Texture evaluation
12 important questions on Texture evaluation
What are the functions of texture?
- Contrast or variety in a meal
- Indicator for food quality
- Identification of foods
- Satiety expectations (hoe dikker de structuur hoe vullender)
- Eating rate, intake (hoe vloeibaarder hoe meer je eet)
What is happening when using visual texture
- It is the first evaluation of texture
- Creating expectations
- Can influence oral texture perception
When are you using auditory texture, what are you detecting
- Crispiness, crunchiness and crackliness
- sound influences hedonic responses
- Negative: gritty sound of sandy spinach
- Positive: crips sounds of breakfast cereals
- Other: ripeness of watermelon by thumping
Increasing loudness and pitch causes higher crispy perception
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What is the difference in auditory texture between crispiness and crunchiness?
- Higher pitch
- Dry food
- More delict/light
- Short breakage duration
Crunchiness (appel)
- Lower pitch
- Moist/wet foods
- More solid thick
- Longer breakage duration
Tactile texture where are we looking at
- Oral texture perception (food)
- Mouthfeel characteristics
- static feelings
- rheological properties
- Dynamic phase changes
- ingestion (lips)
- biting (front teeth)
- chewing
- wetting and breakdown (saliva, enzymes)
- Deformation (tongue, palate)
- Bolus formation
- Manual texture perception
Oral texture perceptions is depending on
- Product specific
- high inter-individual variation in behaviour (age)
How do you measure texture perception?
- discrimination testing,
- ranking,
- (temporal) descriptive profilling,
- QDA
- TEXTURE PROFILE METHOD
The texture profile method
Uses a standardised vocabulary, with clear definitions.
What is the aim of sensory-instrumental texture correlations?
What are the two instrumental texture methods?
- Insteon Unicersal Testing Machine:
- Uniaxial compression tests
- Texture profile analyser (TPA)
What does the uniaxial compression test do?
De machine boots de beweging in de mond na.
Textural characteristics die onderzocht kunnen worden zijn
- Elesticity/stiffness
- strength of matrix
- brittleness
- firmness or hardness
- toughness
What does the texture profile analyser do?
The question on the page originate from the summary of the following study material:
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