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Sensory Evaluation Tests. 1. Discriminatory Testing. Used to recognize or identify taste Used to training or select panelists for tasting. 2. Difference Testing. Identifies characteristics Determines if there is a difference between samples.
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1. Discriminatory Testing Used to recognize or identify taste Used to training or select panelists for tasting
2. Difference Testing Identifies characteristics Determines if there is a difference between samples
A. Triangle Test-3 coded samples- two samples are alike and one different-useful for quality control
B. Duo-Trio Test -3 samples -one is labed R (reference) & the other two are coded -coded sample is identical to R and the other is different -asked to identify odd sample
C. Ranking Test-decide on attribute to be ranked such as crunchiness-often used for screening the best samples in a group
C. Paired Comparison-pair of coded samples for comparison of a specific characteristic such as sourness-indicates any detectable differences-can be used for preference testing and quality control
3. Descriptive Tests – “Scoring” Methods-determines intensity of some characteristic(s)-Scale is either structured or unstructured
4. Affective Tests-degree of preference or acceptability of a product-most often used with consumer panels-evaluates acceptance and quality of new food products
A. Paired Preference-indicate which of two samples is preferred-used when desirability of one sample is known
C. Ranking for Preference-Rank two or more samples using a scale-ranking is between like and dislike
B. Hedonic Scale-measures degree of liking-usually a nine point scale