ISO 8588:2017
感官分析.方法学.“A”-“非A”试验
Sensory analysis - Methodology - "A" - "not A" test
ISO 8588:2017 发布历史
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, in appearance (making it difficult to obtain strictly identical repeat samples) or in aftertaste (making direct comparison difficult); b) as a recognition test, particularly for determining whether an assessor or group of assessors identifies a new stimulus in relation to a known stimulus (for example, recognition of the quality of the 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. Examples of its application are given in Annex B. NOTE Bi and Ennis[1] point out that the estimate of the discriminal distance, d’, between the “A” and “not A” samples is the same regardless of the nature of the replicated evaluations performed in the test but that the estimate of the variance of d’ does depend on how the replicate evaluations were performed. As such, no general discussion of a Thurstonian analysis of the “A” – “not A” method, nor of the power of the test is undertaken in this document. Interested readers are referred to Reference [1] for a detailed discussion of the topic.
ISO 8588:2017由国际标准化组织 IX-ISO 发布于 2017-07-01。
ISO 8588:2017 在中国标准分类中归属于: X04 基础标准与通用方法，在国际标准分类中归属于: 67.240 感官分析。
ISO 8588:2017 发布之时，引用了标准
- ISO 3534-1:2006 统计学.词汇和符号.第1部分:概率和基本统计术语
- ISO 5492:2008 感官分析.词汇
- ISO 8586:2012 感官分析.选定的评估员和专业感官评估人员的选择、培训和监视的通用指南
- ISO 8589:2007 感官分析.试验室设计的一般指南
ISO 8588:2017的历代版本如下：
- 2017年 ISO 8588:2017 感官分析.方法学.“A”-“非A”试验
- 1987年 ISO 8588:1987 感官分析 方法学 “A”-“非A”试验
- 标准号
- ISO 8588:2017
- 发布
- 2017年
- 发布单位
- 国际标准化组织
- 当前最新
- ISO 8588:2017
- 引用标准
- ISO 3534-1:2006 ISO 5492:2008 ISO 8586:2012 ISO 8589:2007