Abbreviation for "Quantitative Descriptive Analysis", a basic methodology for analytical food sensory tests, A descriptive (descriptive) sensory analysis aims to identify and quantify sensory product properties through objective description of human perception and to reveal relationships between the chemical-physical components of a product and the sensory properties of this product by trained individuals.
The intensity of certain properties or characteristics is measured by means of an intensity scale. Such a quantitative descriptive analysis, also referred to as profile analysis or profile checking, also allows the differences between several products to be graphically represented with defined properties. Besides QDA, there are also other differences. That's the one triangle test (of two products, two are identical, the other one must be recognized), the ranking test (differences in a feature such as Sweet ), as well as tests concerning the Perceptual threshold (Perceive / recognize a specific substance).