Evaluation of bottled nutritive drinks using a taste sensor

Area of Science:

• Food Science
• Sensory Analysis
• Consumer Product Evaluation

Background:

• Assessing the palatability of bottled nutritive drinks is crucial for market success.
• Human gustatory sensation tests provide detailed sensory data but can be subjective and resource-intensive.
• Objective methods for evaluating drink palatability are needed to complement human sensory panels.

Purpose of the Study:

• To evaluate the taste profiles of 20 commercially available bottled nutritive drinks in Japan.
• To compare human gustatory sensation test results with data obtained from a multi-channel taste sensor.
• To identify critical factors influencing the overall palatability of these drinks.

Main Methods:

• Human volunteers scored drinks on basic tastes, overall palatability, and nine palatability components.
• A multi-channel taste sensor was used to measure taste intensities.
• Statistical analysis (correlation) was performed to link sensory scores and sensor data.

Main Results:

• Overall palatability positively correlated with 'sourness', 'fruitiness', 'refreshing', and 'good aftertaste'.
• Palatability negatively correlated with 'bitterness', 'medicinal plant taste', 'seeming beneficial', and 'pungency'.
• The taste sensor accurately predicted human-assessed sourness, bitterness, and pungency (r=0.85, 0.71, 0.84).

Conclusions:

• Sourness, fruitiness, refreshing sensation, and good aftertaste are key drivers of palatability in nutritive drinks.
• Taste sensor technology shows potential as a reliable tool for objective palatability evaluation of bottled nutritive drinks.
• Integrating taste sensor data can aid in optimizing drink formulations for consumer preference.