Sensory Evaluation
of Food
NUFS 4410
Dr,Jean Weese
What is Sensory Evaluation,
Sensory is the use of all the
senses to evaluate a food sample,
Elizabeth Larmond Stated:
No instrument could evoke
the same response as that of
the human senses.
Five Senses:
Taste
Four Tastes
Sweet
Salty
Bitter
Sour
Five Senses:
Taste
Sight
Five Senses:
Taste
Sight
Smell
Five Senses:
Taste
Sight
Smell
Touch
Sound
Five Senses:
Look See
Listen Hear
Touch Feel
Sense Taste
Smell
Major areas of consideration
in Sensory Evaluation,
A) Samples
Preparation of Samples
1,Temperature of Samples
2,Serving Utensils
3,Sample Size
Preparation of Samples
Sample Size
Preparation of Samples
1,Temperature of Samples
2,Serving Utensils
3,Sample Size
4,Sample Coding
Preparation of Samples
Sample
Coding
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Preparation of Samples
5,Order of Presentation
Preparation of Samples
C
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Order of Presentation
Preparation of Samples
C
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Order of Presentation
Preparation of Samples
5,Order of Presentation
6,Number of Samples
7,Time of Testing
8,Rinsing
Major areas of consideration
in Sensory Evaluation,
A) Sample
B) Panelists
Selection of Panelists:
Who to select
Age
Gender
Ethnicity
Illness
Ability to sense food
Smokers
Available
Willingness to serve
Selection of Panelists,
How to make the selection
1,Tests
2,Thresholds
3,Discrimination
4,Ability to taste the four basic tastes
Major areas of consideration
in Sensory Evaluation,
A) Sample
B) Panelists
C) Environment
Environment of Testing
1,Temperature
2,Lights
3,Comfort
4,Private
Major areas of consideration
in Sensory Evaluation,
A) Sample
B) Panelists
C) Environment
D) Presentation
Presentation:
Random
Numbering or labeling
Preparation of Samples
C
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Order of Presentation
Presentation:
Utensils, Stainless Steel
Plates, White or Paper
Glasses,Clear
Carrier,Pie Crust
Accompaniment,Ketchup
Sensory Tests
Three Major Types of Tests,
Discrimination Tests
Descriptive Tests
Affective Tests
Sensory Tests,
Discrimination Tests:
Paired Comparison
Triangle tests
Duo-trio
Ranking Tests
Paired Comparisons:
Water
Triangle Test,
Water
Duo Trio:
Water
Ranking Tests
Rank the following samples in the
order of sweetest to least sweet,
You may taste as often as you like.
Sensory Tests,
Discrimination Tests:
Descriptive Tests:
Rating or Scoring
Texture and Flavor Profile Analysis
Quantitative Descriptive Analysis
Sensory Attribute Terms:
Thick Thin
Tough Tender
Dry Wet
Dry Moist
Dry Juicy
Fine Course
Smooth Gritty
Dull Shiny
Airy Compact
Soft Hard
Scoring,
Water
Other Descriptive Tests:
Texture Profile Analysis
Flavor Profile Analysis
Other Descriptive Tests:
Texture Profile Analysis
Flavor Profile Analysis
Quantitative Descriptive Analysis
Affective Tests,
Hedonic test
Likes and dislikes
Preference
FACT
Intent to purpose
Sensory Tests
Three Major Types of Tests,
Discrimination Tests
Descriptive Tests
Affective Tests