Lecture 8 Sensory
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What food quality?
The degree of excellence of a food includes all the characteristics of a food that are significant and that make the food acceptable.
What is the only method to know consumer preference and acceptability?
Sensory Analysis
_________ could evoke the same response as that of the human senses
No instrument
What uses senses to evaluate a food?
Sensory analysis
What is the sensory evaluation process?
Stimulus –> sense organ–> sensation –> brain–> perception –> response
What receptor can distinguish MSG?
Umami
What is papille?
Raised protrusions on the tongue surface which contains taste buds.
What is the structure located in the forebrain of vertebrates that receives neural input about odors detected by cells in the nasal cavity?
Olfactory bulb
What are the factors affecting taste and odor?
Gender, age, physiological condition, degree of hunger, genetics, training, and environment.
What are the controlled conditions?
The noise, temperature, humidity and lighting
Tested products are ______ and ______.
Random and coded
What is the difference test?
Triangle and duo-trio
What are examples of the paired comparison test?
Same-different, directional paired comparison, multiple paired comparison.
What is an example of an acceptance/preference test?
Ranking and likability
What test do you use to determine if there is a perceivable difference between products?
Discrimination/ difference test
What test is used to determine two products that differ in a specified attribute?
Paired comparison
What is used to determine whether a specific consumer group likes or prefers a particular product?
Affective, acceptance or preference test
What test requires a large number of panelists to represent the public?
Affective, acceptance, or preference test