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DIN ISO 8588:2025-07

Sensory analysis - Methodology - "A"-"not A" test (ISO 8588:2017)

Fecha edición: 2025-07-01
En Vigor
Idiomas disponibles: Inglés, Alemán
Resumen: This document specifies a procedure for determining whether a perceptible sensory difference exists between samples of two products. The method applies whether a difference exists in a single sensory attribute or in several.The "A" – "not A" test can be used in sensory analysis in the following ways: a) as a difference test, particularly for evaluating samples having variations, for example, inappearance (making it difficult to obtain strictly identical repeat samples) or in aftertaste (makingdirect comparison difficult); b) as a recognition test, particularly for determining whether an assessor or group of assessorsidentifies a new stimulus in relation to a known stimulus (for example, recognition of the quality ofthe sweet taste of a new sweetener); c) as a perception test, to determine the ability of an assessor to discriminate stimuli. The "A" – "not A" test is not appropriate for assessing if two products are sufficiently similar to be used interchangeably (i.e. for similarity testing) because the "A" – "not A" test inherently involves replicate evaluations of the same products by all assessors. These replicate evaluations violate the basic assumptions for similarity tests to be statistically valid.

Keywords: Agricultural products|Comparative tests|Determination|Food products|Odours|Sampling|Sensory analysis|Sensory analysis (food)|Taste|Testing
ICS: 67.240 - Análisis sensorial
CTN:

Equivalencia Internacional

Idéntica ISO 8588:2017

Reemplazo Normas

Reemplaza a DIN 10972:2003-08

Reemplaza a DIN ISO 8588:2024-10

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