Taste sensitivity in healthy adults: gustatory test validation and observational study

Area of Science:

• Sensory Science
• Neuroscience
• Physiology

Background:

• Gustatory sensitivity is crucial for biological functions.
• Taste disorders present diagnostic and therapeutic challenges.
• A validated gustatory test is needed to establish a reference baseline.

Purpose of the Study:

• To validate and administer a gustatory test for assessing taste sensitivity in healthy adults.
• To establish a reference baseline for primary flavor perception.
• To investigate flavor identification thresholds and stimulus intensity perception.

Main Methods:

• A standardized gustatory test using 16 sapid solutions (4 primary flavors at 4 concentrations).
• Assessment of flavor identification threshold and stimulus intensity perception.
• Inclusion of 71 healthy adult participants.

Main Results:

• Sweet, bitter, and salty flavors identified at the first concentration; sour at the second (p<0.05).
• Sour flavor had the lowest perceived intensity (low concentration); sweet the highest.
• Bitter flavor had the highest intensity (high concentration); sour remained the lowest.

Conclusions:

• The study validated a user-friendly tool for taste function assessment.
• A reference baseline for primary flavor perception in healthy adults was established.
• The test can serve as a reference for future studies on specific patient cohorts.