Taste - the Basics
Using taste it is important to be able to detect the basic sensory elements:
There are four basic tastes: sweet, sour, salt, bitter.
There is a close interaction between smell and taste; approximately 60% of taste is directly attributed to odour. When swallowing, air from the mouth is forced up through the nasal cavity and so into contact with the olfactory nerve.
Why Carry Out Sensory Evaluation?
| Only the human brain can integrate all the sensations of appearance, aroma, taste, sound and feel which contribute to the flavor of a food
Advantages of Assessment by Humans
Humans are more sensitive to differences in color, aroma, flavor and texture than machines. After all final product must be acceptable to humans. When assessing a flavor you are not just evaluating an attribute but need to think about how the attribute affects the whole product.
Disadvantages of Measurement by Humans
Assessors may differ in the following:
- Descriptive Abilities
Individual assessors will differ from day to day and will be affected by mood, weather, food, drink, health etc. Changes in the testing environment will affect assessors perceptions e.g. temperature, light, odors. There is not a direct relationship between stimulus and response.