Card 141
Question
Which multivariate statistical method is commonly used to relate descriptive sensory data to instrumental measurements?
Answer
Partial Least Squares (PLS) regression.
Sensory science
Discover Sensory science: 201 flashcards with questions and answers.
- Subject
- Sciences / Chemistry
- Language of creation
- English
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Cards in this set
Card 142
Question
What statistical method evaluates relationships between sensory attributes and instrumental data?
Answer
Partial least squares regression.
Card 143
Question
What type of pressure should a sensory evaluation room have?
Answer
Positive pressure to maintain cleanliness.
Card 144
Question
What are the two types of affective testing in sensory analysis?
Answer
Preference tests (which sample is preferred) and
acceptability tests (how much sample is preferred)
Card 145
Question
What multivariate analysis technique reduces sensory data dimensionality?
Answer
Principal component analysis.
Card 146
Question
What compound is used to distinguish supertasters?
Answer
PROP (propylthiouracil)
Card 147
Question
What is the term for investigation and quantification of how physical stimuli evoke sensations and perceptions?
Answer
Psychophysics
Card 148
Question
What is the name of the chemical compound commonly used as a bitterness standard in taste research?
Answer
PTC (phenylthiocarbamide)
Card 149
Question
What type of consumer test measures purchase intent using a probability scale?
Answer
Purchase intent testing.
Card 150
Question
The results of what sensory test are often plotted to give a flavor profile, with the resulting graph being referred to as a spiderweb plot?
Answer
Quantitative Descriptive Analysis
Card 151
Question
Which alkaloid compound is an anti-malarial agent and is the standard for bitter taste sensation?
Answer
Quinine
Card 152
Question
What two compounds are most commonly used as standards for bitterness in sensory evaluation?
Answer
Quinine and Caffeine.
Card 153
Question
If you have 8 panelists who will try all 4 samples, what type of experimental design would you use and how many degrees of variance would you have?
Answer
Randomized complete block design; degrees of variance 8-4 = 4
Card 154
Question
In what sensory method do subjects receive 3 or more samples that are to be arranged in the order of intensity of specified attribute?
Answer
Ranking
Card 155
Question
What are the 3 primary colors?
Answer
Red, Blue, and Green
Card 156
Question
What type of ANOVA should be used when the means being compared are based on multiple observations from the same group of individuals?
Answer
Repeated measures ANOVA
Card 157
Question
Identify the name of this sensory test: each subject is presented with two samples, and are asked whether the samples are the same or different.
Answer
Same/difference of simple difference tests, may also be paired comparison (lacks predictable null hypothesis)
Card 158
Question
What sensory phenomenon describes reduced perception of a stimulus after repeated exposure?
Answer
Sensory adaptation.
Card 159
Question
How would you determine which brand of pudding is preferred by customers?
Answer
Sensory evaluation, preference tests
Card 160
Question
What is the scientific discipline used to evoke, measure, analyze, and interpret reactions to the characteristics of foods that are perceived by the senses?
Answer
Sensory evaluation.
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