Characterizing Dynamic Sensory Properties of Nutritive and Nonnutritive Sweeteners with Temporal Check-All-That-Apply

Area of Science:

• Sensory Science
• Food Science
• Consumer Research

Background:

• Temporal Check-All-That-Apply (TCATA) is a dynamic sensory method for tracking taste perceptions.
• Understanding the temporal sensory profiles of sweeteners is crucial for product development.

Purpose of the Study:

• To characterize the temporal sensory profiles of various sweeteners using TCATA.
• To investigate the influence of side tastes on perceived sweetness intensity and temporal perception.

Main Methods:

• Two experiments utilized TCATA with approximately 125 participants per experiment.
• Participants evaluated sweeteners in water at controlled concentrations.
• Six attributes (sweet, bitter, metallic, licorice, cooling, drying) were tracked for 60 seconds post-swallowing.

Main Results:

• Sweet and bitter sensations were perceived earliest (~10s), followed by metallic and cooling (~10-25s).
• Drying sensations occurred significantly later (30-50s), varying by sweetener.
• Higher perceived sweetness correlated with fewer reported side tastes; unfamiliar tastes may cause attribute smearing.

Conclusions:

• TCATA effectively differentiates temporal sensory profiles of sweeteners.
• The presence and perception of side tastes significantly modulate the temporal experience of sweetness.
• Methodological biases like attribute smearing should be considered in temporal sensory analysis.