Various methods are available for characterizing the dynamic sensory properties of foods, beverages, and other products. Conventional temporal methods include time-intensity and discrete evaluation of attributes at specified time points. Time-intensity allows the intensity of one, or at most two, attributes to be tracked continuously with time. The conventional approaches can be applied to capture either intensity or hedonic responses.
Should the proposed ingredient substitution proceed? How did the product perform in a meet-or-beat study? These questions can be answered using Equivalence Tests and Non-inferiority Tests, respectively. Equivalence and non-inferiority tests are related. Each test makes use of bounds that are set based on practical considerations, and allows for decision-making within the framework of statistical hypothesis testing. This seminar will
Practical considerations often prevent all consumers from evaluating all products in a consumer liking study. A balanced incomplete block design is often used because its desirable properties facilitate statistical analyses. A consumer study (n=400) on 12 commercially available sliced white breads was planned to identify consumer segments, and the sensory properties that drive their hedonic responses.
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Consumer testing for an export market can identify target consumer segments in the population of interest. Sensory product profiles from descriptive analysis give context to these results, providing actionable outcomes for product developers. This systematic approach also highlights potential in the export market, which can encourage retailers in the export region to feature the optimized products. Sensory descriptive analysis was
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Many sensory experiences have a temporal dimension, and several approaches have been proposed to capture changes in sensations with time. The workshop will review a few of those methods, including Time intensity, Temporal Attribute Discrimination, Progressive Profiling, Sequential Profiling, Temporal Dominance of Sensations, and Temporal Order of Sensations.
“One man’s meat is another man’s poison.” There will always be a wide range of consumer liking response across any product category. Cluster analysis can provide consumer segments based upon common liking that reflect underlying sensory preferences. To determine valid population segments requires a large sample of consumers. As the number of products tested by each consumer increases, experimental bias
Time intensity (TI) methods are used to measure perceived changes in the intensity of one, or sometimes two, sensory attributes over time in a product or stimuli. Evaluations are performed by a panel of well-trained human assessors.