BS ISO 8588:2017规定了确定是否存在可感知感官差异的程序 在两种产品的样品之间。该方法适用于单个感官是否存在差异 属性或在几个方面。“A”-“非A”测试可通过以下方式用于感官分析:A）作为差异测试，尤其是用于评估具有变化的样品，例如: 外观（难以获得完全相同的重复样品）或回味（制作） 直接比较困难）；b） 作为一种认可测试，尤其是用于确定一名评估员或一组评估员 识别与已知刺激相关的新刺激（例如，对刺激质量的识别） 新甜味剂的甜味）；c） 作为一种感知测试，确定评估者辨别刺激的能力。“A”-“非A”测试不适用于评估两种产品是否足够相似以供使用 可互换（即用于相似性测试），因为“A”-“非A”测试本质上涉及复制 所有评估人员对相同产品的评估。这些重复评估违反了基本原则 假设相似性测试在统计上有效。附录B中给出了其应用示例。交叉引用:ISO 8586:2012ISO 5492:2008 ISO 8589:2007 Ed 2ISO 3534-1:2006购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 8588:2017 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.Cross References:ISO 8586:2012ISO 5492:2008ISO 8589:2007 Ed 2ISO 3534-1:2006All current amendments available at time of purchase are included with the purchase of this document.