Table 5. Detection thresholds for four prototypical tastants (% w/v), including mean, standard error of mean (SEM), and range.

	Detection Threshold
	Mean ± SEM	Range
Sodium chloride	0.02 ± 0.002	0.02–0.07
Citric acid	0.015 ± 0.0004	0.013–0.025
Caffeine	0.007 ± 0.0002	0.006–0.009
Monosodium glutamate (MSG)	0.012 ± 0.0007	0.008–0.02