DMK 40173 Topic 2 statistical Method in Sensory Evaluation

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What is sensory evaluation?

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A scientific discipline used to evoke, measure, analyze, and interpret reactions to characteristics of food and materials as perceived by the senses of sight, smell, taste, touch, and hearing.

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What are the types of sensory tests?

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1. Discrimination / Difference Test 2. Descriptive Tests 3. Affective Tests

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What is the purpose of Discrimination / Difference Tests?

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To discriminate or identify differences between or among samples.

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What is the scope of Discriminative / Difference Tests?

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To assess whether a sensory difference exists between samples.

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What are some practical questions answered by Discriminative / Difference Tests?

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1. Is this product the same as that? 2. Is this one different? 3. How great is the difference?

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What is the function of Descriptive Tests?

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To characterize and compare samples with respect to specific characteristics.

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What is the scope of Affective Tests?

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To determine which sample is most acceptable or preferred.

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What are the types of Discriminative Tests?

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1. Paired Comparison Test 2. Duo-Trio Test 3. Triangle Test 4. Multiple Comparison Test 5. Ranking Test

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What is a Paired Comparison Test?

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A test where two samples are presented, and the judge is asked whether there is a difference in respect to a particular characteristic.

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What are the advantages of the Paired Comparison Test?

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1. Minimum number of samples required. 2. Straightforward approach.